基于格拉斯曼码本酉旋转的鲁棒码本设计

Shaohua Li, Haiyan Jia, Jianfeng Kang
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引用次数: 2

摘要

在过去的几年中,人们对多输入多输出通信系统中量化预编码的码本设计进行了广泛的研究。格拉斯曼线包装(GLP)码本在工业和文学中有着广泛的应用。传统的GLP码本只能在空间不相关信道中表现出良好的性能。但实际通道具有不同的空间特征。为了设计一种鲁棒地适应任意统计信道的码本,本文提出了一种通过格拉斯曼线填充码本的幺正旋转构造的码本。旋转使得部分码字属于离散傅里叶变换码本,同时保持局部GLP性质不变。结合DFT码本和GLP码本的优点,所提出的码本在不相关信道和相关信道中都能取得良好的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Robust Codebook Design Based on Unitary Rotation of Grassmannian Codebook
Codebook design has been investigated extensively over the past few years for quantized precoding in Multiple-Input Multiple-Output (MIMO) communication system. Grassmannian line packing (GLP) codebook is widely used in industry and literature. Traditional GLP codebook can only show good performance in spatial uncorrelated channel. But the practical channel is with varied spatial characteristic. In order to design one codebook robustly adapted to arbitrary statistic channel, a novel codebook constructed through unitary rotation of Grassmannian Line Packing (GLP) codebook is proposed in this paper. The rotation enables some codewords belong to Discrete Fourier Transform (DFT) codebook, meanwhile keeps the GLP property unchanged locally. With the virtues of DFT codebook and GLP codebook, the proposed codebook can achieve good performance in both uncorrelated channel and correlated channel.
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