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基于免疫遗传算法的两跳OFDM-relay系统的资源联合优化

DOI: 10.13190/jbupt.200703.70.wut, PP. 70-74

Keywords: OFDM-relay,联合优化,免疫遗传算法,子载波配对

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Abstract:

针对再生中继方式,分析了两跳OFDM-relay系统中的功率、带宽的资源联合优化,并以最大化端到端的信息速率为优化准则,给出了两跳的优化的带宽分配结果和此情况下的功率分配的注水定理算法。同时,基于“免疫遗传算法”提出了两跳子载波配对的策略。仿真结果表明资源联合优化与传统的平均资源分配相比,明显提高系统容量,且功率优化的作用强于带宽优化。通过两跳子载波配对策略能进一步增强系统性能。

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