Title :
A low-power reconfigurable digital pulse-shaping filter for an UTRA-TDD mobile terminal receiver
Author :
Veljanovski, R. ; Singh, J. ; Faulkner, M.
Author_Institution :
Centre of Telecommun. & Microelectron., Victoria Univ., Melbourne, Vic., Australia
Abstract :
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.
Keywords :
3G mobile communication; FIR filters; adjacent channel interference; digital filters; low-power electronics; pulse shaping circuits; radio receivers; time division multiplexing; UMTS terrestrial radio access; UTRA-TDD downlink mode; UTRA-TDD receiver; adjacent channel interference; automatic filter coefficient scaling; base stations; folded FIR structure; in-band power; low-power filter; mobile terminal receiver; near far problem; out-of-band power; power dissipation reduction; pulse-shaping filter; reconfigurable digital filter; standby time; talk time; time division duplex; 3G mobile communication; Base stations; Digital filters; Downlink; Energy consumption; Finite impulse response filter; Frequency synchronization; IEEE members; Interchannel interference; Power dissipation;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1186782
