Title :
Implementation of low power matched filter LSI for IMT-2000
Author :
Nakase, Hiroyuki ; Kubota, Koji ; Kameda, Suguru ; Togura, Kenji ; Masu, Kazuya ; Tsubouchi, Kazuo
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
Abstract :
We have implemented a switched current matched filter (SIMF) LSI for the synchronization channel of IMT-2000. A partial correlation structure has been proposed for reducing current transfer error accumulation, which degrades correlation dynamic range. Degradation of the correlation dynamic range can be improved 1.8 dB at the current transfer error of 1%. Power consumption of 7.5 mW has been estimated with 93% current-cut. 64 chip SIMF has been fabricated using 0.8 μm CMOS process. The correlation peaks can be clearly observed at the chip rate of 4 Mcps. 0.2-dB degradation of probability of synchronization error has been obtained
Keywords :
CMOS integrated circuits; land mobile radio; large scale integration; matched filters; radiofrequency filters; spread spectrum communication; switched current circuits; synchronisation; 0.8 mum; 4 MHz; 7.5 mW; CMOS process; IMT-2000; chip rate; correlation dynamic range; current transfer error accumulation; low power matched filter LSI; partial correlation structure; power consumption; spreading code synchronization; switched current matched filter; synchronization channel; synchronization error probability; wideband spread spectrum communication systems; Degradation; Delay; Dynamic range; Energy consumption; Frequency synchronization; Large scale integration; MOSFET circuits; Matched filters; Multiaccess communication; Switches;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on
Conference_Location :
London
Print_ISBN :
0-7803-6463-5
DOI :
10.1109/PIMRC.2000.881565
