基于Hybrid-STBC-VBLAST的中继辅助多输入多输出多址信道无线通信系统

2017 26th Wireless and Optical Communication Conference (WOCC) Pub Date : 2017-04-01 DOI:10.1109/WOCC.2017.7929011

M. Kamruzzaman

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引用次数: 5

摘要

提出了一种基于Hybrid-STBC-VBLAST的多址中继辅助系统。该系统使用空时块编码(STBC)对多用户手持设备上的信息进行编码;在中继上使用Hybrid-STBC-VBLAST进行解码和重新编码;并在目的地使用最大似然(ML)进行解码。对中继4 ~ 8个发射天线、中继和目的端4 ~ 8个接收天线的结果进行了评价，结果表明，通过本文介绍的简单编码技术，可以增加发射天线和接收天线的数量，从而获得海量天线的优势。仿真结果显示了系统的误码率性能。将Hybrid-STBC-VBLAST的误码性能与采用STBC和VBLAST的中继辅助MAC进行了比较。结果表明，Hybrid-STBC-VBLAST的BER性能非常接近STBC的性能，但在中继辅助MAC方面优于VBLAST。在有中继和没有中继的情况下，也对所提出的系统的性能进行了评估，结果表明，与直接链路系统相比，所提出的系统在10−6时提供了11-17 dB的增益。

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Relay assisted Multiple Input Multiple Output wireless communication system for Multiple Access Channel using Hybrid-STBC-VBLAST

A relay assisted system using Hybrid-STBC-VBLAST for Multiple Access Channel (MAC) is proposed in this paper. The proposed system encodes information at handsets of multiple users using Space Time Block Coding (STBC); decodes and re-encodes using Hybrid-STBC-VBLAST at relay; and decodes using Maximum-likelihood (ML) at destination. The results are evaluated for 4 to 8 transmit antennas of relay and 4 to 8 receive antennas of relay and destination, and it is shown in this paper that it is possible to increase number of transmit and receive antennas to get advantages of massive antennas with simple encoding techniques explained in this paper. Simulation results are presented to show the BER performance of the system. The BER performance of Hybrid-STBC-VBLAST is compared with relay assisted MAC using STBC and VBLAST. It is shown that the BER performance of Hybrid-STBC-VBLAST is very close to the performance of STBC but it outperforms VBLAST for relay assisted MAC. The performance of the proposed system is also evaluated with and without relay, and it is shown that proposed system provides 11–17 dB gain compared to a direct link system at 10−6.

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2017 26th Wireless and Optical Communication Conference (WOCC)

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