Differential modulation based on quasi-orthogonal codes

被引：3
|
作者：
Zhu, Y [1 ]
Jafarkhani, H [1 ]
机构：
[1] Univ Calif Irvine, Dept Elect Engn & Comp Sci, Ctr Pervas Commun & Comp, Irvine, CA 92697 USA
来源：
2004 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE, VOLS 1-4: BROADBAND WIRELESS - THE TIME IS NOW | 2004年
关键词：
D O I：
10.1109/WCNC.2004.1311601
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this paper, we propose a differential modulation scheme based on quasi-orthogonal space-time block codes when neither the transmitter nor the receiver has the knowledge of the channel. We consider a system with four transmit antennas and divide it into two subsystems. Each subsystem contains two transmit antennas and uses a differential space-time block code modulation. Based on the encoding and decoding for the two subsystems, we derive the overall encoding and decoding algorithm for the original system. Compared with the existing differential modulation schemes for four transmit antennas, our scheme has lower bit error rate and provides pair-wise decoding complexity.
引用
收藏
页码：531 / 536
页数：6
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