Title :
Effect of imperfect channel information on M-QAM SER performance of orthogonal space-time block codes
Author :
Ko, Eunseok ; Kang, Changeon ; Hong, Daesik
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
The effect of imperfect channel information on the performance of orthogonal space-time block codes is considered in this paper. The symbol error rate of the M-QAM constellation of an orthogonal space-time block code is derived taking into account the effect of imperfect channel information in a Rayleigh fading channel. Derived results show that imperfect channel information destroys the orthogonality of OSTBC, resulting in an error floor that increases with the channel estimation and the normalized Doppler frequency.
Keywords :
Rayleigh channels; block codes; channel estimation; diversity reception; error statistics; quadrature amplitude modulation; space-time codes; M-QAM; Rayleigh fading channel; channel estimation error; error floor; imperfect channel information; normalized Doppler frequency; orthogonal space-time block codes; quadrature amplitude modulation; symbol error rate; Block codes; Channel estimation; Diversity reception; Fading; Frequency estimation; Interference; Maximum likelihood decoding; Niobium; Receiving antennas; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207638
