作者
Subhash Lakshminaryana, Jakob Hoydis, Mérouane Debbah, Mohamad Assaad
发表日期
2010/9/26
研讨会论文
21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications
页码范围
2105-2110
出版商
IEEE
简介
We consider the problem of multi-cell downlink beamforming with N cells and K terminals per cell. Cooperation among base stations (BSs) has been found to increase the system throughput in a multi-cell set up by mitigating inter-cell interference. Most of the previous works assume that the BSs can exchange the instantaneous channel state information (CSI) of all their user terminals (UTs) via high speed backhaul links. However, this approach quickly becomes impractical as N and K grow large. In this work, we formulate a distributed beamforming algorithm in a multi-cell scenario under the assumption that the system dimensions are large. The design objective is the minimize the total transmit power across all BSs subject to satisfying the user SINR constraints while implementing the beamformers in a distributed manner. In our algorithm, the BSs would only need to exchange the channel statistics rather than the …
引用总数
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S Lakshminaryana, J Hoydis, M Debbah, M Assaad - 21st Annual IEEE International Symposium on …, 2010