Title :
The overlay of intelligent FDSS system on N-CDMA system
Author :
Ahmed, Bazil Taha ; Ramn, M.C. ; de Haro Ariet, L.
Author_Institution :
Departamento Sistemas, Senales y Radiocomunicaciones, Univ. Politecnica de Madrid, Spain
Abstract :
The capacity gain of a frequency diversity spread spectrum system (FDSS) overlaid on top of a narrowband code division multiplexing access (N-CDMA) system is estimated. The carrier to interference ratios (CIR) of both the FDSS and N-CDMA systems are evaluated. It is assumed that the base stations of both systems are unilocated and that the power control of the uplink and downlink of both systems is imperfect. The number of the FDSS users that can be overlaid on the N-CDMA system is 140 low bit rate users (9.6 kbit/sec.) or 11 data users (144 kbit/sec.).
Keywords :
channel capacity; code division multiple access; diversity reception; mobile radio; power control; spread spectrum communication; telecommunication control; 144 kbit/s; 9.6 kbit/s; CIR; N-CDMA system; capacity gain; carrier to interference ratio; downlink; frequency diversity spread spectrum system; imperfect power control; intelligent FDSS system; narrowband code division multiplexing access system; unilocated base stations; uplink; Base stations; Code division multiplexing; Downlink; Frequency diversity; Frequency estimation; Intelligent systems; Interference; Narrowband; Power control; Spread spectrum communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on
Print_ISBN :
0-7803-7589-0
DOI :
10.1109/PIMRC.2002.1047327
