Title :
Error performance analysis of STBC-OFDM systems with parameter imbalances
Author :
Song, Hyoung-Kyu ; Kang, Sung-Jin ; Kim, Mi-Jeong ; You, Young-Hwan
Author_Institution :
Dept. of Inf. & Commun. Eng., Sejong Univ., South Korea
fDate :
3/1/2004 12:00:00 AM
Abstract :
In this paper, the effect of an imperfect channel estimation and carrier frequency offset on the performance of a space-time block coded (STBC) OFDM system is investigated. For the performance evaluation, the average bit error rate (BER) expression is derived in the presence of the imperfect channel information including both the inherent estimation error and the imperfect windowing error derived in a mismatched channel separation. From presented results, the inherent channel estimation error is a dominating term in the system performance, compared to other parameter imperfections.
Keywords :
OFDM modulation; block codes; channel estimation; error analysis; error statistics; space-time codes; BER expression; STBC-OFDM system; bit error rate; carrier frequency offset; channel estimation error; error performance analysis; imperfect channel information; imperfect windowing error; mismatched channel separation; parameter imbalance; performance evaluation; space-time block code-OFDM system; Additive noise; Bit error rate; Channel estimation; Estimation error; Frequency estimation; MIMO; OFDM; Performance analysis; Receiving antennas; Transmitting antennas;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2003.822986
