Tutorials offered at VTC2012-Spring
T1: Advances in Green Communications and Networks
Presented by: Zhisheng Niu, Professor, Tsinghua University, China
The explosive development of ICT industry has emerged as one of the major sources of world energy consumption. As a result, having the information and communication networks more energy-efficient (green) is one of the most critical issues for a sustainable future of the whole world.
In this tutorial, we first claim that the networks planning and operation should be more energy-efficiency oriented and, in the meantime, the radio resources distributed over heterogeneous cellular networks should be optimized in a global way, i.e., Globally Resource-optimized and Energy-Efficient Networks (GREEN). Then, we propose two new frameworks called CHORUS (Collaborative and Harmonious Open radio Ubiquitous Systems) and TANGO (Traffic-Aware Network planning and Green Operation) for GREEN, aiming at increasing the energy efficiency from the system point of view while guaranteeing the coverage and optimizing radio resources as well. Some key technologies for the migration to CHORUS and TANGO are then presented and evaluated. Theoretical modeling and simulation studies show that the CHORUS and TANGO schemes can greatly improve the energy-efficiency of the cellular networks, while the quality-of-services (QoS) can be kept at a satisfactory level. In the end, this tutorial will give a comprehensive survey of the recent developments from algorithms to practical applications in green wireless communications, and summarize some open problems on critical energy-efficient design issues.
The objective of the course is to have the audience understand the background, challenges, research advances, and potential applications of energy-efficient communications and networks. Specifically, the course will
1) review the ICT development during the past 30 years (with major focus on Chinese market) and address the potential challenges when moving forward (especially from the viewpoint of energy-efficiency);
2) reveal the scientific issues and survey the recent advances in the research area of energy-efficient communications and networks;
3) discuss in details several potential paradigm shifts toward the green communications and networks, including TANGO (Traffic-Aware Network Planning and Green Operation) and CHORUS (Collaborative and Harmonious Open Radio Ubiquitous Networks);
4) provide some future directions.
Graduate students, post-docs, and any research engineers in the areas of electronic engineering, information and communication engineering, computer science and engineering, and telecommunication networks. Young faculties in the above-mentioned fields should also be benefited from the course.
Green Communications and Networks is a relatively new research area, which has not been addressed in a systematic way in the past major IEEE Conferences as a tutorial. The two major novelties of this course are: 1) the review of the ICT development during the past 30 years (especially in China) and its grand challenges from the viewpoint of energy-efficiency; 2) the potential paradigm shifts by TANGO and CHORUS which are the original contributions from the instructor.
Zhisheng Niu graduated from Northern Jiaotong University, Beijing, China, in 1985, and got his M.E. and D.E. degrees from Toyohashi University of Technology, Toyohashi, Japan, in 1989 and 1992, respectively. After spending two years at Fujitsu Laboratories Ltd., Kawasaki, Japan, he joined with Tsinghua University, Beijing, China, in 1994, where he is now a professor at the Department of Electronic Engineering. His current research interests include teletraffic theory, mobile Internet, radio resource management of wireless networks, and green communication and networks.
Prof. Niu has been studying on green communications since 2007 and published extensively in this area. He has been serving as the guest co-editor for the IEEE Wireless Communication Magazine Special Issue on Green Radio Communications and Networks (published on Oct. 2011) and the Communication Networks Special Issue on Green Communication Networks (to be published in 2012). He is now the Chief Scientist of the National Fundamental Research Program (so called �973 Project�) of China "Fundamental Research on the Energy and Resource Optimized Hyper-Cellular Mobile Communication System" (2012-2016), which is the first national project in this area in China.
Dr. Niu received the Best Paper Awards from the 13th and 15th Asia-Pacific Conference on Communication (APCC) in 2007 and 2009, respectively, and Outstanding Young Researcher Award from Natural Science Foundation of China in 2009. Currently, he is a fellow and councilor of the IEICE, Director for Conference Publications of IEEE Communication Society, Conference and Technical Seminar Coordinator of IEEE Region 10, council member of Chinese Institute of Electronics (CIE), and vice chair of the Information and Communication Network Committee of the Chinese Institute of Communications (CIC).
T2: Heterogeneous Networks – Technical Aspects and Standardization in LTE and Beyond
Presented by: S. Gaur, J. Acharya, L. Gao, Wireless Systems Research Lab, Hitachi America Ltd.
In this tutorial, we provide researchers and academicians with an overview and insight into the deployment of heterogeneous networks for indoor and outdoor environments within the framework of 3GPP-LTE and LTE-Advanced. We demonstrate the need for heterogeneous networks in order to improve capacity and coverage of cellular systems. We discuss the underlying communication theory of such a network and discuss the interference coordination aspects. We cover the standardization efforts that have gone into incorporating heterogeneous network deployments within 3GPP. We present case studies of real world heterogeneous networks to illustrate the challenges and engineering performance trade-offs. In this tutorial we thus focus on core theory and network design aspects as well as business case for the operators to illustrate why heterogeneous networks are expected to be an integral part of current and future cellular systems.
People from academia and industry who are interested and involved in R&D and standardization of cellular systems.
Heterogeneous networks would be extremely important to improve the coverage and capacity of LTE-Advanced systems. Thus it is a topic of great relevance to the VTS community.
The research and development in heterogeneous networks is a currently evolving process with the 3GPP standardization meetings (RAN 1) deciding the direction and scope. The authors are regular attendees of these meetings and would combine their experience to explain the latest developments in heterogeneous networks in this tutorial.
T3: Inter-Vehicular Communication: Standards, Protocol Design, and Integrated Security Metrics
Presented by: Falko Dressler,University of Innsbruck, Austria and Claudio Casetti, Politecnico di Torino, Italy
Much progress can be observed in the domain of Inter-Vehicular Communication, looking back at the last decade. In this growing community, many ongoing activities focus on the design on communication protocols to support safety application, intelligent navigation, multi-player gaming and other. Very large projects have been initiated to validate the theoretic work in field tests and protocols are being standardized. With the increasing interest from industry, security and privacy become key aspects in the stage of protocol design in order to support a smooth and carefully planned roll-out. Researchers from academia and industry recently met at an international Dagstuhl seminar to discuss open research challenges as well as open issues related to market-oriented design. The objectives of this tutorial are twofold: In the first part, an introduction to recent developments in the field of IVC protocols and the used methods is provides. The tutorial aims to provide insights into relevant methods and protocols in the IVC domain and on how adequate performance studies have to be conducted. In the second part, we will primarily focus on security and privacy issues that impact not only the protocol design but also the chances to successfully roll-out developed solutions.
- Introduction of a very rapidly growing research field
- Basic knowledge on used (and standardized) protocols and mechanisms
- Detailed study of beaconing techniques used for information dissemination both for safety and efficiency applications
- Analysis of security and privacy concerns
- Discussion of security metrics and privacy improvements
- Introduction to Inter-Vehicular Communication
- IVC solutions
- VANET vs. 3G/4G
- Methods and Protocols
- VANET protocols, DSRC/WAVE, IEEE 802.11p
- Beaconing solutions
- Security and Privacy Measures
- Closed system design
- Privacy concerns and countermeasures
- Conclusions and Future Research
The tutorial is targeting researchers in the field of inter-vehicular communication both from academia and industry. The goal is to introduce the current state-of-the-art of inter-vehicular communication protocols. Main emphasis will be on protocol design with integrated security and privacy measures. Attendees who are new to the field will thus be presented a survey on approaches to IVC and their main benefits and weaknesses. People who are already actively working in the field will benefit from intensive discussions on IVC protocols, their limitations, and future challenges.
The topic of inter-vehicular communications is not new, but it changed drastically in the last year with the commitment of the car manufacturers worldwide to add IEEE 802.11p devices in their cars. Using this DSRC/WAVE platform, novel communication protocols are being investigated fostering a very active research community.
Falko Dressler is a Full Professor of Computer Science heading the Computer and Communication Systems Group at the Institute of Computer Science, University of Innsbruck. Dr. Dressler received his M.Sc. and Ph.D. degree from the Dept. of Computer Science, University of Erlangen in 1998 and 2003, respectively. Dr. Dressler is an Editor for journals such as Elsevier Ad Hoc Networks, ACM/Springer Wireless Net-works (WINET), and Elsevier Nano Communication Networks. He was guest editor of special issues on self-organization, autonomic networking, and bio-inspired computing and communication for IEEE Journal on Selected Areas in Communications (JSAC), Elsevier Ad Hoc Networks, and others. Among other, Dr. Dressler wrote the textbooks Self-Organization in Sensor and Actor Networks, published by Wiley in 2007. Dr. Dressler is an IEEE Distinguished Lecturer in the fields of inter-vehicular communication, self-organization, and bio-inspired networking. Dr. Dressler is a Senior Member of the IEEE (COMSOC, CS, VTS) as well as a Senior Member of ACM (SIGMOBILE).
Claudio Casetti got his M.Sc. degree in Electrical Engineering from Politecnico di Torino, Italy. He got his PhD in Telecommunication Engineering from the same institution and he is currently an Assistant Professor at Dipartimento di Elettronica, Politecnico di Torino. He has published more than 130 papers in peer-refereed international journals and conferences on the following topics: Transport and network protocols in wired networks, IEEE 802.11 WLANs, Vehicular networks, Ad hoc and sensor networks. He holds one patent from the U.S. Patent Office and two from the E.U. Patent Office. He serves in the Technical Program Committees of the main international conferences in the networking field (such as IEEE INFOCOM, IEEE GLOBECOM or IEEE ICC). He was co-chair of the Autonomic Networks Symposium at IEEE Globecom 2005. He was the Workshop Co-Chair of IEEE INFOCOM 2009, the Technical Program Co-Chair of IEEE WONS 2009 and the General Co-Chair of IEEE WONS 2010. He is a member of IEEE. He has been a visiting scholar at Umass Amherst, UCLA and UCSD.
T4: TV White Space Standardization Activities: From the Regulation, Technology & Application Perspective
Presented by: Chin-Sean Sum and Hiroshi Harada, NICT, Japan
This tutorial covers the panoramic landscape of the international standardization activities related to wireless communication systems operating in the currently popular TV white space. The latest development of these standardization activities from the perspective of regulations, technical specifications and application scenarios are presented. Section 1 presents the big picture on wireless communications operating in the TV white space, featuring the current trends of market demands, regulatory restrictions, technical challenges and standardization activities. Section 2 discusses the typical usage models with in-depth comparative analysis between the TV white space communication systems and other existing radio technologies. Section 3 gives a concise summary on regulatory-domain-dependent rules which may otherwise be time-consuming for self-study. The selected regulatory domains cover most of the countries that are leading in the field of TV white space communications, including USA, UK, Europe, Japan and Singapore. Section 4 presents the well-known family members of the IEEE Computer Society LMSC 802 standards that are related to TV white space communications. Among others are the WLAN, WPAN, WMAN, WRAN and coexistence with white space emphasis. Section 5 lists the standardization activities in DYSPAN Standards Committee of the IEEE Communication Society. The 1900.4a and 1900.7 are among the groups working with TV white space communications. Sections 6 and 7 present other related standard bodies such as ECMA and IETF in white space communications. Section 8 highlights the opportunities of contribution in the standardization groups to give a head start to audience interested in participating in the mentioned standards.
The key objective of this tutorial is to present the comprehensive basics and updated development of standardization activities related to TV white space communication systems to its audience, many which may not have the time and opportunity to follow the lengthy standardization process.
Other objectives include:
(1) To discuss the potential use case applications that can be supported by a TV white space communication system
(2) To present the highlights of the rules and regulations in various countries
(3) To present the past, present and future of international standards activities from the perspectives of project management and technology
(4) To provide to interested participants, a short path to contributing in the standardization activities
(5) To discuss the future of the TV white space communications
- 1 The Big Picture
- 2 Potential Usage Models
- 3 TV White Space related Rules and Regulations
- 3.1 Global ITU
- 3.2 USA FCC
- 3.3 UK OFCOM
- 3.4 Europe CEPT
- 3.5 Japan MIC
- 3.6 Singapore IDA
- 4 IEEE 802 LAN / MAN Standards Committee
- 4.1 IEEE 802.11af
- 4.2 IEEE 802.15.4m
- 4.3 IEEE 802.16h
- 4.4 IEEE 802.19.1
- 4.5 IEEE 802.22
- 5 IEEE DySPAN Standards Committee
- 5.1 IEEE 1900.4a
- 5.2 IEEE 1900.7
- 6 ECMA TC48
- 7 IETF Protocol to Access White Space database
- 8 Opportunities in Standardization Activities
- 9 The Path Ahead
- 10 Conclusion
This targeted audience of this tutorial would include:
- Members from the industrial community interested in obtaining the overall landscape of the current trend in TV white space communications particularly in the standardization domain
-Managers and engineers involved in wireless/wired communication standards
- Regulators interested in understanding the current trend of TV white space communication standards
- Members of the business community keen in investing to TV white space communication systems
- Graduate students or faculty members involved in research in TV white space communication systems
The speakers are playing important roles as project leaders and active technical contributors in the various mentioned standardization activities. The information presented in this tutorial is the strategic highlights outlining the global development of TV white space communications and standardizations, carefully selected by the speakers based on their long participation in the process. These information are otherwise extremely time and resources-consuming to be explored from scratch. The speakers also share with the audience personal experiences along the process of their participation.
Dr. Chin-Sean Sum received his Ph.D. degree from Niigata University in 2007. He was then affiliated with the National Institute of Information and Communications Technology (NICT), Japan as an expert researcher in the Smart Wireless Laboratory (SWL). He has been involved in multiple standardization activities as a project officer and an active technical contributor. In the IEEE 802.15.3c millimeter-wave wireless personal area networks (WPAN) standard, he served as the assistant technical editor and secretary of the task group. He is contributes to other task groups such as IEEE 802.15.4g Smart Utility Networks (SUN) WPAN as an assistant editor and IEEE 802.11af white space wireless local area networks (WLAN). Currently, he is actively involved in a new initiative group working on WPAN operating in TW white space, known as IEEE 802.15.4m, as the technical editor.
Dr. Hiroshi Harada is the director of smart wireless laboratory (SWL) at National Institute of Information and Communications Technology (NICT). He joined the Communications Research Laboratory, Ministry of Posts and Communications, in 1995 (currently NICT). Since 1995, he has conducted research on Software Defined Radio (SDR), Cognitive Radio, Dynamic Spectrum Access Network, Smart Utility Network (SUN) and broadband wireless access systems in the VHF, TV white space, micro-wave and millimeter-wave bands. He has joined many standardization committees and forums in the United States as well as in Japan and has fulfilled important roles for them. He is currently serving in the board of directors of Wireless Innovation Forum (formerly SDR Forum). He is the chair of IEEE DySPAN Standards Committee (formerly, IEEE SCC41 and IEEE 1900) since 2009, the vice chair of IEEE P1900.4, IEEE P802.15.4g, and TIA TR-51 since 2008, 2009, and 2011, respectively. He was the chair of the IEICE Technical Committee on Software Radio (TCSR) in 2005-2007 and the chair of Public Broadband Mobile Communication Development Committee, ARIB since 2010.
T5: Towards 4G: Technical Overview of LTE and LTE-Advanced by Hyung G. Myung, Qualcomm has been cancelled
T6: Turbo Equalization: Fundamentals, Information Theoretic Considerations, and Extensions
Presented by: Tad Matsumoto, JAIST, Khuorul Anwar, JAIST, and Norulhusna Ahmad, UTM
This tutorial is started with a brief explanation of the basics of turbo equalization for broadband single carrier signaling, where sliding window technique is first introduced. Then, the sliding window formulation of the turbo equalization is converted into block-wise processing, with the aim of finally deriving a frequency domain equivalent of the algorithm.
For the Information Theoretic Considerations of turbo equalization, this tutorial introduces extrinsic information transfer (EXIT) chart as a useful tool for analyzing the convergence property of the turbo equalization.
This tutorial then extends the turbo equalization to time-concatenated chained turbo equalization (CHATUE), which connects turbo equalizers neighboring in time in the absence of cyclic prefix (CP) or guard interval (GI). The latest version of the frequency domain turbo equalization is utilized not only to mitigate the inter-symbol-interference (ISI) but also to eliminate the inter-block-interference (IBI) due to connecting the neighboring blocks.
Another application introduced in this tutorial is a new signaling technique, non-Orthogonal Frequency Division Multiplexing (n-OFDM), where turbo equalization is used to eliminate the inter-carrier interference (ICI) caused by intentionally overlapping the sub-carriers. This concept is analogous to the time-concatenated equalization technique described above. The main objectives of this technique are to achieve high spectrum efficiency and to improve the BER performance with n-OFDM, compared with the conventional OFDM system.
The primary goal of this tutorial is to provide the course taking with the in-depth knowledge of turbo equalization, its design techniques, and practical applications and its extensions. Each section however has its own objectives , which are all in common to help course taken build a technological basis presented in each section:
- Frequency Domain Turbo Equalization
First of all, this section shows that the key to achieving good performance of turbo equalization is to use random enough and long enough interleaver. Some of the mistakes found in recent publications are introduced and it is warned that such incorrect designs do not satisfy the principle of turbo coding. The main objective of this section is to provide lay knowledge for deriving the frequency domain processing to the course takers, with which the computational complexity of the turbo equalization is independent of the number of the multipath components in the channel.
- Information Theoretic Consideration of Turbo Equalization
The objective of this section is to provide the course taking with the information theoretic background of the turbo equalization techniques. The instructors have been motivated by reading some of the recent publications that use very strong code such as turbo and/or LDPC codes, but no significant iteration gain can be obtained. The reason for this is provided with warning statements from the viewpoint of the extrinsic information transfer (EXIT) curve matching. The doped accumulator lifts up the right most point of the EXIT curve of the equalizer to the (1.0, 1.0) mutual information point, by which we can avoid the intersection between the two curves, resulting in elimination of the error floor in bit error rate (BER) performance. It is also shown that even though very simple short memory convolutional code is used, still clear turbo cliff happens at a threshold SNR relatively close to the Shannon limit.
- Time Concatenated Turbo Equalization Systems
Time-concatenated/chained turbo equalization (CHATUE) is introduce which connects turbo equalizers neighboring in time in the absence of Cyclic Prefix (CP) or Guard Interval (GI), The latest version of the reduced complexity equalization technique, Frequency Domain Soft Cancellation Minimum Mean Square Error (FD/SC-MMSE) turbo equalization, is utilized not only to mitigate the inter-symbol interference (ISI) but also to eliminate the inter-block interferences (IBI) from the neighboring blocks. The algorithm derivation and the roles played by each component the are presented in detail. It is then show that the time-concatenated turbo equalization systems outperforms conventional CP-transmission and/or the other CP-free techniques in terms of BER performance, convergence property, and sensitivity to Doppler spread.
- non Orthogonal Frequency Division Multiplexing (nOFDM)
The turbo equalization concept is also used to eliminate the inter-carrier interference (ICI) caused by intentionally overlapping the sub-carriers, as is the equalization techniques for CP-free techniques. is analogous to the CHATUE algorithm. The main objectives of this section is first to introduce the nOFDM technique, and then to provide the course taker with the knowledge that how nOFDM systems with equalization can achieve high spectrum efficiency and improve the BER performance, compared to the conventional OFDM system.
- 1 Introduction of Instructors
- 2 Goals and Objectives, and Methodologies
- 3.1 Introduction to Frequency Domain Turbo Equalization (by Prof. Tad Matsumoto)
- - Sliding Window Time Domain Processing
- - Extension to MIMO
- - Block-wise Time Domain Processing
- - Major Mistakes Found in the Literatures
- - Conversion to Frequency Domain
- 3.2 Information Theoretic Consideration of Turbo Equalization
- - Introduction to EXIT Analysis
- - Matching between Coding and Equalization
- - Do we need Turbo Code?
- - Doped Accumulator
- 3.3 Time-Concatenated Turbo Equalization systems without cyclic prefix (by Prof. Khoirul Anwar)
- - Concept of Time-Concatenation/CHAined TUrbo Equalization (CHATUE)
- - Algorithm Derivation
- - Performance Evaluation
- - Application to SC-FDMA
- - Complexity assessment
- - Comparison between CHATUE and the conventional Frequency Domain Turbo Equalization, as well as between CHATUE and other CP-free technique.
- - Extension to Multi-User MIMO
- -- Outage Analysis
- 3.4 non-Orthogonal Frequency Division Multiplexing (nOFDM) (by Ms. Husna Marshal)
- - Introduction to nOFDM Concept
- - System Model for nOFDM with Turbo Equalization
- - Information Theoretic Considerations, EXIT Analysis, and Mutual Information Analysis.
- - Performance Evaluation
- - SC-FDMA with nOFDM: Feasibility Study
- 4 Conclusions
- Scientist and engineers working on and/or interested in turbo equalization in academic and industry.
- Those who are intended to improve and strengthen the knowledge of turbo signal processing, coding, and modulation for the wireless communication systems.
- Especially, those engineers deeply involved in development of future broadband mobile communications systems using single-carrier frequency division multiple access (SC-FDMA).
Low complexity frequency turbo equalization is explained in detail, covering from very basic to advanced versions. A novel new idea, chained turbo equalization (CHATUE) is introduced where its mathematical basis to practical issues will be covered. As analogous to the CHATUE algorithm, a new signaling concept, nOFDM and an ICI equalization technique for nOFDM is presented in detail. They are all provided as a package in a solid manner.
Tad MATSUMOTO received his B.S., M.S., and Ph.D. degrees from Keio University, Yokohama, Japan, in 1978, 1980, and 1991, respectively, all in electrical engineering. Prof. Matsumoto serving as a full professor at Japan Advance Institute of Science and Technology (JAIST). He has also serving as a Finland Distinguished Professor for a period from January 2008 to December 2012, funded by the Finnish National Technology Agency (Tekes) and Finnish Academy, under which he preserves the rights to participate in and apply to European and Finnish national projects. He is a Fellow of IEEE and a Member of IEICE. He is serving as an IEEE Vehicular Technology Distinguished Lecturer during the term July 2011-June 2013.
Khoirul Anwar graduated cum laude from the department of Electrical Engineering (Telecommunications), Institut Teknologi Bandung (ITB), Bandung, Indonesia in 2000. He received Master and Doctor Degrees from Graduate School of Information Science, Nara Institute of Science and Technology (NAIST) in 2005 and 2008, respectively. Since then, he has been appointed as an assistant professor in NAIST. He received best student paper award from the IEEE Radio and Wireless Symposium 2006 (RWS'06), California-USA, Best Paper of Indonesian Student Association (ISA 2007), Kyoto, Japan in 2007, and Best Presenter in International Conference Sustain 2011. Since September 2008, he is with the School of Information Science, Japan Advanced Institute of Science and Technology (JAIST) as an assistant professor. His research interests are network information theory, error control coding, iterative decoding and signal processing for wireless communications. He has authored around 45 scientific publications in these areas. Dr. Anwar is a member of IEEE, and IEICE Japan.
Norulhusna Ahmad received her B.Sc and M. Sc. Degrees in electrical engineering from Universiti Teknologi Malaysia (UTM) in 2000 and 2003, respectively. Since 2001, UTM as an academic staff and currently she has pursued her PhD in the same university. In April 2011 until May 2011, she was with Matumoto Laboratory in Japan Advanced Institute of Science and Technology (JAIST) as a visiting researcher. She has conducting a research on non-Orthogonal Frequency Division Multiplexing (n-OFDM) with turbo Soft Cancellation - Minimum Mean Square Error (SC-MMSE). Her research interest include digital signal processing in wireless communication emphasis on error-correcting codes and iterative decoding.