Paper Info
Title
A Virtual Layered Space-Frequency Receiver For Multiuser Mimo-Ofdm Systems
Abstract
In this paper, we propose a virtual layered space-frequency receiver with an ordered successive detector for multiuser multiple-input multiple-output (MU-MIMO) systems where multiple transmitters cooperate with one another. The proposed receiver enables high-speed transmission in the systems even if the transmitters know only partial channel state information (CSI). Actually, the receiver shows such superior performance when the concept of "virtual channel" is applied to cooperative MU-MIMO systems. Moreover, we propose an iterative detection scheme for the receiver; in this scheme, some signals from the Viterbi decoder are fed back to the ordered successive detector. The proposed iterative scheme helps improve the transmission speed when the number of cooperating transmitters is increased. We evaluate the performance of MIMO systems in which the transmitters have four antennas each and two users have two antennas. The receiver can double the transmission speed at the cost of 3 dB in E-b/N-0 at a BER of 10(-4). Furthermore, the receiver can triple the transmission speed at the cost of 7 dB in E-b/N-0 at a BER of 10(-4). When the system has three transmitters, we observe an error floor. However, the proposed iterative method can suppress the error to a value below BER = 10(-7).
Year
DOI
Venue
2011
10.1109/VETECF.2011.6092886
2011 IEEE VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL)
Keywords
Field
DocType
vectors,viterbi decoder,viterbi decoding,ofdm modulation,mimo,iterative methods,radio receivers,radio transmitters,bit error rate,channel state information,iteration method
MIMO-OFDM,Transmitter,Computer science,MIMO,Electronic engineering,Viterbi decoder,Detector,Orthogonal frequency-division multiplexing,Bit error rate,Channel state information
Conference
ISSN
Citations 
PageRank 
1090-3038
1
0.39
References 
Authors
4
7
Name
Order
Citations
PageRank
Akihito Taya132.46
Satoshi Denno27625.60
Daisuke Umehara34512.27
Masahiro Morikura418463.42
Hidekazu Murata516437.72
Koji Yamamoto613545.58
Susumu Yoshida713425.22