Link adaptation with multiple feedback thresholds

Author

Patachaianand, R. ; Sandrasegaran, K.

Author_Institution

Fac. of Eng. & Inf. Technol., Univ. of Technol. Sydney, Ultimo, NSW, Australia

fYear

2012

fDate

9-12 Sept. 2012

Firstpage

496

Lastpage

501

Abstract

Opportunistic scheduling in multiuser system can improves the achievable sum-rate capacity when the number of users increases. The scheduling requires the knowledge of channel state information (CSI) which is generated and sent from the users. In this chapter, the achievable sum rate of multiuser systems with multiple feedback thresholds is formulated. It is demonstrated that the system with two thresholds can achieve 98% of the full-CSI sum rate which is equivalent to around 8.5% improvement compared with the system with one threshold without any requirement for additional feedback load.

Keywords

multiuser channels; radio equipment; scheduling; channel state information; full-CSI sum rate; link adaptation; multiple feedback thresholds; multiuser system; multiuser systems; opportunistic scheduling; sum-rate capacity; Base stations; Channel state information; Equations; Mathematical model; Processor scheduling; Protocols; Signal to noise ratio; Limited feedback; Multiuser systems; Opportunistic scheduling;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on

Conference_Location

Sydney, NSW

ISSN

2166-9570

Print_ISBN

978-1-4673-2566-0

Electronic_ISBN

2166-9570

Type

conf

DOI

10.1109/PIMRC.2012.6362836

Filename

6362836