Impact of open-loop power controlled feedback on multiuser capacity in Rayleigh fading channels

Author

Shin, Eun-Hee ; Kim, Dongwoo ; Zander, Jens

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Hanyang Univ., Ansan, South Korea

Volume

13

Issue

12

fYear

2009

fDate

12/1/2009 12:00:00 AM

Firstpage

932

Lastpage

934

Abstract

This letter investigates the impact of open-loop power control (OLPC) employed in uplink (UL) feedback channel on the multiuser downlink (DL) capacity. OLPC is used to reduce the capacity loss caused by the feedback outage. Assuming flat Rayleigh channels correlated between DL and UL, we provide probability distributions on the DL SNR that are successfully fed back through UL managed by OLPC. Numerical results are used to verify the accuracy of the analysis and to show the impact of relevant parameters of OLPC on the capacity as a function of DL-UL correlation.

Keywords

Rayleigh channels; feedback; open loop systems; probability; telecommunication congestion control; Rayleigh fading channels; feedback outage; multiuser capacity; multiuser downlink capacity; open-loop power control; open-loop power controlled feedback; probability distributions; uplink feedback channel; Base stations; Channel capacity; Downlink; Fading; Feedback; Helium; Open loop systems; Power control; Probability distribution; Rayleigh channels; Multiuser capacity, OLPC, feedback channel, correlated Rayleigh fading;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2009.12.091286

Filename

5353267