Impact of imperfect channel knowledge on transmit processing concepts

Frank A. Dietrich, Wolfgang Utschick

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

Common transmit processing concepts are either based on complete, partial, or no channel state information (CSI). But the quality of CSI is crucial for a fair comparison. Therefore, we derive an explicit expression of the bit error probability (binary modulation) for the transmit matched filter, beamforming, and Alamouti space-time block code in case of linear estimation and prediction of the channel coefficients or a delay of the channel estimates. Uncorrelated as well as correlated frequency flat channels are considered. Based on the analytical expressions a comparison for these three representatives for all three types of CSI is made. The break even point between the three schemes is computed numerically, which can serve as a switching point between the concepts.

Original languageEnglish
Pages (from-to)1916-1921
Number of pages6
JournalIEEE International Conference on Communications
Volume3
StatePublished - 2005
Event2005 IEEE International Conference on Communications, ICC 2005 - Seoul, Korea, Republic of
Duration: 16 May 200520 May 2005

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