Multi-User MIMO Channel Estimation in the Presence of Carrier Frequency Offsets

During the uplink of a multi-user MIMO system, a compensation of different users' carrier frequency offsets (CFOs) at the receiver's side is possible only after the spatial separation of the single user signals. As spatial separation requires knowledge of the communication channel, this is...

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Bibliographic Details
Published inConference Record of the Thirty-Ninth Asilomar Conference onSignals, Systems and Computers, 2005 pp. 462 - 466
Main Authors Schellmann, M., Stanczak, S.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
Antennas and propagation
Channel estimation
Distortion
Frequency estimation
Interference
MIMO
Receiving antennas
Signal processing
Time domain analysis
Transmitting antennas
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Summary:During the uplink of a multi-user MIMO system, a compensation of different users' carrier frequency offsets (CFOs) at the receiver's side is possible only after the spatial separation of the single user signals. As spatial separation requires knowledge of the communication channel, this issue longs for a channel estimation scheme capable to estimate the channel from received sequences that are distorted by CFOs from different users. We propose orthogonal sequences to be used as pilots for the simultaneous estimation of all user channels in the time-domain, which satisfy this requirement
ISBN:9781424401314
1424401313
ISSN:1058-6393
2576-2303
DOI:10.1109/ACSSC.2005.1599790