| 改进的空时协作分集方案及性能分析 |
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| 引用本文： | 张南,葛建华,熊雄,何洪文. 改进的空时协作分集方案及性能分析[J]. 吉林大学学报(工学版), 2010, 40(4) |
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| 作者姓名： | 张南 葛建华 熊雄 何洪文 |
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| 作者单位： | 1. 西安电子科技大学,综合业务网理论及关键技术国家重点实验室,西安,710071
2. 第二炮兵驻孝感地区军事代表室,湖北,孝感,432100 |
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| 基金项目： | "883"国家高技术研究发展计划项目，高等学校学科创新引智计划项目 |
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| 摘 要： | 针对现有基于分布式空时码的放大转发协作协议(AF-DSTC)频谱效率较低的问题,提出了一种新的基于分布式空时码的高效选择性放大转发协作协议(SAF-DSTC)。该方案将协作过程从原来的4个时隙缩短至3个时隙,频谱效率提高了33.3%。理论分析及仿真结果表明:在保持相同频谱效率的情况下,SAF-DSTC在各方面都优于AF-DSTC,系统所耗功率、中断概率和误比特率都大大降低。
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| 关 键 词： | 通信技术 协作分集 中断概率 选择性放大转发 分布式空时码 |
Improved cooperative scheme based on space-time code and performance analysis |
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| ZHANG Nan,GE Jian-hua,XIONG Xiong,He Hong-wen. Improved cooperative scheme based on space-time code and performance analysis[J]. Journal of Jilin University:Eng and Technol Ed, 2010, 40(4) |
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| Authors: | ZHANG Nan GE Jian-hua XIONG Xiong He Hong-wen |
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| Abstract: | To improve the spectral efficiency of current Amplify-and-Forward protocol based on the Distributed Space-Time Code ( AF-DSTC) ,we proposed an improved Selection Amplify-and-Forward protocol based on the Distributed Space-Time Code ( SAF-DSTC) . This improved protocol shortens the cooperative period from four time slots to three slots,that saves 33. 3% of the symbol transmission bandwidth. Theoretical analysis and simulation results show that,at the same spectral efficiency,the proposed SAF-DSTC protocol significantly outperforms the AF-DSTC protocol in terms of the consumed power,outage probability and bit error rate. |
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| Keywords: | communication cooperative diversity outage probability selection amplify-and-forward ( SAF) distributed space-time code |
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