独占加共享的频谱划分模式与高效传输体制

项目名称： 独占加共享的频谱划分模式与高效传输体制

项目编号： No.61271204

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： 吴乐南

作者单位： 东南大学

项目金额： 80万元

中文摘要： 有限的频谱资源制约了国家的可持续发展，而基于经典矩形频谱划分的信道容量和单位频谱利用率极限，已不能解释一些高效调制方法的优异性能。探索容量更大的新的非矩形频谱划分模式并导出相应的信道容量和单位频谱利用率极限，既是国家的重大战略需求，也是信息科学和通信技术发展有待解决的关键科学问题。本项目将针对超窄带调制类似正弦波的信号特征，探索超窄频谱树独占加较宽频谱草共享的非矩形频谱划分模式，导出相应的非香农信道容量，发展在同等误码率、净码率和信道条件下bps/Hz/SNR综合效率至少20倍于现有物理层技术的密集多载波大容量信号传输体制，并面向复杂信道或弱链路的可靠传输问题，尝试建立时-频-码-空多维复用宽带无线传输的理论框架和多维联合优化设计方法，利用软件定义的无线电平台进行系统实现与验证。为解决国家发展所面临的重大频谱需求提供理论依据和技术支撑，确保今后20年我国在频谱利用率方面的国际领先性。

中文关键词： 调制/解调；综合效率；多载波；超奈奎斯特速率通信；深度学习

英文摘要： The limited spectrum resouce has restricted the continuing development of our nation, while the channel capacity and the limit of unit spectrum utilization based on classical rectangular frequency partition, can not explain the excellent performance of some efficient modulations already. It will be both the great national tactic request but the key scientific problem to be solved in development of information science and communication technology, to explore the novel non-rectangular frequency partition pattern which is larger in capacity and deduce the corresponding channel capacity and the limit of unit spectrum utilization. This project will aim at the sine-like signal characteristic of the ultra narrow band (UNB) modulations, search the non-rectangular frequency partition pattern with a monopolized ultra narrow frequency tree plus shared broad frequency grass, infer corresponding non-Shannon channel capasity, and develop a signal transmission scheme of dense multi-carrier and large capacity whose synthetical efficiency in bps/Hz/SNR will be at least the 20 times of the current physic layer technology under the same bit error rate, net code rate, and channel environment.And faced to the problem of reliable transmission over complex channel or weak link, a theoretic framework for broadband wireless transmission

英文关键词： MODEM；Synthetical Efficiency；Multi carriers；FTN Communications；Deep Learning