2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications 2006
DOI: 10.1109/pimrc.2006.253963
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Iterative Channel Estimation for Orthogonal STBC MC-CDMA Systems over Realistic High-Mobility MIMO Channels

Abstract: Abstract-This paper investigates a downlink multiple-input multiple-output (MIMO) multi-carrier code division multiple access (MC-CDMA) system with pilot aided channel estimation (PACE) and iterative channel estimation (ICE) in the receiver. Due to the superposition of different users' spread data signals, zero-valued chips can occur after spreading, which can cause noise enhancement when using data estimates as reference signals in ICE. Hence, we propose a MIMO channel estimation method to overcome the above … Show more

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Cited by 4 publications
(2 citation statements)
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References 9 publications
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“…Furthermore, in [16] the embedded pilot structure of low power pilot spread symbols is used as initial CE in the turbo decoding process. Finally, in [17] a MIMO MC-CDMA scheme is described with iterative features where the CE is based on pilot symbols placed on discrete positions in the time-frequency domain.…”
Section: Introductionmentioning
confidence: 99%
“…Furthermore, in [16] the embedded pilot structure of low power pilot spread symbols is used as initial CE in the turbo decoding process. Finally, in [17] a MIMO MC-CDMA scheme is described with iterative features where the CE is based on pilot symbols placed on discrete positions in the time-frequency domain.…”
Section: Introductionmentioning
confidence: 99%
“…ICE algorithm for OFDM which feeds back the information from output of the channel decoder to estimation stage to reduce decision feedback errors was proposed [6]. Since CE gets additional information from the estimated data symbols, ICE achieves a further reduction of bit error rate (BER).The idea of ICE is extended to a MIMO MC-CDMA system [8] and then with Walsh-Hadamard (WH) spreading codes which employ orthogonal STBCs at the transmitter [9] to obtain better performance. In this paper turbo aided ICE is proposed to further improve the performance of MC-CDMA systems.…”
Section: Introductionmentioning
confidence: 99%