Cooperative communications and sensing

The current and future communication and sensing systems such as cognitive radio, radar, or sensor network include a network of multiple communication modules/devices or sensors. The network of communication modules/devices or sensors should operate with multiple goals managed by an intelligent platform network that can manage the dynamics of each device/sensor to meet the common goals of the platform, rather than each device/sensor to operate as an independent system. Therefore, it is significant to perform cooperative communication and sensing within and between platforms of sensors and their communication modules/devices. This special issue contains 14 papers selected from submissions to the 6th International Conference on Communications and Networking in China (CHINACOM 2011), with further extension and satisfactory external peer reviews. These papers highlight some of the current research interests and achievements in the area of cooperative communications and sensing. The topics include cognitive radio, spectrum sensing, MIMO system, radar, compressive sensing, and localization. The paper by Huang et al. analyzed the performance bonds of a wireless relay system that consists of several relays stations working on both amplifier-and-forward (AF) and decode-and-forward (DF) algorithms. The outage probability behavior of the proposed mixed AF and DF relay systems under independent Nakagami-m fading channels was studied. The trade-off between the complexity and performance issues was also discussed. The paper by Sun et al. presented a review on evolution from symbol-level space-time coded MIMO to chip-level space-time coded MIMO. It discussed the characteristics and limitations of traditional symbol-level space-time coding schemes. The proposed chip-level space-time coded MIMO works well even in a fast fading channel in addition to its flexibility to achieve diversity and multiplexing gains simultaneously in varying channel environments. The paper by Liu et al. studied cognitive radio and proposed a double cooperative detection scheme based on weighed combination in order to improve the global detected performance of the cooperative detection. The paper by Peng and Adachi analyzed the performance of a single-carrier frequency domain adaptive antenna array (SC-FDAAA) in a distributed antenna network (DAN) system. In order to make it clear whether the performance of SC-FDAAA can benefit from the distributed nature of DAN system or not, they made a comparison between DAN system and the traditional cellular system, that is, central antenna network system. The paper by Li et al. proposed a conception on the terahertz communication system for plasma sheath penetration. An idea based on the capability of radiation from the terahertz communication system to penetrate the plasma sheath was proposed to provide the theoretical basis for real-time communication with the nearcraft. The paper by Zhang et al. studied single-carrier frequency-domain equalization (SC-FDE). The feasibility of building SC-FDE system was explored by comparing performance with orthogonal frequency division multiplexing (OFDM). It studied on a dual-mode (DD-LMS+MCMA) blind equalization algorithm applied in a single-carrier system. The simulation model of image transmission in SC-FDE system was built with better result through the comparative analysis of image. The paper by Wu et al. proposed a new compressive sensing-based compression and recovery ultra-wideband (UWB) communication system. Real-world UWB signal was collected and processed to evaluate the performance of our proposed system. Simulation results showed that the data could be perfectly recovered if the compression ratio does not exceed 2.5:1 when Bernoulli matrix is chosen as the sensing matrix. The paper by Zou et al. focused on improving the system capacity of 60GHz wireless personal area networks and put forward an effective timeslot allocation scheme for spatial reuse, which combines the existing exclusive-region-based scheduling algorithm with simple power control. The paper by Huang and Pi proposed a GPS-based positioning and navigation with aid of wireless network positioning scheme, which utilizes the existing resources of the wireless communication network to provide the cheaper and more accurate urban positioning service with the higher survivability. The paper by Arianpoo et al. presented a survey on applications of network coding to improve TCP performance over wireless mesh networks (WMNs). It provided a thorough survey of TCP performance issues over WMNs and the available solutions to address these issues. Among the existing methods, network coding and the ways that TCP interacts with network-coded systems were focused. Some open research areas in this field were suggested. The paper by Yu et al. proposed a combined code reuse scheme with two-dimensional orthogonal variable spreading factor codes assignment algorithm for uplink multi-user/multi-rate block spread multi-cellular code division multiple access (CDMA). It was confirmed by the computer simulation that the proposed code assignment algorithm improves the code reuse efficiency while achieving lower blocking probability than traditional CDMA. The paper by Yang et al. proposed a relatively complete and robust optimization model under the scenario where multi-secondary users cooperatively sense multi-channels. The objective of this model was to maximize the system throughput, while aiming to jointly optimize the parameters including the sensing time and the weight coefficients of the sampling results. The results showed the performance advantage of the proposed model on improving the system throughput by comparing with other state-of-the-art optimization models. The paper by Shi et al. proposed a new linear fractional shift invariant system structure associated with the fractional Fourier transform, and the linear time-invariant systems were noted as special cases. The eigenfunctions and eigenvalues of the new LFSI systems were presented. The paper by Wu et al. studied channel estimation algorithms for cooperative spectrum sensing in AF cooperative system. The influence of channel estimation error to system performance was firstly deduced, and then linear minimum mean-square error (LMMSE) channel estimation algorithm with delay time-domain windowing technique (LMMSE-DTW) and modified singular value decomposition based LMMSE algorithm (SVD-LMMSE) were proposed to improve the channel estimation performance for CDMA system and OFDM system, respectively. We would like to thank all authors for contributing papers to the special issue. We appreciate the staff of Wireless Communications and Mobile Computing for their support in editing this special issue. Qilian Liang is a Professor at the Department of Electrical Engineering, University of Texas at Arlington (UTA). He received the BS degree from Wuhan University in 1993, the MS degree from Beijing University of Posts and Telecommunications in 1996, and the PhD degree from University of Southern California (USC) in May 2000, all in Electrical Engineering. Prior to joining the faculty of the University of Texas at Arlington in August 2002, he was a Member of Technical Staff in Hughes Network Systems Inc. at San Diego, California. His research interests include wireless sensor networks, wireless communications, compressive sensing, smart grid, signal processing for communications, fuzzy logic systems and applications, and so on. Dr Liang has published more than 250 journal and conference papers and seven book chapters. He received the 2002 IEEE Transactions on Fuzzy Systems Outstanding Paper Award, the 2003 US Office of Naval Research (ONR) Young Investigator Award, the 2005 UTA College of Engineering Outstanding Young Faculty Award, the 2007, 2009, 2010 US Air Force Summer Faculty Fellowship Program Award, the 2012 UTA College of Engineering Excellence in Research Award, and the 2013 UTA Outstanding Research Achievement Award. Victor C. M. Leung received the BASc (Hons) degree in electrical engineering from the University of British Columbia (UBC) in 1977 and was awarded the APEBC Gold Medal as the head of the graduating class in the Faculty of Applied Science. He attended graduate school at UBC on a Natural Sciences and Engineering Research Council Postgraduate Scholarship and completed the PhD degree in electrical engineering in 1981. From 1981 to 1987, Dr Leung was a Senior Member of Technical Staff and satellite system specialist at MPR Teltech Ltd., Canada. In 1988, he was a Lecturer in the Department of Electronics at the Chinese University of Hong Kong. He returned to UBC as a faculty member in 1989 and currently holds the positions of Professor and TELUS Mobility Research Chair in Advanced Telecommunications Engineering in the Department of Electrical and Computer Engineering. Dr Leung has co-authored more than 700 technical papers in international journals and conference proceedings, 29 book chapters, and co-edited eight book titles. Several of his papers had been selected for best paper awards. His research interests are in the areas wireless networks and mobile systems. Dr Leung is a registered professional engineer in the Province of British Columbia, Canada. He is a Fellow of IEEE, the Royal Society of Canada, the Engineering Institute of Canada, and the Canadian Academy of Engineering. He was a Distinguished Lecturer of the IEEE Communications Society. He is a member of the editorial boards of the IEEE Wireless Communications Letters, Computer Communications, and several other journals and has previously served on the editorial boards of the IEEE Journal on Selected Areas in Communications—Wireless Communications Series, IEEE Transactions on Wireless Communications, IEEE Transactions on Vehicular Technology, IEEE Transactions on Computers, and Journal of Communications and Networks. He has guest-edited many journal special issues and contributed to the organizing committees and technical program committees of numerous conferences and workshops. He was a recipient of the IEEE Vancouver Section Centennial Award and 2012 UBC Killam Research Prize. Weixiao Meng received the BEng, MEng, and PhD degrees from Harbin Institute of Technology (HIT), Harbin, China, in 1990, 1995, and 2000, respectively. From 1998 to 1999, he worked at NTT DoCoMo on adaptive array antenna and dynamic resource allocation for beyond 3G as a senior visiting researcher. He is now a full professor at the School of Electronics and Information Engineering of HIT. His research interests include broadband wireless communications and networking, MIMO, GNSS receiver, and wireless localization technologies. He has published three books and over 190 papers on journals and international conferences. He is the Chair of IEEE Communications Society Harbin Chapter, a senior member of the IEEE ComSoc, IET, the China Institute of Electronics, and the China Institute of Communication. He has been an editorial board member for Wiley's WCMC Journal since 2010 and the area editor for PHYCOM journal since 2014. He acted as leading TPC co-chair of ChinaCom2011, leading Services and Applications track co-chair of IEEE WCNC2013, Awards co-chair of IEEE ICC2015, and Wireless Networking Symposia co-Chair. In 2005, he was honored provincial excellent returnee and selected into New Century Excellent Talents (NCET) plan by Ministry of Education, China, in 2008. Fumiyuki Adachi received the BS and DrEng degrees in electrical engineering from Tohoku University, Sendai, Japan, in 1973 and 1984, respectively. In April 1973, he joined the Electrical Communications Laboratories of Nippon Telegraph & Telephone Corporation (now NTT) and conducted various types of research related to digital cellular mobile communications. From July 1992 to December 1999, he was with NTT Mobile Communications Network, Inc. (now NTT DoCoMo, Inc.), where he led a research group on wideband/broadband CDMA wireless access for IMT-2000 and beyond. Since January 2000, he has been with Tohoku University, Sendai, Japan, where he is a distinguished Professor of Communications Engineering at the Graduate School of Engineering. His research interest is in the areas of wireless signal processing and networking including broadband wireless access, equalization, transmit/receive antenna diversity, MIMO, adaptive transmission, channel coding, and so on. From October 1984 to September 1985, he was a United Kingdom SERC Visiting Research Fellow in the Department of Electrical Engineering and Electronics at Liverpool University. Dr Adachi is an IEEE Fellow and a VTS Distinguished Lecturer for 2011 to 2013. He is a co-recipient of the IEEE Vehicular Technology Transactions Best Paper of the Year Award 1980 and again 1990 and also a recipient of Avant Garde award 2000. He is a Fellow of Institute of Electronics, Information and Communication Engineers of Japan (IEICE) and is a recipient of IEICE Achievement Award 2002 and a co-recipient of the IEICE Transactions Best Paper of the Year Award 1996, 1998, and again 2009. He is a recipient of Thomson Scientific Research Front Award 2004, Ericsson Telecommunications Award 2008, Telecom System Technology Award 2009, Prime Minister Invention Prize 2010, British Royal Academy of Engineering Distinguished Visiting Fellowship 2011, and KDDI Foundation Research Award 2012.

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