Multi-user OFDM subcarrier allocation for cognition radio

Author

Zhao, Mei ; Zhang, Bo ; Pan, Cunhua

Author_Institution

Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China

fYear

2011

fDate

9-11 Nov. 2011

Firstpage

1

Lastpage

5

Abstract

This article presents the mathematical model of subcarrier allocation scheme combining radar system with cognitive OFDM system based on three goals respectively. These optimization goals are minimal interference, maximum capacity and maximum capacity interference ratio. And we give the three allocation algorithm implemention steps; then compare their performance, including total system capacity and total interference. The results show that subcarrier allocation is a dynamic allocation scheme and we need to trade off between capacity and interference.

Keywords

OFDM modulation; cognitive radio; radar applications; radiofrequency interference; capacity-interference trade off; cognition radio; cognitive OFDM system; dynamic allocation scheme; mathematical model; maximum capacity interference ratio; minimal interference; multiuser OFDM subcarrier allocation scheme; orthogonal frequency division multiplexing; radar system; system capacity; Base stations; Cognitive radio; Interference; Mobile communication; OFDM; Radar; Resource management; OFDM system; capacity; cognitive radio; interference; subcarrier allocation;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Signal Processing (WCSP), 2011 International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4577-1009-4

Electronic_ISBN

978-1-4577-1008-7

Type

conf

DOI

10.1109/WCSP.2011.6096722

Filename

6096722