Multicell Downlink Capacity with Base Station Cooperation

Yongpeng WU  Bin JIANG  Xiqi GAO  

Publication
IEICE TRANSACTIONS on Communications   Vol.E93-B   No.10   pp.2761-2765
Publication Date: 2010/10/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.2761
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fundamental Theories for Communications
Keyword: 
base station cooperation,  intra cell scheduling,  Wyner model,  

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Summary: 
In this paper, we study the performance of base station (BS) cooperation for downlink transmission. Based on a modified Wyner multicell model, an opportunistic intra cell scheduling scheme is proposed. Then, we derive a closed-form expression for the sum-rate capacity of the proposed scheme in the Rayleigh flat-fading channel. Also, we prove that the opportunistic scheme can be regarded as providing a downlink beam-forming scheme to achieve a tighter lower bound for the downlink sum rate capacity. Numerical results confirm our theoretical analysis.