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Scalable Limited Channel Feedback for Downlink Coordinated Multi-Cell Transmission

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7 Author(s)
Hao Liu ; Dept. of Res. & Innovation, Alcatel-Lucent Shanghai Bell, Shanghai, China ; Yang Song ; Dong Li ; Liyu Cai
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It is well known that coordinated multi-cell transmission in downlink (DL) is a promising technique to significantly increase the system throughput and cell-edge user throughput. In this paper, we propose a scalable two-stage channel feedback mechanism not only to support downlink single-cell multi-user MIMO (MU-MIMO), but also to efficiently support multi-cell coordination. This scheme yields remarkable system performance improvements with considerable uplink (UL) feedback overhead, and also has good backward compatibility for single-cell transmission scheme.

Published in:

Vehicular Technology Conference (VTC Spring), 2011 IEEE 73rd

Date of Conference:

15-18 May 2011

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