| 交织多址单步随机接入 |
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| 引用本文： | 别志松,王伶,吴伟陵.交织多址单步随机接入[J].北京邮电大学学报,2007,30(5):63-66. |
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| 作者姓名： | 别志松 王伶 吴伟陵 |
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| 作者单位： | 北京邮电大学,信息工程学院,北京,100876;西门子(中国)公司研究院,无线通信部 |
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| 摘 要： | 为了减小随机接入时延并降低碰撞概率，提出采用交织多址作为单步随机接入资源请求数据部分的多址接入方式，通过在数据段加入若干附加比特扩大了可用随机标识的数量，并设计了一种异步接收机结构用于数据部分的多用户检测，分析和仿真结果表明所提出的方法能够大大降低碰撞概率．
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| 关 键 词： | 随机接入信道 交织多址 异步接收机 碰撞概率 |
| 文章编号： | 1007-5321（2007）05-0063-04 |
| 收稿时间： | 2006-10-28 |
| 修稿时间： | 2006-10-26 |
IDMA-based One-step Random Access |
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| BIE Zhi-song,WANG Ling,WU Wei-ling.IDMA-based One-step Random Access[J].Journal of Beijing University of Posts and Telecommunications,2007,30(5):63-66. |
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| Authors: | BIE Zhi-song WANG Ling WU Wei-ling |
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| Affiliation: | 1, School of Information Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2, Siemens Ltd., China, Corporate Technology, Radio Technology and Solution, Beijing 100102, China |
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| Abstract: | In order to decrease the random access latency and to lower the collision probability, an interleave division multiple access scheme is adopted as the multiple access scheme of resource request data part of the one-step random access scheme. The number of available random identifier will be enlarged when inserting several additional bits into the data part. An asynchronous IDMA receiver is designed for multi-user detection of the data part. Analysis and simulation results show that the collision probability can be lowered dramatically by using the proposed scheme. |
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| Keywords: | random access channel interleave division multiple access asynchronous receiver collision probability |
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