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

Volume

2

fYear

2000

fDate

2000

Firstpage

964

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/PIMRC.2000.881565

Filename

881565