DocumentCode :
3604980
Title :
A Novel Tensor-Based Receiver for Joint Symbol and Channel Estimation in Two-Hop Cooperative MIMO Relay Systems
Author :
Jianhe Du ; Chaowei Yuan ; Zhongwei Hu ; Heyun Lin
Author_Institution :
Sch. of Inf. & Eng., Commun. Univ. of China, Beijing, China
Volume :
19
Issue :
11
fYear :
2015
Firstpage :
1961
Lastpage :
1964
Abstract :
In this letter, we develop a novel tensor-based receiver for two-hop cooperative multiple-input multiple-output (MIMO) relay systems. At the source node, the proposed transmit signal design combines the linear constellation precoding with time-domain spreading. We show that the received signal at the destination node is formulated as a fourth-order tensor satisfying a nested parallel factor (PARAFAC) model, and then a new tensor-based receiver is derived by resorting to the proposed receiver algorithm. Under the assumption that channel state information (CSI) is not available at each node, the proposed receiver jointly estimates the channel parameters and transmitted symbols. Numerical results show that the proposed receiver outperforms some competing tensor-based receivers and operates close to the zero forcing (ZF) receiver with perfect CSI.
Keywords :
MIMO communication; channel estimation; cooperative communication; precoding; radio receivers; relay networks (telecommunication); tensors; PARAFAC model; channel estimation; channel parameters; channel state information; destination node; fourth-order tensor; joint symbol estimation; linear constellation precoding; multiple-input multiple-output systems; nested parallel factor model; received signal; source node; tensor-based receiver; time-domain spreading; transmit signal design; transmitted symbols; two-hop cooperative MIMO relay systems; Bit error rate; Channel estimation; Joints; MIMO; Receivers; Relays; Tensile stress; MIMO relay; Tensor-based receiver; fourth-order tensor; nested PARAFAC model;
fLanguage :
English
Journal_Title :
Communications Letters, IEEE
Publisher :
ieee
ISSN :
1089-7798
Type :
jour
DOI :
10.1109/LCOMM.2015.2473172
Filename :
7225149
Link To Document :
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