一种新的QO-GLSFTBC-OFDM技术  

A Novel QO-GLSFTBC-OFDM Technique

作　　者：战金龙[1] 廖桂生[1] 李国民[1] 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071

出　　处：《电子学报》2007年第12期2435-2440,共6页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60172028);高等学校博士点专项基金(No.20010701008)

摘　　要：提出了一种可以使QOSTBC(Quasi-Orthogonal Space-Time Block Code)获得满分集增益的QO-GLSFTBC-OFDM(Group Layered Space-Frequency-Time Block Coded Orthogonal Frequency Division Multiplexing)技术,与基于星座图旋转的改进QOSTBC方法相比,本文提出的方法不扩大每个发射天线发送符号的星座图.从理论分析的结果可以看出,本文所提出的方法在保持QOSTBC满速率优点的前提下,可以同时获得满空间分集增益;而且编码和译码的过程都是基于线性处理的,计算简单.计算机仿真结果也证明了该方法的有效性.A Quasi-Orthogonal Group Layered Space-Frequency-Time Block Coded （QO-GLSFTBC）-OFDM scheme with full-rate and full-diversity is presented for improving the performance of quasi-orthogonal codes. Compared to the constellation-rotated quasi-orthogonal codes （the improved QO scheme）, the newly proposed code has the advantage of not expanding the signal constellation at each transmit antenna. The proposed method can obtain full rate and full diversity. Furthermore, the encoding and decoding process of the proposed method is made of linear processing and requires simple operation. Simulation results show the validity of the proposed method.

关 键 词：准正交设计 分组分层空频时编码 正交频分复用 满分集 满速率 

分 类 号：TN92[电子电信—通信与信息系统] TN911[电子电信—信息与通信工程]