Numerical word-length optimization for CDMA demodulator

Author

Kyungtae Han ; Eo, Iksu ; Kim, Kyungsti ; Cho, HanJin

Author_Institution

Electron. & Telecommun. Res. Inst., Taejeon, South Korea

Volume

4

fYear

2001

fDate

6-9 May 2001

Firstpage

290

Abstract

This paper presents search methods to optimize word-length for digital systems. Finding the word-length is tedious work when the variables for optimization are numerous. We have proposed sequential and preplanned searches to find optimum word-length, and compared them in terms of the trials. A comparison for a given optimized point is evaluated. We apply them to word-length optimization for a CDMA demodulator, of which requirement is FER of 0.03. Our results show the sequential and the preplanned search have reduced the trials by the rate of 64% and 89%, respectively compared to a full search to optimize the word-length for the CDMA demodulator design

Keywords

circuit optimisation; code division multiple access; demodulators; CDMA demodulator; FER; demodulator design; numerical word-length optimization; preplanned searches; search methods; Cost function; Demodulation; Digital signal processing; Digital systems; Electronic mail; Hardware; Multiaccess communication; Optimization methods; Search methods; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6685-9

Type

conf

DOI

10.1109/ISCAS.2001.922229

Filename

922229