Title :
Design of a high-speed MC-CDMA system for broadband mobile radio communications
Author :
Madhukumar, A.S. ; Chin, Francois
Author_Institution :
Centre for Wireless Commun., Singapore
Abstract :
This paper is concerned with a new method to enhance the bandwidth efficiency of an MC-CDMA system by using a residue number based representation for information symbols. The residues are mapped into a set of orthogonal sequences and are transmitted in parallel. To increase the data rate further, a modified residue representation scheme is used with significantly lesser number of orthogonal sequences. A multicarrier modulation scheme is used for both transmission and reception of residue channels. The issues involved in the design of an enhanced RNS based MC-CDMA architecture is discussed and the performance of the system is evaluated in a frequency selective Rayleigh fading channel via extensive simulations
Keywords :
Rayleigh channels; binary sequences; broadband networks; code division multiple access; mobile radio; modulation; residue number systems; time-varying channels; MC-CDMA system; bandwidth efficiency; broadband mobile radio; frequency selective Rayleigh fading channel; information symbols; multicarrier modulation; orthogonal sequences; performance; residue number based representation; simulations; Bit error rate; Bit rate; Broadband communication; Fading; Frequency; Land mobile radio; Mobile communication; Multiaccess communication; Multicarrier code division multiple access; Narrowband;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2001 12th IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7244-1
DOI :
10.1109/PIMRC.2001.965310
