A wavelet packet transform-based approach for interference measurement in spread spectrum wireless communication systems

This paper mainly concerns interference measurement in spread spectrum, wireless communication systems. A new digital signal-processing method is proposed, which proves to be nonintrusive and independent of the specific system considered. Thanks to the properties of the wavelet packet transform, the method is capable of extracting the interference that occurred from the spread spectrum signal, thus ensuring accurate interference magnitude and frequency estimates also in critical conditions: interference level much smaller than that characterizing the spread spectrum signal, and interference spectral content very close to the carrier frequency of the considered system.

[1]  L. Milstein,et al.  Signal processing for interference rejection in spread spectrum communications , 1986, IEEE ASSP Magazine.

[2]  Leopoldo Angrisani,et al.  New digital signal-Processing approach for transmitter measurements in third generation Telecommunications systems , 2004, IEEE Transactions on Instrumentation and Measurement.

[3]  Wayne E. Stark,et al.  Interference mitigation in frequency-hopped spread-spectrum systems , 2000, 2000 IEEE Sixth International Symposium on Spread Spectrum Techniques and Applications. ISSTA 2000. Proceedings (Cat. No.00TH8536).

[4]  Gary J. Saulnier,et al.  Interference suppression using transform domain LMS adaptive filtering , 1996, 1996 IEEE Digital Signal Processing Workshop Proceedings.

[5]  Douglas L. Jones,et al.  Spread spectrum interference suppression using adaptive time-frequency tilings , 1997, 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[6]  Roger L. Peterson,et al.  Introduction to Spread Spectrum Communications , 1995 .

[8]  Moeness G. Amin,et al.  Interference mitigation in spread spectrum communication systems using time-frequency distributions , 1997, IEEE Trans. Signal Process..

[9]  Ali N. Akansu,et al.  Wavelet and subband transforms: fundamentals and communication applications , 1997, IEEE Commun. Mag..

[10]  L. Angrisani,et al.  Advanced digital signal processing solutions for performance testing and troubleshooting of CDMA transmitters , 2001, IMTC 2001. Proceedings of the 18th IEEE Instrumentation and Measurement Technology Conference. Rediscovering Measurement in the Age of Informatics (Cat. No.01CH 37188).

[11]  L. Angrisani,et al.  A new method for power measurements in digital wireless communication systems , 2002, IMTC/2002. Proceedings of the 19th IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.00CH37276).

[12]  M. Victor Wickerhauser,et al.  Adapted wavelet analysis from theory to software , 1994 .

[13]  Gary J. Saulnier,et al.  Perspectives in spread spectrum , 1998 .

[14]  Henry Stark,et al.  Direct-sequence spread spectrum narrowband interference rejection using property restoration , 1996, IEEE Trans. Commun..