Amplify-and-Forward Relay Networks for Bit-Interleaved Space-Time Codes

2013 ◽  
pp. 753-761
Author(s):  
Tao He ◽  
Susheel Kumar Chanda
Keyword(s):  
Relay Networks ◽  
Space Time ◽  
Amplify And Forward ◽  
Space Time Codes

Power Allocation Strategies for Distributed Space-Time Codes in Two-Way Relay Networks

2010 ◽  
Vol 58 (10) ◽  
pp. 5331-5339 ◽  
Author(s):  
Wenjin Wang ◽  
Shi Jin ◽  
Xiqi Gao ◽  
Kai-Kit Wong ◽  
Matthew R. McKay
Keyword(s):  
Power Allocation ◽  
Relay Networks ◽  
Space Time ◽  
Space Time Codes ◽  
Allocation Strategies

Study on Quasi-Orthogonal Space Time Block Code Based on Amplify-and-Forward Relay Networks

2012 ◽  
Vol 433-440 ◽  
pp. 6014-6018
Author(s):  
Xue Yi Zhang ◽  
Jie Sun
Keyword(s):  
Relay Networks ◽  
Block Code ◽  
Space Time ◽  
Time Block ◽  
Amplify And Forward ◽  
Decoding Algorithm ◽  
Space Time Block Code ◽  
Orthogonal Space ◽  
Orthogonal Code ◽  
The Given

A kind of quasi-orthogonal space time block code for amplify-and-forward relay networks is analyzed in this paper. At the source, 4 single-antenna users transmit the quasi-orthogonal space time block code matrix. At the relay node, fast maximum-likelihood decoding algorithm is adopted and the decoded symbols are then encoded into quasi-orthogonal code which is transmitted through transmit antenna. At the destination, pair-wise decoding algorithm is utilized. Finally we compare the performance of the quasi-orthogonal space time block code in relay networks with that of the quasi-orthogonal space time block code in traditional communication system. Simulation results show that at the given BER of 10-3, the new code can provide about gain of 4dB and 1 dB comparing with that for the traditional quasi-orthogonal code, respectively. And at the given BER of 10-5, the new code can provide about gain of 4.6dB and 2.6dB comparing with that for the old quasi-orthogonal code, respectively.

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