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Joint channel and power allocation scheme for cognitive wireless networks

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Cognitive radio (CR) is a promising technology deemed to improve the efficiency of spectrum utilization.This paper considers a spectrum underlay cognitive radio network, in which the cognitive users (CUs) are allowed to use the radio spectrum concurrently with the primary users (PUs) under the interference temperature constraint.We investigate the system performance by using the proposed joint channel and power allocation scheme under two transmit strategies to achieve higher data rates and performance diversity gain respectively.Simulation results show that the proposed scheme provides a significant improvement on the bit error rate (BER) performance and spectrum efficiency of a cognitive wireless network.

cognitive radio (CR)channel allocationpower allocationspectrum sharinginterference temperaturebit error rate (BER)

WU Zhuo、FEI Yue

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Key Laboratory of Specialty Fiber Optics and Optical Access Networks, School of Communication and Information Engineering, Shanghai University, Shanghai 200072, P. R. China

Shanghai Pujiang ProgramScience and Technology Commission of Shanghai MunicipalityInnovation Foundation of Shanghai UniversityCognitive Communications Consortium of the Worldwide Universities' Network

08PJ1405708220510900SHUCX102153

2011

10.1007/s11741-011-0702-1

上海大学学报(英文版)
上海大学

上海大学学报(英文版)

影响因子：0.196
ISSN：1007-6417
年,卷(期)：2011.15(2)
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