Performance of Hybrid Sensing Method in Environment with Noise Uncertainty

• Autorzy: Kustra M. , Kosmowski K. , Suchański M.

Identyfikatory

DOI

10.26636/jtit.2018.123117

• Języki publikacji: EN

Abstrakty

EN

The paper presents a novel hybrid spectrum sensing method used in cognitive radio and presents a hybrid detector (HD) which improves the sensing performance. The proposed HD takes advantage of the energy detection (ED) principle and a method based on Covariance Absolute Value (CAV), as well as on Cyclic Autocorrelation Function (CAF). The paper shows the limitations of using ED, resulting from the uncertainty of spectral density of noise power estimation, known as the SNR wall. The paper describes a system model and presents simulation results for the OFDM signal of a WiMAX-based communications system. The simulation results refer to an ideal environment with well-known parameters, and to an environment with uncertain spectral density of noise power estimation.

Słowa kluczowe

EN

Covariance Absolute Value; Cyclic Autocorrelation Function; hybrid detector; noise uncertainty; OFDM; SNR wall; WiMAX

• Wydawca: Instytut Łączności - Państwowy Instytut Badawczy
• Czasopismo: Journal of Telecommunications and Information Technology
• Rocznik: 2018
• Tom: nr 1
• Strony: 51--57
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Kustra M.

• Military Communication Institute, Warszawska 22A, 05-130 Zegrze, Poland

autor

Kosmowski K.

• Military Communication Institute, Warszawska 22A, 05-130 Zegrze, Poland

autor

Suchański M.

• Military Communication Institute, Warszawska 22A, 05-130 Zegrze, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).