Title :
Detection of GSM interference in a CDMA wireless communication link
Author :
Ho, K.C. ; Tutsanasuwan, S. ; Davis, C.H.
Author_Institution :
Dept. of Electr. Eng., Missouri Univ., Columbia, MO, USA
Abstract :
Two popular digital cellular standards deployed in North America are IS-95 CDMA and GSM. If these two systems are operating within the same geographic area such as a large metropolitan city, their signals can interfere with each other and cause performance degradation. This paper proposes the use of the least-squares technique in the spectral domain to identify the presence of GSM interference in a CDMA signal and to estimate the interference level if it is present. Simulation results show that the proposed method can detect interference with a signal-to-interference ratio up to 14 dB when the observation time is 20 msec and the signal-to-noise ratio is 10 dB
Keywords :
cellular radio; code division multiple access; digital radio; least squares approximations; multiuser channels; radio links; radiofrequency interference; signal detection; spectral analysis; telecommunication standards; CDMA signal; CDMA wireless communication link; GSM interference detection; IS-95 CDMA; North America; SIR; SNR; digital cellular standards; geographic area; interference level estimation; least-squares technique; metropolitan city; observation time; performance degradation; signal-to-interference ratio; signal-to-noise ratio; simulation results; spectral domain; Binary phase shift keying; Degradation; Frequency shift keying; GSM; Interference; Modulation; Multiaccess communication; Quadrature phase shift keying; Signal processing; Wireless communication;
Conference_Titel :
Wireless Communications and Networking Confernce, 2000. WCNC. 2000 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-6596-8
DOI :
10.1109/WCNC.2000.904656
