An Iterative Algorithm for Downlink Multi-Cell Beam-Forming

Author

Le, Tuan Anh ; Nakhai, Mohammad Reza

Author_Institution

Centre for Telecommun. Res., King´´s Coll. London, London, UK

fYear

2011

fDate

5-9 Dec. 2011

Firstpage

1

Lastpage

6

Abstract

In this paper, we address the problem of severe performance degradation of cell-edge users in conventional cellular networks via multicell processing with improved spectral efficiency. Using uplink-downlink duality, we propose an iterative multicell beamforming algorithm that minimises the total transmit power within a virtual cell of 3 adjacent sectors of 3 neighbouring BSs. We derive and employ a channel model that includes the angular spread caused by random local scatterers in the vicinity of a user. Simulation results confirm that the proposed algorithm converges fast to the optimal solution.

Keywords

antenna arrays; array signal processing; cellular radio; iterative methods; radio links; wireless channels; cell-edge user; cellular network; channel model; downlink multicell beamforming; iterative multicell beamforming algorithm; multicell processing; optimal solution; performance degradation; random local scatterer; spectral efficiency; uplink-downlink duality; virtual cell; Antenna arrays; Array signal processing; Computer architecture; Interference; Microprocessors; Signal to noise ratio; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference (GLOBECOM 2011), 2011 IEEE

Conference_Location

Houston, TX, USA

ISSN

1930-529X

Print_ISBN

978-1-4244-9266-4

Electronic_ISBN

1930-529X

Type

conf

DOI

10.1109/GLOCOM.2011.6133913

Filename

6133913