Degrees of Freedom of the MIMO Y Channel: Signal Space Alignment for Network Coding

2010 ◽  
Vol 56 (7) ◽  
pp. 3332-3342 ◽  
Author(s):  
Namyoon Lee ◽  
Jong-Bu Lim ◽  
Joohwan Chun
Keyword(s):  
Network Coding ◽  
Degrees Of Freedom ◽  
Signal Space

scholarly journals Finite-SNR Diversity-Multiplexing Tradeoff for Cooperative Transmissions with Opportunistic Network Coding

2012 ◽  
Vol 2012 ◽  
pp. 1-14
Author(s):  
Guoyou Li ◽  
Yajian Zhou ◽  
Jingxian Zhou ◽  
Kangfeng Zheng ◽  
Yixian Yang
Keyword(s):  
Network Coding ◽  
Fading Channels ◽  
Degrees Of Freedom ◽  
Relay Node ◽  
Cooperative Transmission ◽  
Direct Transmission ◽  
Opportunistic Network ◽  
Transmission Scheme ◽  
Opportunistic Network Coding ◽  
Diversity Multiplexing Tradeoff

We present a multiuser cooperative transmission scheme with opportunistic network coding (CTONC), which can improve system performance. In contrast to direct transmission and conventional cooperative transmission, the CTONC allows the relay node to decide whether or not to help do cooperation and employ network coding based on the limited feedback from the destinations. It will not help a transmission pair unless its direct transmission fails. This enables CTONC to make efficient use of the degrees of freedom of the channels. We derive and analyze the diversity-multiplexing tradeoff for the CTONC over Rayleigh fading channels at finite signal-to-noise ratios (SNRs). Theoretical analysis and numerical results show that the proposed scheme achieves better performance gain in terms of average mutual information, outage probability, and finite-SNR diversity-multiplexing tradeoff.

scholarly journals A Signal-Space Aligned Network Coding Approach to Distributed MIMO

2017 ◽  
Vol 65 (1) ◽  
pp. 27-40 ◽  
Author(s):  
Tao Yang ◽  
Xiaojun Yuan ◽  
Qifu Tyler Sun
Keyword(s):  
Network Coding ◽  
Signal Space
Sign in / Sign up

Export Citation Format

Share Document