Title :
Cost-effective low-power architecture of vestigial sideband W-CDMA system
Author :
Kwon, Sungwoo ; Kwak, Jaeyoung ; Roh, Dongwook ; Kim, Dongku ; Lee, MoonKey
Author_Institution :
Dept. of Electr. & Comput. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
We propose an architecture of a new frequency-efficient W-CDMA system that saves the spectrum from 36864 MHz to 2.458 MHz to accommodate the IS-95 narrowband CDMA system by using vestigial sideband (VSB) modulation. In addition, we introduce new cost-effective low-power design technique called CSD-CSCF (Canonical Signed Digit-Common Sub-coefficient Common Filter) and common energy calculator to alleviate the additional hardware cost that is needed to accomplish the VSB modulation and to obtain performance identical to that of the double sideband (DSB) system. It is shown that the proposed VSB W-CDMA system has 30% less spectrum than the DSB W-CDMA system and 30.6% less hardware cost than the system neither exploiting CSD-CSCF nor common energy calculator architectures
Keywords :
code division multiple access; fading channels; land mobile radio; low-power electronics; 2.458 to 3.6864 MHz; CSD-CSCF; IS-95 narrowband CDMA system; canonical signed digit-common sub-coefficient common filter; common energy calculator architectures; hardware cost; low-power architecture; low-power design technique; vestigial sideband W-CDMA system; Computer architecture; Costs; Digital modulation; Filters; Frequency; Hardware; Multiaccess communication; Narrowband; Transmitters; Wideband;
Conference_Titel :
ASICs, 2000. AP-ASIC 2000. Proceedings of the Second IEEE Asia Pacific Conference on
Conference_Location :
Cheju
Print_ISBN :
0-7803-6470-8
DOI :
10.1109/APASIC.2000.896954
