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http://dx.doi.org/10.7840/KICS.2011.36C.2.57

Performance Analysis of Cooperative Network Error Correcting Scheme Using Distributed Turbo Code and Power Allocation  

Lim, Jin-Soo (한양대학교 전자컴퓨터공학과 부호및통신 연구실)
Ok, Jun-Ho (한양대학교 전자컴퓨터공학과 부호및통신 연구실)
Yoo, Chul-Hae ((주) STX 엔진)
Shin, Dong-Joon (한양대학교 전자컴퓨터공학과 부호및통신 연구실)
Abstract
A two-way relay channel is a bidirectional cooperative communication channel between two nodes using a relay. In many cooperative communication schemes, a relay transmits its data to each node using separate channels. However, in the two-way relay channel, a relay can broadcast the network-coded signal to both nodes in a same time slot, which can increase the system throughput. In this paper, a new cooperative network error correcting scheme using distributed turbo code in a two-way relay channel is proposed. The proposed scheme not only increases the system throughput using network code but also improves the performance by utilizing the LLR information from relay node and other user node through distributed turbo code. Also, a power allocation scheme is investigated for various channel conditions to improve the system performance.
Keywords
Distributed turbo code; network coding; power allocation; relay; two-way relay channel;
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