A Differential Modulation Scheme for MIMO Links with Distributed Transmit Antennas

Author

Sun, Defu ; Tang, Youxi ; Shao, Shihai

Author_Institution

Univ. of Electron. Sci. & Technol. of China, Chengdu

Volume

11

Issue

11

fYear

2007

fDate

11/1/2007 12:00:00 AM

Firstpage

892

Lastpage

894

Abstract

This letter proposes a differential en/decoding scheme for multiple-input multiple-output (MIMO) communication links with distributed transmit antennas, in which neither the transmitter nor the receiver knows channel knowledge. The proposed scheme is based on the layered differential space-time codes we present. Simulation results show that the bit error rate (BER) performance is nonidentical in different channel propagation delay cases. The optimum delay time for two transmit antennas system, for example, is about 0.6T_s (where T_s denotes symbol period) when the links achieve better performance.

Keywords

MIMO communication; delays; error statistics; space-time codes; telecommunication links; MIMO communication links; bit error rate; channel propagation delay; differenctal decoding; differential encoding; differential modulation scheme; distributed transmit antennas; layered differential space-time codes; Antennas and propagation; Bit error rate; Decoding; Delay effects; MIMO; Propagation delay; Receiving antennas; Space time codes; Transmitters; Transmitting antennas;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2007.071189

Filename

4381379