Joint Relay Assignment and Power Allocation in Multi-Pairs Multi-Relays Two-Way Decode-and-Forward Network

Sijia Lou; Longxiang Yang

doi:10.3969/j.issn.1000-0801.2014.01.008

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Joint Relay Assignment and Power Allocation in Multi-Pairs Multi-Relays Two-Way Decode-and-Forward Network

Research and development | 更新时间：2024-06-05

- Joint Relay Assignment and Power Allocation in Multi-Pairs Multi-Relays Two-Way Decode-and-Forward Network
- Telecommunications Science Vol. 30, Issue 1, Pages: 50-56(2014)
- 作者机构：
  
  1. 南京邮电大学南京210003
  2. 江苏省无线通信重点实验室南京210003 451191
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1000-0801.2014.01.008
  CLC：
- Published Online：2014-01，
  
  Published：20 January 2014
- 稿件说明：
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Sijia Lou, Longxiang Yang. Joint Relay Assignment and Power Allocation in Multi-Pairs Multi-Relays Two-Way Decode-and-Forward Network[J]. Telecommunications science, 2014, 30(1): 50-56.
DOI：

Sijia Lou, Longxiang Yang. Joint Relay Assignment and Power Allocation in Multi-Pairs Multi-Relays Two-Way Decode-and-Forward Network[J]. Telecommunications science, 2014, 30(1): 50-56. DOI： 10.3969/j.issn.1000-0801.2014.01.008.

摘要

针对多用户对多中继双向通信系统，提出了一种中继选择与功率分配联合算法，目的是改进系统的误码率性能和降低系统的运算复杂度。所提出的新型联合算法为每对用户节点选择出最佳中继，最佳中继将接收到的信息进行网络编码后向所有节点广播，联合算法也对每个节点的发送功率进行分配。建立了新型联合算法下系统的误码率闭合表达式，并验证了解析分析的正确性。结果表明，与传统的等功率发送算法相比，本文的联合算法可以获得更好的误码率性能。

Abstract

A joint power allocation and relay assignment algorithm for multi-pairs multi-relays two-way cooperative networks to improve system performance and decrease computation complexity was proposed. The proposed algorithm select best relays for each pair

then the selected relays use network coding to assist users exchanging signals. Meanwhile

this algorithm allocates power between all nodes participated in transmission under the total transmit power constraint.The expressions of bit error rate（BER）were derived in closed-form

and were verified by simulation. Numerical result shows that it has a performance improvement compared to the conventional equal power allocation scheme.

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references

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