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Hyungjoon Song, Woohyun Seo, and Daesik Hong "Compressive Feedback Based on Sparse Approximation for Multiuser MIMO Systems," IEEE Trans. Veh. Technol., Feb 2010
[IEEE Trans. Veh. Technol.]
조회 71980
Status : | Published |
---|---|
Date : | 2010-02 |
Title : | Compressive Feedback Based on Sparse Approximation for Multiuser MIMO Systems |
Authors : | Hyungjoon Song, Woohyun Seo, and Daesik Hong |
Journal : | IEEE Transactions on Vehicular Technology |
Abstract : | In multiuser multiple-input-multiple-output (MU-MIMO) systems, limited feedback schemes using a vector quantization codebook (VQC) for partial channel state information (CSI) can enable a base station (BS) to enhance the sum throughput at low feedback rates. However, the VQC has a limited throughput gain, although it requires a great deal of memory and complexity as the feedback rate increases. Therefore, we propose a high-precision feedback technique by using sparse approximation and compression called 'compressive feedback (CF)'. By using the sparse approximation with a unitary codebook and the compression via a 'good' compression matrix, CF achieves greater sum throughput than VQC. Our analysis of the maximum achievable sum rate verifies the superiority of CF over VQC. |
URL : | http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5299071 |
Download : | http://mirinae.yonsei.ac.kr/?module=file...dfe5529b65 |
Hyungjoon Song; Woohyun Seo; Daesik Hong; , "Compressive Feedback Based on Sparse Approximation for Multiuser MIMO Systems,"Vehicular Technology, IEEE Transactions on , vol.59, no.2, pp.1017-1023, Feb. 2010
doi: 10.1109/TVT.2009.2035042
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5299071&isnumber=5415848
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