基于节点选择和功率分配算法的自适应调制协作通信系统

山东大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (1): 7-11.

基于节点选择和功率分配算法的自适应调制协作通信系统

李荣凯^1,2, 白智全¹

1. 山东大学信息科学与工程学院, 山东济南 250100;
2. 西安电子科技大学综合业务网国家重点实验室, 陕西西安 710071

收稿日期:2010-10-28 出版日期:2011-02-16 发布日期:2010-10-28
作者简介:李荣凯(1985- ),男,山东东营人,硕士研究生,主要研究方向为协作通信、MIMO. E-mail:xiaokai.1985@163.com
基金资助:
国家自然科学基金资助项目(61072040);山东省自然科学基金资助项目(ZR2010FQ023);山东大学自主创新基金资助项目(2009TS104);韩国仁荷大学超宽带无线通信研究中心资助项目(NIPA-2010-C1090-1011-0007)

Adaptive modulated cooperative communication based on relay selection and power allocation

LI Rong-kai^1,2, BAI Zhi-quan¹

1. School of Information Science and Engineering, Shandong University, Jinan 250100, China;
2. National Key Lab of ISN, Xidian University, Xi’an 710071, China

Received:2010-10-28 Online:2011-02-16 Published:2010-10-28

摘要/Abstract

摘要：

协作通信技术可以通过利用空间分集来改善系统的性能,特别是当信源节点已经知道信道信息时,可以获得相对于非自适应系统非常大的增益。提出一种基于自适应调制的协作通信方案,此方案结合了空时编码、功率分配和中继选择技术,在满足一定的误码率要求下可以提高系统吞吐量。通过与其它自适应、非自适应方案性能的比较,表明所提出的方案可以在很好地满足误码率要求的前提下,具有非常好的吞吐量性能。

关键词: 协作通信, 自适应调制, 吞吐量

Abstract:

Cooperative communication technology can exploit spatial diversity to improve system performance. In the case that the channel state information is known at the source node, a larger power gain can be obtained. A new scheme of adaptive modulation for a cooperative system was presented. This scheme utilized spacetime coding, a power allocation algorithm and relay selection technique, which significantly improved the system throughput with a certain bit error rate requirement. The performance of the proposed scheme was compared with the other existing adaptive and non-adaptive schemes. The results showed that the proposed adaptive modulation scheme had superior average throughput performance and could stably satisfy the bit error rate constraint.

Key words: cooperative communication, adaptive modulation, throughput

李荣凯1,2, 白智全1. 基于节点选择和功率分配算法的自适应调制协作通信系统[J]. 山东大学学报(工学版), 2011, 41(1): 7-11.

LI Rong-kai1,2, BAI Zhi-quan1. Adaptive modulated cooperative communication based on relay selection and power allocation[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2011, 41(1): 7-11.

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