Cooperative spectrum sensing for cognitive radios under bandwidth constraints

Sun Chunhua, Zhang Wei, Khaled Letaief

Research output: Chapter in Book/Report/Conference proceedingConference contribution

308 Citations (Scopus)

Abstract

In cognitive radio systems, cooperative spectrum sensing is conducted among the cognitive users so as to detect the primary user accurately. However, when the number of cognitive users tends to be very large, the bandwidth for reporting their sensing results to the common receiver will be very huge. In this paper, we employ a censoring method with quantization to decrease the average number of sensing bits to the common receiver. By censoring the collected local observations, only the users with enough information will send their local one bit decisions (0 or 1) to the common receiver. The performance of spectrum sensing is investigated for both perfect and imperfect reporting channels. Numerical results will show that the average number of sensing bits decreases greatly at the expense of a little sensing performance loss.

Original languageEnglish
Title of host publication2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Pages1-5
Number of pages5
DOIs
Publication statusPublished - 2007
Externally publishedYes
Event2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 - Kowloon, China
Duration: 11 Mar 200715 Mar 2007

Other

Other2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
CountryChina
CityKowloon
Period11/3/0715/3/07

Fingerprint

Cognitive radio
Bandwidth
Radio systems

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Chunhua, S., Wei, Z., & Letaief, K. (2007). Cooperative spectrum sensing for cognitive radios under bandwidth constraints. In 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 (pp. 1-5). [4204182] https://doi.org/10.1109/WCNC.2007.6

Cooperative spectrum sensing for cognitive radios under bandwidth constraints. / Chunhua, Sun; Wei, Zhang; Letaief, Khaled.

2007 IEEE Wireless Communications and Networking Conference, WCNC 2007. 2007. p. 1-5 4204182.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Chunhua, S, Wei, Z & Letaief, K 2007, Cooperative spectrum sensing for cognitive radios under bandwidth constraints. in 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007., 4204182, pp. 1-5, 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007, Kowloon, China, 11/3/07. https://doi.org/10.1109/WCNC.2007.6
Chunhua S, Wei Z, Letaief K. Cooperative spectrum sensing for cognitive radios under bandwidth constraints. In 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007. 2007. p. 1-5. 4204182 https://doi.org/10.1109/WCNC.2007.6
Chunhua, Sun ; Wei, Zhang ; Letaief, Khaled. / Cooperative spectrum sensing for cognitive radios under bandwidth constraints. 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007. 2007. pp. 1-5
@inproceedings{38544ed168ed4566b9fe6630320cddb3,
title = "Cooperative spectrum sensing for cognitive radios under bandwidth constraints",
abstract = "In cognitive radio systems, cooperative spectrum sensing is conducted among the cognitive users so as to detect the primary user accurately. However, when the number of cognitive users tends to be very large, the bandwidth for reporting their sensing results to the common receiver will be very huge. In this paper, we employ a censoring method with quantization to decrease the average number of sensing bits to the common receiver. By censoring the collected local observations, only the users with enough information will send their local one bit decisions (0 or 1) to the common receiver. The performance of spectrum sensing is investigated for both perfect and imperfect reporting channels. Numerical results will show that the average number of sensing bits decreases greatly at the expense of a little sensing performance loss.",
author = "Sun Chunhua and Zhang Wei and Khaled Letaief",
year = "2007",
doi = "10.1109/WCNC.2007.6",
language = "English",
isbn = "1424406595",
pages = "1--5",
booktitle = "2007 IEEE Wireless Communications and Networking Conference, WCNC 2007",

}

TY - GEN

T1 - Cooperative spectrum sensing for cognitive radios under bandwidth constraints

AU - Chunhua, Sun

AU - Wei, Zhang

AU - Letaief, Khaled

PY - 2007

Y1 - 2007

N2 - In cognitive radio systems, cooperative spectrum sensing is conducted among the cognitive users so as to detect the primary user accurately. However, when the number of cognitive users tends to be very large, the bandwidth for reporting their sensing results to the common receiver will be very huge. In this paper, we employ a censoring method with quantization to decrease the average number of sensing bits to the common receiver. By censoring the collected local observations, only the users with enough information will send their local one bit decisions (0 or 1) to the common receiver. The performance of spectrum sensing is investigated for both perfect and imperfect reporting channels. Numerical results will show that the average number of sensing bits decreases greatly at the expense of a little sensing performance loss.

AB - In cognitive radio systems, cooperative spectrum sensing is conducted among the cognitive users so as to detect the primary user accurately. However, when the number of cognitive users tends to be very large, the bandwidth for reporting their sensing results to the common receiver will be very huge. In this paper, we employ a censoring method with quantization to decrease the average number of sensing bits to the common receiver. By censoring the collected local observations, only the users with enough information will send their local one bit decisions (0 or 1) to the common receiver. The performance of spectrum sensing is investigated for both perfect and imperfect reporting channels. Numerical results will show that the average number of sensing bits decreases greatly at the expense of a little sensing performance loss.

UR - http://www.scopus.com/inward/record.url?scp=36348933902&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36348933902&partnerID=8YFLogxK

U2 - 10.1109/WCNC.2007.6

DO - 10.1109/WCNC.2007.6

M3 - Conference contribution

SN - 1424406595

SN - 9781424406593

SP - 1

EP - 5

BT - 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007

ER -