eprintid: 2011 rev_number: 11 eprint_status: archive userid: 291 dir: disk0/00/00/20/11 datestamp: 2016-12-03 07:23:57 lastmod: 2016-12-03 07:23:57 status_changed: 2016-12-03 07:23:57 type: conference_item metadata_visibility: show creators_name: Dinh, Thi Thai Mai creators_name: Bui, Quang Vinh creators_name: Nguyen, Truong Sinh creators_name: Nghiem, Van Han creators_name: Le, Hong Giap creators_name: Nguyen, Van Hung creators_id: dttmai@vnu.edu.vn creators_id: vinhbq_58@vnu.edu.vn creators_id: vinhnt_58@vnu.edu.vn creators_id: hannv_58@vnu.edu.vn creators_id: giaplh_58@vnu.edu.vn creators_id: hungnv.vnu.uet@gmail.com title: Performance of Cooperative Spectrum Sensing over Lognormal channel using EGC-based Soft Decision ispublished: pub subjects: Communications subjects: ECE divisions: fac_fet abstract: In cooperative spectrum sensing based on energy detection, there are two common techniques taken into account - Hard Decision Combining (HDC) and Soft Decision Combining (SDC). Several researches has addressed that SDC has better detection performance than HDC. Therefore, in this paper, we focus on Equal Gain Combining (EGC)–based soft decision under Lognormal fading channel. We propose using Moment-generating function (MGF) to approximate probability density function (PDF) of power sum of lognormal variables. Then we utilize approximated PDF for evaluating cooperative detection performance. Moreover, we also consider the optimal number of cooperating Cognitive Radios (CRs) using EGC-based soft decision date: 2016-12-23 date_type: published full_text_status: none pres_type: paper event_title: REV 2016 event_type: conference refereed: TRUE citation: Dinh, Thi Thai Mai and Bui, Quang Vinh and Nguyen, Truong Sinh and Nghiem, Van Han and Le, Hong Giap and Nguyen, Van Hung (2016) Performance of Cooperative Spectrum Sensing over Lognormal channel using EGC-based Soft Decision. In: REV 2016.