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Erschienen in: Wireless Personal Communications 1/2017

26.04.2017

Decision Aided Uplink Compressive Channel Estimation for Massive MIMO Systems

verfasst von: Yang Nan, Xin Sun, Li Zhang

Erschienen in: Wireless Personal Communications | Ausgabe 1/2017

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Abstract

Thank to the observation that in massive multi-input multi-output systems, the channels associated with different base station antennas may share common sparse support, the significant path delays can be accurately captured by only few pilots, leading to a reduction of pilot overhead. However, when the number of pilots is small, the path gains can not be accurately estimated and this limits the system performance. To solve this problem, in this paper we propose a decision aided compressive sensing based channel estimation scheme, which utilizes the decoded data to refine the channel estimation. This scheme can effectively improve the channel estimation without increasing the length of pilot sequence, which is confirmed by both analyses and simulation results.

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Fußnoten
1
The complexity of antenna cooperation is omitted since it is negligible, and the extra complexity introduced by the MF combining is far less than the complexity of SP.
 
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Metadaten
Titel
Decision Aided Uplink Compressive Channel Estimation for Massive MIMO Systems
verfasst von
Yang Nan
Xin Sun
Li Zhang
Publikationsdatum
26.04.2017
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 1/2017
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-017-4159-6

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