基于Turbo码的非理想中继协作性能研究

基于Turbo码的非理想中继信道协作方式是在加性高斯白噪声(AWGN)的环境下提出的一种协作通信方式。源节点将编码并调制后的信息分别传送给中继节点和目的节点,中继节点对接收到的码字进行译码、传送,目的节点接收2路不同的信号(一路是来自源节点未经过交织的信息比特和校验比特,另一路是来自中继信道经过交织后来的校验比特)并采用联合迭代的译码方式对其进行译码。仿真结果表明,同等条件下,基于Turbo码的非理想中继信道协作方式在纠错方面的性能远胜于点对点的Turbo码非协作方式。

Research on Performance of Turbo-based Non-ideal Relay Cooperation System

A Turbo-based non-ideal relay cooperation system is proposed over additive white Gaussian noise（AWGN）channel.The source broadcasts coded message to both relay node and destination,respectively;while the relay node decodes and delivers the message it received from the source;and the destination receives two different signals,one directly from the source includes non-interleaved information bits and parity check bits,and the other from the relay just includes interleaved parity check bits,then it decodes the message with joint iterative decoding technique.Results indicate that the performance of turbo-based relay cooperation system is much better than point-to-point turbo-coded system without cooperation under the identical conditions.