TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Super-allocation and Cluster-based Cooperative Spectrum Sensing in Cognitive Radio Networks |
| 영문제목(English Title) |
Super-allocation and Cluster-based Cooperative Spectrum Sensing in Cognitive Radio Networks |
| 저자(Author) |
Md. Sipon Miah
Heejung Yu
Md. Mahbubur Rahman
|
| 원문수록처(Citation) |
VOL 08 NO. 10 PP. 3302 ~ 3320 (2014. 10) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
An allocation of sensing and reporting times is proposed to improve the sensing performance by scheduling them in an efficient way for cognitive radio networks with cluster-based cooperative spectrum sensing. In the conventional cooperative sensing scheme, all secondary users (SUs) detect the primary user (PU) signal to check the availability of the spectrum during a fixed sensing time slot. The sensing results from the SUs are reported to cluster heads (CHs) during the reporting time slots of the SUs and the CHs forward them to a fusion center (FC) during the reporting time slots of the CHs through the common control channels for the global decision, respectively. However, the delivery of the local decision from SUs and CHs to a CH and FC requires a time which does not contribute to the performance of spectrum sensing and system throughput. In this paper, a super-allocation technique, which merges reporting time slots of SUs and CHs to sensing time slots of SUs by re-scheduling the reporting time slots, has been proposed to sense the spectrum more accurately. In this regard, SUs in each cluster can obtain a longer sensing duration depending on their reporting order and their clusters except for the first SU belonged to the first cluster. The proposed scheme, therefore, can achieve better sensing performance under -28 dB to -10 dB environments and will thus reduce reporting overhead |
| 키워드(Keyword) |
cognitive radio network
super-allocation
cluster head
fusion center
|
| 파일첨부 |
PDF 다운로드
|
