一种基于块结构广义多载波的无干扰重叠传输机制  

A Block-Wise-Generalized Multi-Carrier Based Interference-Free Superposition Transmission Scheme

作　　者：贠超[1] 李明齐[1] 易辉跃[1,2] 刘广宇[1] 杨曾[1] 卜智勇[1] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050 [2]上海无线通信研究中心,上海200050

出　　处：《上海交通大学学报》2009年第7期1113-1116,共4页Journal of Shanghai Jiaotong University

基　　金：国家高技术研究发展计划(863)项目(2006+AA01Z280)

摘　　要：提出了一种能够有效提高快结构广义多载波(BW-GMC)系统效率的传输机制.利用BW-GMC系统中原型滤波器的对称性,在发射端构造包含原信号和叠加信号的重叠传输信号,在接收端提出了相应检测方案,以实现原信号和叠加信号的无干扰分离.理论分析结果表明,与传统系统相比,采用无干扰重叠传输机制的BW-GMC系统能有效提高传输效率,并且传输效率增益取决于信噪比以及BW-GMC中的逆滤波器组变换符号个数.仿真结果进一步验证了该传输机制的无干扰特性.A transmission scheme was proposed which can be used to improve the efficiency of block-wise- generalized multi-carrier （BW-GMC） system. Utilizing prototype filter symmetry of BW-GMC systems, superposition signals composed of original signals and superposed signals are designed at the transmitter.In addition, a corresponding detection method was also proposed for the receiver to achieve interferencefree separation of original and superposed signals. The theoretical analysis shows that the BW-GMC systems with interference-free superposition transmission scheme outperform the conventional ones in terms of spectral efficiency. Furthermore, the spectral efficiency is affected by the signal-to-noise ratios and the number of inverse filter-bank transform symbols of BW-GMC systems. The simulation results further verify the interference-free nature of the proposed superposition transmission scheme.

关 键 词：块结构广义多载波 重叠传输 滤波器组 

分 类 号：TN911.3[电子电信—通信与信息系统]