Title :
Differentially en/decoded orthogonal space-time block codes with APSK signals
Author_Institution :
Dept. of Electr. & Comput. Eng., Delaware Univ., Newark, DE, USA
fDate :
4/1/2002 12:00:00 AM
Abstract :
In this letter, we propose a differential en/decoding scheme for Alamouti´s orthogonal space-time code using amplitude/phase-shift keying (STC-APSK) signals and two transmit antennas. It is compared with the differential en/decoding scheme using 16APSK and single transmit antenna. It is also compared with the differential en/decoding scheme for Alamouti´s orthogonal space-time code using 16PSK (STC-16PSK) signals and two transmit antennas. We find that the performance of the differentially en/decoded STC-APSK with 4.5 b/s/Hz is significantly better than that of the differentially en/decoded 16APSK with 4 b/s/Hz, and is almost the same as that of the STC-16PSK with 4 b/s/Hz over Rayleigh flat fading channels.
Keywords :
Rayleigh channels; amplitude shift keying; block codes; decoding; phase shift keying; 16-APSK; 16-PSK; Alamouti´s code; Rayleigh flat fading channels; STC-APSK; amplitude/phase-shift keying; block codes; differential decoding; differential encoding; orthogonal space-time code; transmit antennas; Bandwidth; Block codes; Decoding; Fading; Phase shift keying; Rayleigh channels; Resists; Signal processing; Transmitting antennas; Wireless communication;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.996040
