分布式空频码自适应联合编译码方案性能研究  

Research on Adaptive Coding and Decoding Scheme on Distributed Space-frequency Coding

作　　者：刘伟[1] 李宇[1] 

机构地区：[1]河南科技大学电子信息工程学院,河南洛阳471023

出　　处：《电视技术》2014年第3期124-126,共3页Video Engineering

基　　金：国家自然科学基金项目(61101167)

摘　　要：针对分布式线性分散码空频编码系统,提出了一种新的自适应编码和译码联合的方案。中继节点根据信道状况自适应选择分散矩阵和调制方式,接收端根据设定的信道条件数阈值自适应选择译码算法,并在COST207典型城市信道模型下进行了MATLAB仿真。仿真结果表明文中所提算法能够有效改善系统的性能。A new adaptive coding and decoding scheme is proposed for distributed space-frequency coding system. Each relay node selects dispersion matrix and modulation type adaptively according to channel state and different detection methods are used according to the threshold of channel condition nund^er adaptively. The MATLAB simulation is performed under COST207 typical urban channel model. Simulation results show that the proposed adap- tive coding scheme gives a more good performance.

关 键 词：协作通信 分布式线性分散码 空频编码 条件数 自适应 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]