| 摘要: |
| 干扰对齐通过预编码的方式将接收到的干扰对齐到接收机的子空间中,从而为期望信号提供了最大化的自由度.重点探究实现了干扰对齐预编码的三种典型的算法——最小化干扰泄露功率算法、最大化信干噪比算法以及最小化均方误差算法,三种算法都利用了无线信道的互易性,通过初始网络编码和逆网络编码的相互迭代最终拿到了各自优化准则下的干扰对齐预编码.通过上行传输速率这一性能函数分析和比较了这三种算法.仿真结果表明了各自算法的优劣.最后简要分析了干扰对齐算法的可行性与其广阔的应用前景. |
| 关键词: 迭代算法 干扰对齐 互易性 最小化干扰泄露功率 最大化信干噪比 最小化均方误差 |
| DOI： |
| 分类号: |
| 基金项目:上海市教育委员会科研创新项目(12ZZ126);上海师范大学重点学科(DZL126) |
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| Distributed interference alignment iterative algorithms in symmetric wireless network |
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YANG Jingwen, LI Li, QIU Hao
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College of Information,Mechanical and Electrical Engineering,Shanghai Normal University
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| Abstract: |
| Interference alignment is a novel interference alignment way,which is widely noted all of the world.Interference alignment overlaps interference in the same signal space at receiving terminal by precoding so as to thoroughly eliminate the influence of interference impacted on expected signals,thus making the desire user achieve the maximum degree of freedom.In this paper we research three typical algorithms for realizing interference alignment,including minimizing the leakage interference,maximizing Signal to Interference plus Noise Ratio (SINR) and minimizing mean square error(MSE).All of these algorithms utilize the reciprocity of wireless network,and iterate the precoders between original network and the reverse network so as to achieve interference alignment.We use the uplink transmit rate to analyze the performance of these three algorithms.Numerical simulation results show the advantages of these algorithms.which is the foundation for the further study in the future.The feasibility and future of interference alignment are also discussed at last. |
| Key words: iterative algorithm interference alignment reciprocity minimizing the leakage interference maximizing signal to interference plus noise ratio minimizing mean square error |
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