Title :
An Experimental Downlink Multiuser MIMO System with Distributed and Coherently-Coordinated Transmit Antennas
Author :
Samardzija, Dragan ; Huang, Heng ; Valenzuela, Raul ; Sizer, T.
Author_Institution :
Alcatel-Lucent, Murray Hill
Abstract :
In this paper we present a multiuser MIMO experimental system and the corresponding indoor measurement results that demonstrate power of distributed and coherently-coordinated downlink transmit antennas using zero-forcing (ZF) beamforming. We present experimental performance under different conditions and communication scenarios. We consider different transmit power levels, number of transmit antennas, resolution of channel state information (CSI) quantizer as well as CSI feedback channel data rates. We demonstrate significant gains even in the presence of practical impairments.
Keywords :
MIMO communication; antennas; CSI feedback channel data rates; CSI quantizer; channel state information; coherently-coordinated transmit antennas; distributed transmit antennas; downlink transmit antennas; experimental downlink multiuser MIMO system; indoor measurement; multiuser MIMO experimental system; zero-forcing beamforming; Array signal processing; Base stations; Channel state information; Communications Society; Downlink; Interference; MIMO; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Communications, 2007. ICC '07. IEEE International Conference on
Conference_Location :
Glasgow
Print_ISBN :
1-4244-0353-7
DOI :
10.1109/ICC.2007.888