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Wireless Personal Communications
Erschienen in: Wireless Personal Communications 3/2016

18.08.2016

Double Codebook Estimation and Feedback with Outdated CSI

verfasst von: Dan Wang, Yu Liu, Yong Liao

Erschienen in: Wireless Personal Communications | Ausgabe 3/2016

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Abstract

Due to the time-variant channel, outdated channel state information (CSI) largely reduce the performance of double codebook beamforming system. This paper studies the two codebooks independently and proposes an adaptive feedback period adjustment Strategy for long-term codebook and a prediction estimation algorithm for short-term codebook respectively. The former dynamically adjusts feedback period so as to improve the feedback timeliness and uplink feedback resource utilization. The later adopts improved Kalman prediction algorithm to predict CSI. Finally simulation results shows that the proposed schemes can effectively improve the performance of double codebook estimation with outdated CSI.
Vorheriger Artikel Comparative Performance Investigation of Supervised and Unsupervised Learning Outlines applied in Cognitive Radio Systems
Nächster Artikel Evaluation of Conventional and Wavelet Based OFDM System for ICI Cancellation

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Metadaten
Titel
Double Codebook Estimation and Feedback with Outdated CSI
verfasst von
Dan Wang
Yu Liu
Yong Liao
Publikationsdatum
18.08.2016
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 3/2016
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-016-3535-y

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