On the Combination of Cooperative Diversity and Network Coding for Wireless Uplink Transmissions
On the Combination of Cooperative Diversity and Network Coding for Wireless Uplink Transmissions
复制标题
DOI：
10.1109/tvt.2011.2112787
复制
发表时间：
2011-02
影响因子：
6.8
通讯作者：
Z. Ding;K. Leung
中科院分区：
文献类型：
--
作者：
Z. Ding;K. Leung
协作分集技术是一种有效的、低成本的抗多径衰落和提高传输可靠性的技术。鉴于现有的协作协议存在遍历容量损失的问题，本文提出将网络编码技术与协作分集技术相结合，用于上行链路传输。两种信息理论度量，即，中断和遍历能力，被开发为建议的传输方案，以协助性能评估。开发的分析结果，这是符合蒙特卡洛模拟，表明该协议可以实现更好的系统鲁棒性和更大的系统吞吐量同时比可比计划。该传输协议的应用调度进行了研究，以实现更好的公平性和吞吐量的权衡。
Cooperative diversity has been recognized as an effective and low-cost technique to combat multipath fading and enhance transmission reliability. Motivated by the fact that many existing cooperative protocols suffer some loss of ergodic capacity, network coding, which is a technique that is well known for its capability to increase system throughput, is proposed in this paper to be combined with cooperative diversity for uplink transmissions. Two kinds of information-theoretic metrics, i.e., outage and ergodic capacities, are developed for the proposed transmission scheme to assist with performance evaluation. The developed analytic results, which are shown to fit well with Monte Carlo simulation, demonstrate that the proposed protocol can achieve better system robustness and larger system throughput simultaneously than comparable schemes. The application of the proposed transmission protocol to scheduling is also studied to achieve better fairness-throughput tradeoff.