Title :
An extended space-time transmit diversity scheme for frequency selective fading channels
Author :
Alkhawaldeh, S.A. ; Shayan, Yousef R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
This paper presents a transmit diversity scheme for frequency selective fading channels. The proposed scheme uses a space-time block code (ST-BC) with three transmit antennas combined with orthogonal frequency division multiplexing (OFDM). This scheme provides a diversity order as the maximal-ratio receiver combining (MRRC) scheme. It achieves diversity of 3n for n receive antennas and has code rate of 3/4. A maximum-likelihood detector with linear processing is used which results in low computational complexity. Simulation results are provided to show the comparison between the proposed scheme and MRRC.
Keywords :
OFDM modulation; antenna arrays; block codes; diversity reception; fading channels; maximum likelihood detection; receiving antennas; space-time codes; transmitting antennas; OFDM; extended space-time transmit diversity scheme; frequency selective fading channels; linear processing; maximal-ratio receiver combining scheme; maximum-likelihood detector; orthogonal frequency division multiplexing; receive antennas; space-time block code; transmit antennas; Block codes; Computational complexity; Detectors; Diversity reception; Fading; Frequency diversity; Maximum likelihood detection; OFDM; Receiving antennas; Transmitting antennas;
Conference_Titel :
Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on
Print_ISBN :
0-7803-7781-8
DOI :
10.1109/CCECE.2003.1226228
