有限字符集调制下的框架数字传输设计与分析

项目名称： 有限字符集调制下的框架数字传输设计与分析

项目编号： No.61471218

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 韩芳明

作者单位： 清华大学

项目金额： 83万元

中文摘要： 随着社会与经济的发展和信息化程度的不断提高，人们对无线与移动数据传输业务的需求也日益增加。据预测，到2020年全球移动和无线数据传输业务将比2010年增长超过1000倍。同时，低碳/绿色通信概念的提出和发展趋势也促使我们在大力提升通信能力的同时，还必须进一步降低通信能耗。为适用未来无线数字通信发展的需要，本项目对我们之前提出的具有高频谱效率的框架数字传输系统中的若干关键问题展开进一步研究，包括有限字符集调制下框架数字传输系统的容量分析和误码率性能分析、不同准则下最佳框架波形的构建以及高性能低复杂度信息字符恢复算法的研究等。期望通过本项目的研究，可以进一步深化并拓展基于框架的数字传输理论，为解决无线传输中由频谱资源稀缺与低能耗等物理层挑战提供一条有效途径，并为下一代无线传输技术的发展奠定必要的理论基础。

中文关键词： 通信信号处理；框架数字传输；有限字符集；超Nyquist信令

英文摘要： With the rapid development of society and economy and the advancement of informatization, increasing demand for wireless and mobile transmission service is witnessed. It is predicted that the global wireless and mobile transmission sevices in 2020 would increase over 1000-fold than those in 2010. At the same time, the concept and trend of low-carbon/green communications urge us to further lower the energy consume when we are going to greatly improve the communication capability. To accommodate the requirements of future wireless digital communications, the current project studies some key issues in the frame digital transmission system that was earlier proposed by us with high spectral efficiency, namely, the analysis of channel capacity and bit error rate of frame digital transmission systems modulated by finite alphabets, the construction of optimum frame waveforms under various criteria, and the algorithms for recovering information symbols with high performance and low complexity, etc. It is expected that the project can further refine and strengthen the theory of frame digital transmission, providing an effective solution to the challenge from spectrum scarcity and high energy consume, and laying the foundation for the development of next generation wireless transmission technologies.

英文关键词： Communication signal processing;Frame digital transmission;Finite alphabet;Faster-than-Nyquist signaling