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arXiv 1202.5474cs.ITmath.IT
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单流MIMO干扰信道速率区的Pareto边界:线性收发器设计

Pareto Boundary of the Rate Region for Single-Stream MIMO Interference Channels: Linear Transceiver Design

Pan Cao, Eduard A. Jorswieck, Shuying Shi

摘要:

我们考虑多输入多输出(MIMO)干扰信道(IC),其中每个用户发送单个数据流,每个接收机将干扰视为噪声。本文重点讨论了线性收发器设计下可达速率区域的最外边界(所谓的Pareto边界PB)的计算问题。帕累托边界由严格PB和非严格PB组成。对于两个用户的情况,我们精确地计算了非严格PB和严格PB的两个端点。对于严格的PB,我们制定的问题,以最大限度地提高一个率,而另一个率是固定的,这样就达到了严格的PB点。为了解决这一非凸优化问题,这导致硬耦合的两个发射波束形成器,我们提出了一种交替优化算法。此外,我们将该算法扩展到多用户场景,并显示收敛性。数值仿真结果表明,与现有方法相比,该算法计算出了一系列分布均匀的工作点,这些工作点构成了严格PB的合理且完整的内界.

英文摘要:

We consider a multiple-input multiple-output (MIMO) interference channel (IC), where a single data stream per user is transmitted and each receiver treats interference as noise. The paper focuses on the open problem of computing the outermost boundary (so-called Pareto boundary-PB) of the achievable rate region under linear transceiver design. The Pareto boundary consists of the strict PB and non-strict PB. For the two user case, we compute the non-strict PB and the two ending points of the strict PB exactly. For the strict PB, we formulate the problem to maximize one rate while the other rate is fixed such that a strict PB point is reached. To solve this non-convex optimization problem which results from the hard-coupled two transmit beamformers, we propose an alternating optimization algorithm. Furthermore, we extend the algorithm to the multi-user scenario and show convergence. Numerical simulations illustrate that the proposed algorithm computes a sequence of well-distributed operating points that serve as a reasonable and complete inner bound of the strict PB compared with existing methods.

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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