| 闭环CL-MRC跨层交互系统的性能分析 |
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| 引用本文： | 郭丽丽,王瑞春,何国荣.闭环CL-MRC跨层交互系统的性能分析[J].深圳信息职业技术学院学报,2010,8(4):40-45. |
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| 作者姓名： | 郭丽丽 王瑞春 何国荣 |
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| 作者单位： | 深圳信息职业技术学院电子通信技术系,广东深圳518029 |
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| 摘 要： | 为增强无线网络的性能,提出了一种闭环CL-MRC跨层交互方案（Closed Loop-Maximal Ratio Combining cross layer scheme）。该方案是跨物理层和数据链路层两层,利用自适应调制技术和自动重传技术的交互协作,使发射端利用反馈信息自适应选择调制模式和发射权矢量,并自动重传发射数据,以达到性能增强的目的。推导了该闭环CL-MRC系统的频谱效率和中断概率的闭合表达式,同时,对比单发/单收（SISO）和开环MIMO跨层系统,闭环CL-MRC系统的性能有明显提高。
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| 关 键 词： | 跨层设计 自适应调制 自动重传 闭环 |
Performance analysis of closed-loop CL-MRC cross-layer scheme |
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| GUO Lili,WANG Ruichun,HE Guorong.Performance analysis of closed-loop CL-MRC cross-layer scheme[J].Journal of Shenzhen Institute of Information Technology,2010,8(4):40-45. |
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| Authors: | GUO Lili WANG Ruichun HE Guorong |
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| Institution: | (Department of Electronic Communication,Shenzhen Institute of Information Technology, Shenzhen 518029,P.R.China) |
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| Abstract: | Closed Loop-Maximal Ratio Combining cross layer scheme（CL-MRC） was proposed to improve wireless communication network＇s performance.The scheme combines physical layer and data link layer,and makes adaptive modulation and automatic repeat request interaction.By utilizing feedback information from the receiver,the transmitter chose the modulation mode and optimal transmitter beam-steering vector adaptively,and retransmitted data automatically,so to enhance the system performance.This paper presents close-form expressions of the CL-MRC system for spectral efficiencies and the probability of outage,and makes the comparisons with the SISO cross-layer system and open loop MIMO cross-layer system.The performance of the CL-MRC system is observably enhanced. |
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| Keywords: | cross-layer design adaptive modulation（AM） automatic repeat request（ARQ） closed-loop |
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