›› 2011, Vol. 24 ›› Issue (9): 101-.

• 论文 • 上一篇    下一篇

空时编码在OFDM系统中的应用

张伟岗,尚宇   

  1. (西安工业大学 电子信息工程学院,陕西 西安 710032)
  • 出版日期:2011-09-15 发布日期:2011-10-24
  • 作者简介:张伟岗(1987—),男,硕士研究生。研究方向:通信与信息系统。尚宇(1973—),女,副教授。研究方向:信号处理。

The Application of Space-Time Coding in OFDM System

 ZHANG Wei-Gang, SHANG Yu   

  1. (School of Electronics and Information Engineering,Xi'an Technological University,Xi'an 710032,China)
  • Online:2011-09-15 Published:2011-10-24

摘要:

研究了空时分层码(LSTC)、空时分组码(STBC)和空时网格码(STTC)3种典型的空时编码技术。讨论了各自的编码原理和译码原理。以空时分组码为重点,介绍了OFDM系统的基本原理,将空时分组码和OFDM技术相结合,对STBC-OFDM系统的基本模型加以探讨,理论分析系统接收端的信噪比性能,通过Matlab仿真对收发端天线数目不同时系统的误码率性能进行比较,验证STBC-OFDM系统的可靠性。

关键词: 空时编码, 正交频分复用, 空时分组码, MIMO

Abstract:

This paper studies the three typical space-time coding technology: the space-time layered code (LSTC),space-time block codes (STBC),and the space-time grid code (STTC);and discusses their coding and decoding principle.With emphasis on space-time block code,the OFDM systems are introduced in detail.The basic principle of the space-time block codes and OFDM technology combining STBC-OFDM system of basic model are discussed.A theoretical analysis is made of the receiver SNR performance,and a comparison is made through MATLAB simulation of ber performance with different numbers of antenna.The reliability of the STBC-OFDM system is validated.

Key words: space-time coding;OFDM;space-time block codes;MIMO

中图分类号: 

  • TN919.3+2