Two-Way decode and forward relaying for OFDMA mobile systems

2017 Advances in Wireless and Optical Communications (RTUWO) Pub Date : 2017-11-01 DOI:10.1109/RTUWO.2017.8228514

Nora Farouk, Wassim Alexan, A. El-Mahdy

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引用次数: 2

Abstract

Wireless communication has been rapidly developed in recent years acquiring higher demand of efficient wireless systems. Cooperative communication is considered to be capable of effectively meeting this rapid growth where the use of relays improves the throughput and ensures successful transmission to all terminals in a given system. In this paper, a Two-way Decode and Forward Relaying for orthogonal frequency division multiple access (OFDMA) mobile systems (TWR-DF-oFdMA) is proposed. The system consists of mobile terminals (MTs) divided into near nodes and far nodes in which the base station directly transmits to the near nodes and indirectly transmits to the far nodes by the cooperation of the near nodes which act as relays. The performance of the system is measured in terms of the bit error rate and the sum rate. It is found that the performance of TWR-DF-OFDMA is much better than that of conventional OFDMA. Furthermore, it is shown that the number of NNs in the system affects the performance of TWR-DF-OFDMA and an optimum number was found to give the highest performance of TWR-DF-OFDMA compared to conventional OFDMA.

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OFDMA移动系统的双向解码和转发中继

近年来，无线通信飞速发展，对高效的无线通信系统提出了更高的要求。协作通信被认为能够有效地满足这种快速增长，其中中继的使用提高了吞吐量并确保成功传输到给定系统中的所有终端。本文提出了一种用于正交频分多址(OFDMA)移动系统(TWR-DF-oFdMA)的双向解码和转发中继。该系统由移动终端组成，移动终端分为近节点和远节点，其中基站直接向近节点发送数据，近节点作为中继，通过近节点的合作间接向远节点发送数据。系统的性能是通过误码率和和率来衡量的。结果表明，TWR-DF-OFDMA的性能明显优于传统的OFDMA。此外，研究表明，系统中网络的数量会影响TWR-DF-OFDMA的性能，并找到了与传统OFDMA相比，能使TWR-DF-OFDMA性能最高的最佳网络数量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2017 Advances in Wireless and Optical Communications (RTUWO)

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