Coordinated zero-forcing beamforming in multipoint MIMO networks for backhaul applications

Author

Sun, Xiantao ; Cimini, Leonard J. ; Greenstein, Larry J. ; Chan, Douglas S. ; Kruys, Jan

Author_Institution

Univ. of Delaware, Newark, DE, USA

fYear

2009

fDate

18-21 Oct. 2009

Firstpage

1

Lastpage

7

Abstract

The capacity of a multipoint MIMO wireless network is interference-limited. In order to increase the system capacity, MIMO precoding at the transmitter and decoding at the receiver can be employed so that interference among different nodes is eliminated or suppressed. In this paper, we propose precoding/decoding techniques based on an iterative zero-forcing approach. By utilizing the extra degrees of freedom provided by multiple transmit and receive antennas, this algorithm achieves good signal-to-interference-plus-noise ratio (SINR) and fast convergence. The sum-rate capacity and convergence behavior of this algorithm are studied and the possible application to MIMO backhaul networks is discussed.

Keywords

MIMO communication; antenna arrays; array signal processing; iterative decoding; least mean squares methods; precoding; wireless mesh networks; MIMO backhaul networks; backhaul applications; coordinated zero-forcing beamforming; multiple receive antennas; multiple transmit antennas; multipoint MIMO networks; precoding/decoding techniques; signal-to-interference-plus-noise ratio; system capacity; wireless network; Array signal processing; Convergence; Interference elimination; Interference suppression; Iterative algorithms; Iterative decoding; Iterative methods; MIMO; Transmitters; Wireless networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 2009. MILCOM 2009. IEEE

Conference_Location

Boston, MA

Print_ISBN

978-1-4244-5238-5

Electronic_ISBN

978-1-4244-5239-2

Type

conf

DOI

10.1109/MILCOM.2009.5379904

Filename

5379904