Performance of cooperative multi-hop networks with randomly relayed MDS codeword blocks
Performance of cooperative multi-hop networks with randomly relayed MDS codeword blocks
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DOI：
10.1109/icoin.2011.5723107
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发表时间：
2011-03
期刊：
影响因子：
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通讯作者：
K. Sakakibara;Daichi Ito;Jumpei Taketsugu
中科院分区：
文献类型：
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作者：
K. Sakakibara;Daichi Ito;Jumpei Taketsugu
对协作多跳网络的中断概率和频谱效率进行了评估，其中在每一跳放置L中继节点，在链路层采用编码率为1/L的最大距离可分(MDS码)编码。MDS码的码字被分割成L块。当每个中继节点接收到MDS码的两个或更多个码字块时，它聚集这些块，用穿孔的MDS码纠正信道差错，用MDS码编码消息，并中继一个随机选择的码字块。我们使用一个吸收马尔可夫链来分析其性能。数值结果表明，在L≥3中加入MDS码可以获得显著的改进。
We evaluate the outage probability and the spectral efficiency of cooperative multi-hop networks, where L relay nodes are placed at each hop and an MDS (Maximum Distance Separable) code of coding rate 1/L is employed at the link-layer. A codeword of the MDS code is partitioned into L blocks. When each relay node receives two or more codeword blocks of the MDS code, it aggregates the blocks, corrects channel errors with the punctured MDS code, encodes the message by the MDS code, and relays one randomly selected codeword block. We analyze the performance using an absorbing Markov chain. Numerical results indicate that significant improvement can be achieved by incorporating an MDS code for L ≥ 3.