Improved maximum a posteriori signal detection for amplify-and-forward relay networks with imperfect channel state information

2014 ◽  
Vol 8 (16) ◽  
pp. 2900-2908
Author(s):  
Yi Zhang ◽  
Seyed Mohammad-Sajad Sadough ◽  
Salah Bourennane ◽  
Mohammad Ali Khalighi
Keyword(s):  
Signal Detection ◽  
Channel State Information ◽  
Relay Networks ◽  
Maximum A Posteriori ◽  
A Posteriori ◽  
Imperfect Channel State Information ◽  
Amplify And Forward ◽  
Channel State ◽  
State Information

scholarly journals Transceiver Designs for MIMO Relaying Systems with Imperfect Channel State Information

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Bridget Durowaa Antwi-Boasiako ◽  
Changick Song ◽  
Kyoung-Jae Lee
Keyword(s):  
Channel State Information ◽  
Minimum Mean Square Error ◽  
Multiple Input Multiple Output ◽  
Imperfect Channel State Information ◽  
Amplify And Forward ◽  
Channel State ◽  
State Information ◽  
Closed Form Solutions ◽  
Relaying Systems ◽  
Transceiver Designs

We focus on imperfect channel state information (ICSI) in closed-loop multiple-input multiple-output (MIMO) amplify-and-forward (AF) relaying systems. First, near-optimal closed-form solutions for transceiver designs are provided for the source-to-relay-to-destination link with ICSI at all nodes. Next, considering a nonnegligible direct link with ICSI available only at the relay and destination and no CSI or ICSI at the source, near-optimal designs are proposed. The Wiener or minimum mean square error (MMSE) filter is employed at the destination to estimate the transmitted signal. The effect of CSI mismatch on the performance of the proposed scheme is then shown through simulations.

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