FIR Filter of DS-CDMA UWB Modem Transmitter

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

Publication
IEICE TRANSACTIONS on Communications   Vol.E91-B   No.3   pp.907-909
Publication Date: 2008/03/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.3.907
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fundamental Theories for Communications
Keyword: 
FIR filter,  ternary spreading code,  look-up table (LUT),  DS-CDMA,  UWB transmitter,  

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Summary: 
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.