10 فروردین 1403
عباسعلي شريفي

عباسعلی شریفی

مرتبه علمی: دانشیار
نشانی: بناب-بزرگراه ولایت- دانشگاه بناب
تحصیلات: دکترای تخصصی / مهندسی برق (مخابرات- سیستم)
تلفن: 041-37745000
دانشکده: دانشکده فنی و مهندسی
گروه: گروه مهندسی برق

مشخصات پژوهش

عنوان
Cooperative spectrum sensing in the presence of primary user emulation attack in cognitive radio network: multi-level hypotheses test approach
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Bayes cost Cognitive radio Cooperative spectrum sensing Multi-level hypothesis testing Primary user emulation attack
پژوهشگران مرتضی شریفی (نفر اول)، عباسعلی شریفی (نفر دوم)، میر جواد موسوی نیا (نفر سوم)

چکیده

The inherent nature of cognitive radio (CR) networks has brought new threats to wireless communications. Primary user emulation attack (PUEA) has been widely studied as a serious threat to cooperative spectrum sensing (CSS) in CR networks. In PUEA, a malicious user can obstruct CR users from accessing idle frequency bands by imitating licensed primary user (PU) signal characteristics. The present study introduces a new CSS scheme in the presence of a malicious PUEA based on multi-level hypothesis testing (MLHT). In the proposed method, generalizing from binary hypothesis testing to MLHT, we partition the decision space to four decision options and apply minimum Bayes cost criteria to determine the channel status. We also discuss practical limitation issues that need to be considered when applying the MLHT approach. Simulation results are provided to indicate the performance improvement of the proposed MLHT method against PUEA, compared with the conventional method.