Analysis of collaborative spectrum sensing with binary phase shift keying signal power estimation errors

作者：Cao, Ning^*; Mao, Minghe; Chen, Yunfei; Long, Min

来源：IET Science Measurement & Technology, 2014, 8(6): 350-358.

DOI：10.1049/iet-smt.2013.0218

• radio spectrum management
• phase shift keying
• error statistics
• maximum likelihood estimation
• modulation
• diversity reception
• telecommunication traffic
• collaborative spectrum sensing analysis
• binary phase shift keying signal power estimation error
• noniterative blind estimation method
• primary user signal power modulation
• maximum likelihood principle
• primary user traffic effect
• weighted linear combining method
• optimal combining method
• conventional equal gain combining method

Novel iterative and non-iterative blind estimation methods for binary phase shift keying modulated primary user signal power are proposed using the maximum-likelihood principle for collaborative spectrum sensing. Using these estimators, the performance of three different existing collaborative spectrum sensing methods is compared under realistic scenarios. The effect of the primary user traffic on these methods is also explored. Numerical results show that, unlike the case of no estimation error as examined in this literature, the performance gains of the weighted linear combining and optimal combining methods over the conventional equal gain combining method decrease or even become negative when there is estimation error. They also show that the proposed blind estimation methods offer an excellent trade-off between reliability and complexity.

• 出版日期2014-11
• 单位河海大学; 长沙理工大学