信道状态信息不完全的鲁棒多天线广播

I. Wajid, A. Gershman, S.A. Vowbyov, Y.A. Karanouh
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引用次数: 7

摘要

研究了在发射机信道状态信息错误的情况下,多天线的鲁棒广播问题。最小发射功率准则是在保证每个预期接收器的信噪比(SNR)满足最坏情况下规范有界CSI失配的规定服务质量(QoS)要求的约束下使用的。由此产生的鲁棒广播问题是非凸的,因此很难解决。然而,提出了一种合适的半定松弛(SDR)方法,可以将该问题转化为凸形式并计算出最优发射机权向量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Robust Multi-Antenna Broadcasting with Imperfect Channel State Information
The problem of robust multi-antenna broadcasting is considered in the case of erroneous channel state information (CSI) at the transmitter. The criterion of minimum transmission power is used subject to the constraints guaranteeing that the signal-to-noise ratio (SNR) of each intended receiver satisfies a prescribed quality of service (QoS) requirement for the worst-case norm-bounded CSI mismatch. The resulting robust broadcasting problem is non-convex and, therefore, is difficult to solve. However, a suitable semi-definite relaxation (SDR) of this problem is proposed that enables to transform it to a convex form and to compute the optimal transmitter weight vector.
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