FIR Filter of DS-CDMA UWB Modem Transmitter

Kyu-Min KANG; Sang-In CHO; Hui-Chul WON; Sang-Sung CHOI

doi:10.1093/ietcom/e91-b.3.907

Regular Section

FIR Filter of DS-CDMA UWB Modem Transmitter

Kyu-Min KANG, Sang-In CHO, Hui-Chul WON, Sang-Sung CHOI

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Keywords: FIR filter, ternary spreading code, look-up table (LUT), DS-CDMA, UWB transmitter

JOURNAL RESTRICTED ACCESS

2008 Volume E91.B Issue 3 Pages 907-909

DOI https://doi.org/10.1093/ietcom/e91-b.3.907

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Abstract

This letter presents low-complexity digital pulse shaping filter structures of a direct sequence code division multiple access (DS-CDMA) ultra wide-band (UWB) modem transmitter with a ternary spreading code. The proposed finite impulse response (FIR) filter structures using a look-up table (LUT) have the effect of saving the amount of memory by about 50% to 80% in comparison to the conventional FIR filter structures, and consequently are suitable for a high-speed parallel data process.

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