| 基于EXIT图的IDMA系统性能分析 |
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| 引用本文： | 刘俊霞,魏琴芳.基于EXIT图的IDMA系统性能分析[J].重庆邮电学院学报(自然科学版),2009(1). |
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| 作者姓名： | 刘俊霞 魏琴芳 |
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| 作者单位： | 重庆邮电大学编码技术研究所; |
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| 基金项目： | 重庆市科委自然科学基金(CSTC,2007BB2387) |
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| 摘 要： | 交织分多址接入(IDMA)技术是第四代移动通信的关键技术之一。IDMA系统采用一个简单的逐码片的迭代多用户检测接收结构,利用交织器来区分用户。用外信息传输(EXIT)图分析IDMA系统在不同的系统参数下的性能,如用户数、扩频长度、信道的信噪比。仿真结果证明,EXIT图技术能准确地分析IDMA系统的性能。
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| 关 键 词： | 交织多址接入系统 多用户检测 互信息 EXIT图 |
Capability analysis of interleave-division multiple-access system based on EXIT chart |
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| LIU Jun-xia,WEI Qin-fang.Capability analysis of interleave-division multiple-access system based on EXIT chart[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2009(1). |
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| Authors: | LIU Jun-xia WEI Qin-fang |
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| Institution: | Institute of Coding and Information Technology;Chongqing University of Posts and Telecommunications;Chongqing 400065;P.R.China |
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| Abstract: | IDMA is one of key technologies in the fourth generation of mobile telecommunication.The users of IDMA system were distinguished by unique individual interleavers.IDMA system adopts a simple system model as novel iterative chip-by-chip receiver.The IDMA system was analyzed using extrinsic information transfer(EXIT)charts with different parameters,such as the numbers of users,spread length,signal-to-noise of channel,and so on.Simulation result shows that the EXIT chart is an effective method to analyze the I... |
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| Keywords: | interleave-division multiple-access system multi-user detection mutual information EXIT chart |
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