高速率传输通信系统中的多用户地址码设计方法研究

项目名称： 高速率传输通信系统中的多用户地址码设计方法研究

项目编号： No.61271003

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 曾凡鑫

作者单位： 中国人民解放军重庆通信学院

项目金额： 77万元

中文摘要： 高速率传输通信系统是实现移动通信多媒体服务的重要支撑平台，而现在已知的高速率传输通信系统模型都以序列为地址码实现多址接入，并且地址码还对系统起扩频作用。扩频码的非正交性是导致通信系统产生多址干扰的根源，严重地制约了通信系统的传输速率、系统容量和频谱利用率。通过序列设计并结合适当的通信系统模型，能从根本上彻底消除多址干扰。QAM星座上的序列具有高的数据比特传输率，并能像其他星座上的序列一样设计无多址干扰的QAM序列，因此，QAM序列对移动通信更具有潜在的重要应用价值。但是，QAM序列的相关研究方法和研究成果非常少，远不能满足应用的需求。本项目将重点研究构建QAM互补序列的产生模型、构建Z互补QAM序列的产生模型、QAM ZCZ序列的产生模型和最佳相关性能QAM序列的构造模型，并辅以研究四相序列及其它序列的构建模型。同时，也将研究适合于QAM序列的新的通信系统模型。

中文关键词： 序列设计；QAM星座；多址接入；扩频通信；MIMO通信

英文摘要： In oder to implement multi-medium service in mobile communications, it is essential to employ comuunication systems with high trassimision data rate (TDR). In the existing such systems, their mutiple users are accessible by address codes constructed by sequences. Besides, another function of sequences is to implement spread spectrum to such systems. However, there exist multiple access interference (MAI) in such systems due to non-orthogonality between sequences, which heavily reduces TDR, capacity, and spectrum rate of systems. By a combination of sequence design and appropriate communication system model, the MAI can be removed fully. Sequences over the QAM constellation can result in high TDR and remove the MAI. As a consequences, QAM sequences have potential applications to mobile communications. Unfortunately, the relevant investigation methods and results on QAM sequences are too few, which do not meet the present requirements. This project will focus on constructions of QAM complementary, Z-complementay, and ZCZ sequences, including constructions of QAM sequences with the best correlation property, and quadriphase and other sequences. At the same time, new commnuication systems that are fit for QAM sequences will be investigated as well.

英文关键词： sequence design；QAM constellation；multiple address access；spread-spectrum communication；MIMO communication