Joint base station clustering and beamformer design for partial coordinated transmission using statistical channel state information

Maziar Sanjabi, Mingyi Hong, Meisam Razaviyayn, Zhi Quan Luo

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations

Abstract

In this paper we consider the problem of partial coordinated transmission in the downlink of a wireless heterogeneous network (HetNet). The partial coordination is crucial in trading off system performance with backhaul overhead, and it is achieved through jointly optimizing the base station (BS) clustering and the downlink beamformers. Unlike many existing works, we focus on the practical scenario where the channel state information (CSI) is imperfect/incomplete at the transmitter. Mathematically, we formulate the problem into a penalized stochastic optimization problem, and propose an algorithm that converges almost surely to its stationary solution set. Interestingly, our method does not require any additional computational complexity or memory compared to the existing algorithms using perfect CSI. Effectiveness of our method is validated through numerical experiments.

Original languageEnglish (US)
Pages359-363
Number of pages5
DOIs
StatePublished - Oct 31 2014
Event2014 15th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2014 - Toronto, Canada
Duration: Jun 22 2014Jun 25 2014

Other

Other2014 15th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2014
Country/TerritoryCanada
CityToronto
Period6/22/146/25/14

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