A Resource Allocation Scheme with Out-of-Band Interference Constraint in Cognitive Radio Systems

Author

Zhao, Tingting ; Zhao, Yuping

Author_Institution

State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China

fYear

2009

fDate

20-23 Sept. 2009

Firstpage

1

Lastpage

5

Abstract

In the orthogonal frequency division multiplexing (OFDM)-based cognitive radio (CR) systems, adaptive resource allocation should consider the out-of-band interference. In this paper, allocation schemes with different optimization targets and multiple practical constraints are studied. Nonlinear equations for the optimal allocation are deduced. Two suboptimal methods based on bit removal procedure are also proposed. Simulation verifies that the proposed methods can reach a better tradeoff between the optimization target and other constrained performance.

Keywords

OFDM modulation; cognitive radio; nonlinear equations; resource allocation; OFDM; adaptive resource allocation; cognitive radio systems; nonlinear equations; orthogonal frequency division multiplexing; out-of-band interference; Adaptive systems; Chromium; Cognitive radio; Constraint optimization; FCC; Interference constraints; Nonlinear equations; OFDM; Optimization methods; Resource management;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference Fall (VTC 2009-Fall), 2009 IEEE 70th

Conference_Location

Anchorage, AK

ISSN

1090-3038

Print_ISBN

978-1-4244-2514-3

Electronic_ISBN

1090-3038

Type

conf

DOI

10.1109/VETECF.2009.5379050

Filename

5379050