A low-power reconfigurable digital pulse-shaping filter for an UTRA-TDD mobile terminal receiver

• Published in: The 2002 45th Midwest Symposium on Circuits and Systems, 2002. MWSCAS-2002 Vol. 2; pp. II - 1
• Main Authors: Veljanovski, R., Singh, J., Faulkner, M.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 2002
• Subjects: 3G mobile communication; Base stations; Digital filters; Downlink; Energy consumption; Finite impulse response filter; Frequency synchronization; IEEE members; Interchannel interference; Power dissipation
• ISBN: 0780375238; 9780780375239
• DOI: 10.1109/MWSCAS.2002.1186782

A novel reconfigurable digital pulse-shaping filter has been proposed for a mobile terminal receiver that can drastically reduce power dissipation dependant on adjacent channel interference. It automatically scales the number of filter coefficients by monitoring the in-band and out-of-band powers. This new filter performance was evaluated in a simulation UTRA-TDD (UMTS terrestrial radio access - time division duplex) environment because of the large near far problem caused by adjacent channel interference from adjacent mobiles and base stations. The UTRA-TDD downlink mode was examined statistically and results show that this reconfigurable filter can save an average of 75% power dissipation when compared to a fixed filter length of 41. This will prolong talk and standby time in a mobile terminal.