Paper Info
Title
Cognitive radio networks based on opportunistic beamforming with quantized feedback
Abstract
In this paper, we consider an opportunistic beamforming scheduling scheme of secondary users (SUs) which can share the spectrum with a primary user (PU) in an underlay cognitive radio network, In the scheduling process, the cognitive base station (CBS) having multi-antennas, generates orthogonal beams which insure the minimum interference to the PU. Then, each SU feeds hack its maximum signal to interference and noise ratio (SINR) and the corresponding beam index to the CBS. The CBS selects the users having the largest SINRs for transmission. The aim of our work is to study the effect of SINR feedback quantization on the throughput of the secondary system. To do this, we derive an accurate statistical characterization of ordered beams SINK and then we derive the closed-form expression of the system throughput with SINK feedback quantization based on Lloyd-Max algorithm.
Year
Venue
Keywords
2015
European Signal Processing Conference
Cognitive radio,opportunistic beamforming,feedback quantization,Lloyd-Max quantizer
Field
DocType
ISSN
Beamforming,Computer science,Scheduling (computing),Quantized feedback,Signal-to-noise ratio,Electronic engineering,Speech recognition,Interference (wave propagation),Throughput,Quantization (signal processing),Cognitive radio
Conference
2076-1465
Citations 
PageRank 
References 
0
0.34
8
Authors
3
Name
Order
Citations
PageRank
Ayman Massaoudi151.52
Noura Sellami23211.05
Mohamed Siala372.30