Title :
Low Complexity FFT Based Spectrum Sensing in Bluetooth System
Author :
Oh, Dong-Chan ; Lee, Yong-Hwan
Author_Institution :
Sch. of Electr. Eng., INMC Seoul Nat. Univ., Seoul
Abstract :
In this paper, we propose a complexity reduced spectrum sensing technique for Bluetooth to find channels free from the use of other communication devices in 2.4 GHz ISM band. By exploiting the spectrum characteristics of interference sources, the proposed scheme detects the availability of channels by comparing the power spectrum density (PSD) with a threshold. To reduce the implementation complexity, the PSD is calculated by means of fast Fourier transform and linear interpolation. The threshold for the detection is determined to maximize the detection probability. To further improve the transmission performance, the proposed scheme dynamically changes the channels by measuring the transmission performance.
Keywords :
Bluetooth; fast Fourier transforms; interpolation; probability; Bluetooth system; ISM band; detection probability; frequency 2.4 GHz; interference sources; linear interpolation; low complexity FFT; power spectrum density; spectrum sensing; Adaptive control; Bluetooth; Degradation; Fast Fourier transforms; Frequency; Interference; Interpolation; Personal area networks; Signal detection; Wireless LAN;
Conference_Titel :
Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-2517-4
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2009.5073654
