Pilot Signal Design for Massive MIMO Systems: A Received Signal-To-Noise-Ratio-Based Approach
Pilot Signal Design for Massive MIMO Systems: A Received Signal-To-Noise-Ratio-Based Approach
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DOI：
10.1109/lsp.2014.2364180
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发表时间：
2014-06
影响因子：
3.9
通讯作者：
Jungho So;Donggun Kim;Yuni Lee;Y. Sung
中科院分区：
文献类型：
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作者：
Jungho So;Donggun Kim;Yuni Lee;Y. Sung
在这封信中，大规模MIMO系统的导频信号设计，以最大化基于训练的接收信噪比（SNR）被认为是在两个信道模型：块高斯马尔可夫和块独立同分布（i.i.d.）渠道模式首先，它表明，块高斯-马尔可夫信道模型下，最优导频设计问题减少到一个半定规划（SDP）的问题，它可以通过一个标准的凸优化工具数值求解。第二，在块i.i.d.信道模型，得到了封闭形式的最优解。数值结果表明，所提出的方法产生明显优于其他现有的导频设计方法的接收信噪比。
In this letter, the pilot signal design for massive MIMO systems to maximize the training-based received signal-to-noise ratio (SNR) is considered under two channel models: block Gauss-Markov and block independent and identically distributed (i.i.d.) channel models. First, it is shown that under the block Gauss-Markov channel model, the optimal pilot design problem reduces to a semi-definite programming (SDP) problem, which can be solved numerically by a standard convex optimization tool. Second, under the block i.i.d. channel model, an optimal solution is obtained in closed form. Numerical results show that the proposed method yields noticeably better performance than other existing pilot design methods in terms of received SNR.