A Cross-Layer Rethink on the Sensing-Throughput Tradeoff for Cognitive Radio Networks

Author

Shaojie Zhang ; Haitao Zhao ; Shan Wang ; Jibo Wei

Author_Institution

Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China

Volume

18

Issue

7

fYear

2014

fDate

Jul-14

Firstpage

1226

Lastpage

1229

Abstract

This letter investigates the sensing-throughput tradeoff problem in cognitive radio networks from a cross-layer perspective, jointly considering the impact of imperfect spectrum sensing and access contention. Furthermore, the optimized solution to this tradeoff is formulated via taking the interference probability, rather than the detection probability, as the optimization constraint. Compared with the results obtained only from the physical layer, the proposed solutions can improve the secondary throughput significantly.

Keywords

cognitive radio; optimisation; radio spectrum management; radiofrequency interference; signal detection; access contention; cognitive radio networks; cross-layer perspective; cross-layer rethink; detection probability; imperfect spectrum sensing; interference probability; optimization constraint; secondary throughput; sensing-throughput tradeoff; Cognitive radio; Interference; Optimization; Physical layer; Radiation detectors; Throughput; Cognitive radio networks; cross-layer design; sensing-throughput tradeoff;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2014.2325021

Filename

6817531