J4 ›› 2012, Vol. 39 ›› Issue (4): 172-177.doi: 10.3969/j.issn.1001-2400.2012.04.031

• Original Articles • Previous Articles     Next Articles

Novel design for the quasi orthogonal space-time block code

MA Tianming;LI Fengrong;SHI Yusong;WANG Yingguan   

  1. (Key Lab. of Wireless Sensor Network & Commun., Shanghai Inst. of Microsystem and Info. Tech.,  Chinese Academy of Sci., Shanghai  200050, China)
  • Received:2011-10-15 Online:2012-08-20 Published:2012-10-08
  • Contact: MA Tianming E-mail:xdsjtxw@163.com

Abstract:

A quasi orthogonal space-time block code scheme is proposed and simulated by MATLAB based on the analysis and study of the current Quasi Orthogonal Space-Time Block Codes. The scheme uses the improved Alamouti Code as its basic unit to design a Quasi Orthogonal Space-Time Block Code matrix with four transmit antennas, using the method of matrix diagonalization to remove the redundant sparse matrix and reduce the decoding complexity. Final simulation results show that, compared with the Jafarkhani Quasi Orthogonal Space-Time Block Code, this scheme can not only be linearly decoded at the receiver, but also further improve the channel capacity and the Bit Error Rate.

Key words: multiple input multiple output, space-time code, quasi orthogonal space-time block code, Alamouti code

CLC Number: 

  • TN911.22