Title :
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
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;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.922229
