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Abstract
It has been proved that site diversity is an effective technique to improve the bit error rate (BER) performance for users located at the cell edge. In this paper, the downlink site diversity is applied to a partial block multicarrier-CDMA (PB/MC-CDMA) system, which is a newly proposed and more flexible system compared to the well-known multicarrier CDMA (MC-CDMA) system. We propose a space-time block coding with interference cancellation (STBC-IC) site diversity scheme, where the STBC is adopted on the site diversity participant base stations. A joint code assignment enables the mobile users to get full diversity and reduce inter-cell interference, whereas IC eliminates the intra-cell interference from the users that use the same partial block as the desired user. The BER performances using site diversity, STBC site diversity, and the proposed STBC-IC site diversity in PB system are evaluated by computer simulations. The results show that the site diversity technique works well in the PB system for users close to the cell edge. With the proposed STBC-IC site diversity scheme, we can expect satisfying BER and throughput results.
Additional information
Notes on contributors
Changping Li
Changping Li received the B.E degree at the Department of Information and Electronic Engineering, Jiamusi University, China, and the M.S. degree at the Department of Electronics and Radio Engineering, Kyung Hee University, Korea, in 2008 and 2011, respectively. She is currently working toward the Ph.D degree at the Department of Electronics and Radio Engineering, Kyung Hee University, Korea. Her current research interests are Diversity technology, Optical wireless communi-cation, OFDM and MC-CDMA. E-mail: [email protected]
Kyujin Lee
Kyujin Lee received B.E., M.S. and Ph.D degrees from the Department of Electronics and Radio Engineering at Kyung Hee University, Korea, in 2005, 2007 and 2011, respectively. He joined the research professor in Kyung Hee University from 2011 to 2013. Since 2013, he has been the Department of Electronic Engineering, Semyung University, where he is a Professor. He received the 2009 Excellent Paper Award from the IEEE ISCIT (International Symposium on Communication and Information Technology). His research interests include OFDM, MC-CDMA, MIMO, Resource allocation, and Cognitive radio and Visible Light Communication systems. E-mail: [email protected]
Juphil Cho
Juphil Cho received his B.S. degree in Information and Telecommunication Engineering from Chonbuk National University, Korea, in 1992, and M.S. degree and Ph.D. in Electronic Engineering from Chonbuk National University, in 1994 and 2001, respectively. From 2000 to 2005, he was a senior member of engineering staff at Radio Transmission Methodology Research team with Mobile Telecommunication Research Laboratory, Electronics and Telecommunication Research Institute (ETRI), KOREA. Since 2005, he has been an associate professor at Department of Radio communication Engineering, Kunsan National University, Gunsan, Korea. His current research interests are the wireless communication technology including spectrum sensing, LTE Advanced, Cognitive Radio, interference detection and cancellation in the wireless local and personal area networks. E-mail: [email protected]
Kyesan Lee
Kyesan Lee received a B.E. degree in electrical engineering from Kyung Hee University in Korea and M.S. and Ph.D. degrees from the department of electrical engineering, Keio University, Yokohama, Japan, in 1996, 1999, and 2002, respectively. He joined KDDI R and D Laboratories Inc in 2002 and has received a IEEE VTS Japan young researchers encouragement award. Since 2003, he has been with the College of Electronic and Information, Kyung Hee University, where he is a Professor. He received the excellent paper award in 2009 IEEE ISCIT (International symposium on communication and information technology). He has received the Prime Minister award 2009. He received also the minister award of ministry of education science and technology in 2009. His research interests include wireless communication networks, CDMA, OFDM, MC-CDMA, MC-DS/CDMA, MIMO, and Cognitive radio and Visible Light Communication systems. E-mail: [email protected]