A Multiple Access Scheme for Non-Coherent SIMO Communications
A Multiple Access Scheme for Non-Coherent SIMO Communications
复制标题
非相干SIMO通信的多址方案
DOI：
10.1109/acssc.2018.8645403
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Sheng Yang
中科院分区：
文献类型：
--
作者：
K. Ngo;Alexis Decurninge;M. Guillaud;Sheng Yang
本文介绍了一种用于非相干单输入多输出（SIMO）通信的多址方案。我们首先通过双射映射将每个用户的独立码本定义为较小维数的非相干单用户码本的图像。我们研究了解码器的可用选项，包括在没有参考符号的情况下的线性均衡，以及联合多用户解码。特别是，我们提出贪婪解码器，它利用编码器映射的结构来分离不同用户的信号，去噪，并像单用户情况下一样解码每个信号。数值结果表明，该方案优于时分多址和基于导频的相干方法。
In this paper, we introduce a multiple access scheme for non-coherent single-input multiple-output (SIMO) communications. We first define an individual codebook for each user as the image of a non-coherent single-user codebook of smaller dimension through a bijective mapping. We investigate the available options at the decoder, including linear equalization in the absence of reference symbols, and joint multi-user decoding. In particular, we propose greedy decoders that exploit the structure of the encoder mappings to separate the signals of different users, denoise, and decode each signal as in the single-user case. Numerical results show that our scheme outperforms the time-division multiple access and the pilot-based coherent approach.