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arXiv 1503.07604cs.ITcs.NImath.IT
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全双工MIMO系统中的同时双向链路选择

Simultaneous Bidirectional Link Selection in Full Duplex MIMO Systems

Mingxin Zhou, Lingyang Song, Yonghui Li, Xuelong Li

摘要:

在本文中,我们考虑一个点对点全双工(FD)MIMO通信系统。我们假设每个节点都配备有任意数量的天线,可以用于发送或接收。使用FD无线电,可以同时实现两个节点之间的双向信息交换。在本文中,我们设计了双向链路选择方案,通过选择一对发射和接收天线两端的通信在每个方向上,以最大限度地提高加权和率或最小化加权和符号出错率(SER)。最优选择方案需要穷举搜索,因此它们是高度复杂的。为了解决这个问题,我们提出了一个串行最大选择算法,它接近穷举搜索方法,具有更低的复杂度。在Serial-Max方法中,以两步串行方式选择在两端具有最大“可获得SINR”的天线对。分析了所提出的Serial-Max方法的性能,推导了平均加权和速率和加权和SER的封闭表达式。仿真结果验证了分析的正确性。分析和仿真结果表明,随着天线数目的增加,串行最大方法的性能接近穷举搜索方案的总和速率和总和SER。

英文摘要:

In this paper, we consider a point to point full duplex (FD) MIMO communication system. We assume that each node is equipped with an arbitrary number of antennas which can be used for transmission or reception. With FD radios, bidirectional information exchange between two nodes can be achieved at the same time. In this paper we design bidirectional link selection schemes by selecting a pair of transmit and receive antenna at both ends for communications in each direction to maximize the weighted sum rate or minimize the weighted sum symbol error rate (SER). The optimal selection schemes require exhaustive search, so they are highly complex. To tackle this problem, we propose a Serial-Max selection algorithm, which approaches the exhaustive search methods with much lower complexity. In the Serial-Max method, the antenna pairs with maximum "obtainable SINR" at both ends are selected in a two-step serial way. The performance of the proposed Serial-Max method is analyzed, and the closed-form expressions of the average weighted sum rate and the weighted sum SER are derived. The analysis is validated by simulations. Both analytical and simulation results show that as the number of antennas increases, the Serial-Max method approaches the performance of the exhaustive-search schemes in terms of sum rate and sum SER.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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