A Partial-User Analog Feedback Scheme in Multiuser MIMO Broadcast Channels

Author

Sun, Dong ; Qiu, Ling

Author_Institution

Personal Commun. Network & Spread Spectrum Lab., Univ. of Sci. & Technol. of China, Hefei, China

fYear

2009

fDate

20-23 Sept. 2009

Firstpage

1

Lastpage

5

Abstract

We investigate multiuser MIMO downlink Broadcast Channels (BC) under the impact of channel estimation error and imperfect channel state information analog feedback. A low-complexity Partial-User Analog Feedback (PU-AF) algorithm is proposed; and we show that multiuser MIMO BCs using PU-AF achieves full multiuser diversity and multiplexing gain; however the feedback overhead is reduced significantly. At low to moderate SNR region and under moderate uplink sum feedback rate constraint, PU-AF turns to be a promising technique in the standardization of next generation wireless systems.

Keywords

MIMO communication; broadcast channels; channel estimation; channel estimation error; imperfect channel state information analog feedback; multiuser MIMO broadcast channels; partial-user analog feedback scheme; Array signal processing; Broadcast technology; Broadcasting; Channel estimation; Channel state information; Downlink; Frequency estimation; MIMO; State feedback; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th

Conference_Location

Anchorage, AK

ISSN

1090-3038

Print_ISBN

978-1-4244-2514-3

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2009.5378986

Filename

5378986