DocumentCode
778456
Title
On the Impact of PDF-matched Quantization on Orthogonal Random Beamforming
Author
Antón-Haro, Carles
Author_Institution
Centre Tecnologic de Telecomunicacions de Catalunya, Barcelona
Volume
11
Issue
4
fYear
2007
fDate
4/1/2007 12:00:00 AM
Firstpage
328
Lastpage
330
Abstract
Orthogonal random beamforming (ORB) schemes provide multi-user diversity and spatial multiplexing gains by exclusively using partial channel state information (CSI) at the transmitter. In this paper, we explore the impact of CSI quantization on the performance of ORB. By resorting to a dynamic programming formulation, we identify the optimal (i.e. pdf-matched) quantizer for which the sum-rate distortion is minimized. Performance is assessed by means of computer simulations and compared with that of a uniform quantizer
Keywords
array signal processing; dynamic programming; quantisation (signal); rate distortion theory; CSI; ORB scheme; PDF-matched quantization; channel state information; computer simulation; dynamic programming formulation; orthogonal random beamforming; sum-rate distortion; AWGN; Array signal processing; Broadcasting; Channel state information; Dynamic programming; MIMO; Multiuser detection; Quantization; Signal to noise ratio; Transmitters;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOM.2007.348290
Filename
4155632
Link To Document