Effect of channel estimation errors and feedback delay on the performance of closed-loop transmit diversity system

We analyze the performance of closed-loop transmit diversity systems in the presence of feedback delay and channel estimation error in Rayleigh time-selective flat fading. We formulate both the feedback delay and the channel estimation error as a function of Doppler spread, and derive the average bi...

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Bibliographic Details
Published in2003 IEEE 4th Workshop on Signal Processing Advances in Wireless Communications pp. 542 - 545
Main Authors Nam-Soo Kim, Ye Hoon Lee
Format Conference Proceeding
LanguageEnglish
Published IEEE 2003
Subjects
Bit error rate
Channel estimation
Computer errors
Delay effects
Delay estimation
Estimation error
Fading
Feedback
Frequency estimation
Performance analysis
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ISBN9780780378582
078037858X
DOI10.1109/SPAWC.2003.1319019

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Summary:We analyze the performance of closed-loop transmit diversity systems in the presence of feedback delay and channel estimation error in Rayleigh time-selective flat fading. We formulate both the feedback delay and the channel estimation error as a function of Doppler spread, and derive the average bit error probability under such imperfect channel information. It is shown that the channel estimation error is more sensitive to system performance than feedback delay in slow fading environments.
ISBN:9780780378582
078037858X
DOI:10.1109/SPAWC.2003.1319019