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- 2017
认知MIMO系统中基于博弈论的干扰对齐算法研究
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Abstract:
为消除用户间干扰，提高认知无线电多输入多输出（CR-MIMO）系统传输速率，给出一种基于博弈论的干扰对齐算法。该算法首先采用注水算法为主用户进行功率分配，同时设计次用户预编码使次用户信号落入主用户未分配功率的子信道。然后将次用户之间的多条干扰链路构成一个博弈群体进行求解，实现次用户之间的干扰对齐。此外，为最大化次用户传输速率，将次用户功率分配问题转换为布谷鸟鸟巢的选择问题，构造适应度函数，得到最优的功率分配方案。数值分析表明，该算法可以消除主次用户的干扰以及次用户之间的干扰，传输速率比最大信干噪比（Max-SINR）算法高2 b·s-1·Hz-2，同时，结合布谷鸟搜索算法进行功率分配后传输速率高于文献[13]。
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