2008
DOI: 10.1155/2008/149803
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A Low-Complexity LMMSE Channel Estimation Method for OFDM-Based Cooperative Diversity Systems with Multiple Amplify-and-Forward Relays

Abstract: Orthogonal frequency division multiplexing-(OFDM-) based amplify-and-forward (AF) cooperative communication is an effective way for single-antenna systems to exploit the spatial diversity gains in frequency-selective fading channels, but the receiver usually requires the knowledge of the channel state information to recover the transmitted signals. In this paper, a training-sequences-aided linear minimum mean square error (LMMSE) channel estimation method is proposed for OFDMbased cooperative diversity systems… Show more

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Cited by 33 publications
(22 citation statements)
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References 26 publications
(40 reference statements)
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“…Let r (k,l) r2 be the second part of the lth subgroup in the kth group transmitted from R 2 , then the corresponding received part at D is given by (12) where r (2,l…”
Section: During Odd Time Slotmentioning
confidence: 99%
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“…Let r (k,l) r2 be the second part of the lth subgroup in the kth group transmitted from R 2 , then the corresponding received part at D is given by (12) where r (2,l…”
Section: During Odd Time Slotmentioning
confidence: 99%
“…For the cooperative relaying networks, many works focusing on the channel estimation can be found in [9][10][11][12]. Lalos et al [9] proposed a hybrid channel estimation scheme utilizing both training sequence and channel output correlation information for three-node cooperative relaying networks.…”
Section: Introductionmentioning
confidence: 99%
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