Title :
Block differential space-time modulation with decision-feedback detection in Rayleigh fading
Author :
Du, Zheng ; Beaulieu, Norman C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta.
Abstract :
Time variation on fading channels hinders accurate channel estimation in differential space-time modulation and deteriorates the performance. Decision-feedback differential detection is considered for block differential space-time modulation and compared with conventional differential space-time modulation. It is observed that the proposed scheme does not suffer effective fading bandwidth expansion as does the conventional scheme. An improved effective signal-to-noise ratio approach is proposed for analyzing the performance of the system. Theoretical analysis and simulation show the improved performance of the proposed scheme over the conventional scheme
Keywords :
Rayleigh channels; bandwidth allocation; block codes; channel estimation; modulation; space-time codes; Rayleigh fading; block differential space-time modulation; channel estimation; decision-feedback detection; fading channels; signal-to-noise ratio approach; AWGN; Bandwidth; Channel estimation; Fading; Performance analysis; Rayleigh channels; Receiving antennas; Signal to noise ratio; Transmitters; Transmitting antennas;
Conference_Titel :
Global Telecommunications Conference, 2005. GLOBECOM '05. IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-7803-9414-3
DOI :
10.1109/GLOCOM.2005.1578314
