Simple Primary User Signal Area Estimation for Spectrum Measurement



Umebayashi, Kenta, Moriwaki, Kazuki, Mizuchi, Riki, Iwata, Hiroki, Tiiro, Samuli, Lehtomaki, Janne J, Lopez-Benitez, Miguel ORCID: 0000-0003-0526-6687 and Suzuki, Yasuo
(2016) Simple Primary User Signal Area Estimation for Spectrum Measurement. IEICE TRANSACTIONS ON COMMUNICATIONS, E99B (2). pp. 523-532.

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Abstract

This paper investigates a signal area (SA) estimation method for wideband and long time duration spectrum measurements for dynamic spectrum access. SA denotes the area (in time/frequency domain) occupied by the primary user's signal. The traditional approach, which utilizes only Fourier transform (FT) and energy detector (ED) for SA estimation, can achieve low complexity, but its estimation performance is not very high. Against this issue, we apply post-processing to improve the performance of the FT-based ED. Our proposed method, simple SA (SSA) estimation, exploits the correlation of the spectrum states among the neighboring tiles and the fact that SA typically has a rectangular shape to estimate SA with high accuracy and relatively low complexity compared to a conventional method, contour tracing SA (CT-SA) estimation. Numerical results will show that the S-SA estimation method can achieve better detection performance. The SA estimation and processing can reduce the number of bits needed to store/transmit the observed information compared to the FT-based ED. Thus, in addition to improved detection performance it also compresses the data.

Item Type: Article
Uncontrolled Keywords: dynamic spectrum access, smart spectrum access, spectrum measurement, cognitive radio, signal detection, signal area estimation
Depositing User: Symplectic Admin
Date Deposited: 26 Apr 2016 14:38
Last Modified: 22 Jan 2024 09:27
DOI: 10.1587/transcom.2015EBP3240
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3000618