Title :
Analysis of the influence of Walsh-Hadamard code allocation strategies on the performance of multi-carrier CDMA systems in the presence of HPA non-linearities
Author :
Hathi, N. ; Rodrigues, M. ; Darwazeh, I. ; O´Reilly, Jim
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
Abstract :
We investigate the influence of different Walsh-Hadamard (WH) code allocation techniques on the performance of multi-carrier code division multiple access (CDMA) systems in the presence of high power amplifier (HPA) non-linearities. We consider two different multi-carrier CDMA schemes: multi-carrier CDMA (MC-CDMA) and multi-carrier direct sequence CDMA (MC-DS-CDMA) and analyse their performance in terms of total degradation and spectral spreading for different numbers of active users.
Keywords :
Hadamard codes; code division multiple access; mobile radio; multimedia communication; nonlinear distortion; power amplifiers; spread spectrum communication; DS-CDMA; MC-CDMA; Walsh-Hadamard code allocation strategies; high power amplifier nonlinearities; mobile systems; multicarrier CDMA; multicarrier code division multiple access; multimedia services; spectral spreading; wireless systems; Baseband; Binary phase shift keying; Degradation; Educational institutions; Modulation coding; Multiaccess communication; Multicarrier code division multiple access; Peak to average power ratio; Performance analysis; Transmitters;
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.2002.1045240
