Title :
Design and FPGA realization of MC-CDMA system using pseudo chaotic sequence generator
Author :
Velavan, P. ; Santhi, M.
Author_Institution :
Department of electronics and communication engineeringDept. of Electron. & Commun. Eng., Saranathan Coll. of Eng., Trichy, India
Abstract :
A novel chaotic spreading sequences for Multi-carrier code division multiple access (MC-CDMA) system is proposed. DS-CDMA is a type of spread-spectrum communication system in which multiple signal channels occupy the same frequency band, been distinguished by the use of different spreading codes. Implementation of Multi carrier CDMA transmitter and receiver using pseudo chaotic sequences for spreading digital data using Field Programmable Gate Array (FPGA) has been proposed in this paper. The generated pseudo-chaotic sequences are investigated for auto-correlation, cross-correlation and balance properties. The Bit error rate (BER) performance of the system is evaluated in multi-user environment under AWGN channel and reveals that the MC-CDMA system using pseudo-chaotic sequences as spreading sequences significantly outperforms the conventional PN sequences.
Keywords :
AWGN channels; chaotic communication; code division multiple access; error statistics; field programmable gate arrays; pseudonoise codes; radio receivers; radio transmitters; random sequences; spread spectrum communication; AWGN channel; BER; DS-CDMA; FPGA realization; MC-CDMA system; PN sequences; auto-correlation property; bit error rate; cross correlation property; digital data spreading; field programmable gate array; multicarrier CDMA receiver; multicarrier CDMA transmitter; multicarrier code division multiple access system; multiple signal channel; pseudo chaotic sequence generator; spread spectrum communication system; spreading code; Chaotic communication; Generators; Multicarrier code division multiple access; Receivers; Transmitters; FPGA; MC-CDMA; chaotic sequences; pseudo chaotic sequence generator;
Conference_Titel :
Communications and Signal Processing (ICCSP), 2014 International Conference on
Conference_Location :
Melmaruvathur
Print_ISBN :
978-1-4799-3357-0
DOI :
10.1109/ICCSP.2014.6949892
