scholarly journals Hybrid ARQ Scheme with Antenna Permutation for MIMO Systems in Slow Fading Channels

2006 ◽  
pp. 1222-1227 ◽  
Author(s):  
Jianfeng Wang ◽  
Meizhen Tu ◽  
Kan Zheng ◽  
Wenbo Wang
Keyword(s):  
Fading Channels ◽  
Mimo Systems ◽  
Hybrid Arq ◽  
Slow Fading ◽  
Slow Fading Channels

scholarly journals Two-layer MIMO Network Coding based Scheme for Cooperative Communications

2014 ◽  
pp. 123
Author(s):  
Nguyen Viet Hung ◽  
Nguyen Viet Dam ◽  
Nguyen Sy Quy
Keyword(s):  
Network Coding ◽  
Fading Channels ◽  
Cooperative Communications ◽  
Information Transfer ◽  
Mimo Systems ◽  
Phase Shift Keying ◽  
Slow Fading ◽  
Trellis Coded ◽  
Shift Keying ◽  
Slow Fading Channels

In  this  contribution,  we  propose  and investigate  a  novel  scheme  of  two-layer  multi-input multi-output  (MIMO)  systems  employing  network coding  in  the  scenario  of  cooperative  communication. The first MIMO layer of our system is constituted from an  Irregular  Convolutional  Coded  Unity  Rate  Coded Space  Time  Trellis  Coded  M-ary  Phase  Shift  Keying (IrCC-URC-STTC-MPSK) schemes. The MIMO coding scheme is designed with the aid of Extrinsic Information Transfer  (EXIT)  charts  for  approaching  the corresponding  channel  capacity  in  fast  fading environment.  The  second  Network  Coding  based Virtual-MIMO layer is incorporated into our system for coping  with  the  bad  effect  of  slow  fading  channels, which  may  not  be  handled  by  the  first  MIMO  coding layer. Based on simulation results, our proposed scheme outperforms the conventional MIMO systems, where no cooperation is invoked for exploiting the diversity gain brought  by  the  aiding  of  other  users  available  in  the system.

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