Title :
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
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;
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4673-2566-0
Electronic_ISBN :
2166-9570
DOI :
10.1109/PIMRC.2012.6362836
