Author
Ercan, Ali Özer, Sunay, Mehmet Oğuz
Publication Date
2012-06
Publication Place
-
IEEE
Subject
Energy sensing strategy, Flat-fading channel, Opportunistic spectrum access
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1089-7798
Record ID
220c7ca3-1a20-4b5a-92ec-97aa1d951bba
Library Location
Electrical & Electronics Engineering, Computer Science
Date
2012-06
Notes
Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text
This paper introduces a correlator-based energy sensing strategy for opportunistic spectrum access in a slow, flat-fading channel. The correlator provides weighted energy accumulation in time. We assume that the noise variance is known and the primary user (PU) traffic follows a two state Markov chain with known idle and busy rates. Using Chebyshev bounds on missed detection and false alarm probabilities, we find that the optimal weighting function is an increasing function of time and its shape is dependent on the PU traffic characteristics and SNR. We show that the traditional flat-integration based energy collection method is suboptimal both in the error probability and channel utilization sense.
DOI
10.1109/LCOMM.2012.042312.112503
Cilt
16
