Title :
Design of a Novel SS (Spread Spectrum) System based on Cooperative Communications
Author :
Kong, Hyung Yun ; Van Khuong, Ho ; Jeong, Hwi Jae ; Lee, Dong-Un
Author_Institution :
Dept. of Electr. Eng., Ulsan Univ.
Abstract :
In this paper, we first propose a novel system that combines multi-code spread spectrum modulation (McM) technique with orthogonal frequency division multiplexing (OFDM) employing quadrature amplitude modulation (QAM). This system provides high data transmission rate without reducing spectral efficiency and overcomes the adverse effects of frequency-selective Rayleigh fading by applying a minimum mean square error (MMSE) equalizer at the receiver. Then we deploy the decode-and-forward cooperative communications protocol in the novel system to allow single-antenna users to obtain the powerful benefits of multi-antenna systems. Monte-Carlo simulations are also performed to evaluate the performance of the proposed system
Keywords :
Monte Carlo methods; OFDM modulation; Rayleigh channels; data communication; decoding; least mean squares methods; quadrature amplitude modulation; spread spectrum communication; MMSE; McM; Monte-Carlo simulation; OFDM; QAM; data transmission; decode-forward cooperative communications protocol; frequency-selective Rayleigh fading; minimum mean square error equalizer; multiantenna systems; multicode spread spectrum modulation technique; orthogonal frequency division multiplexing; quadrature amplitude modulation; receiver; Amplitude modulation; Data communication; Decoding; Equalizers; Mean square error methods; OFDM modulation; Protocols; Quadrature amplitude modulation; Rayleigh channels; Spread spectrum communication;
Conference_Titel :
TENCON 2006. 2006 IEEE Region 10 Conference
Conference_Location :
Hong Kong
Print_ISBN :
1-4244-0548-3
Electronic_ISBN :
1-4244-0549-1
DOI :
10.1109/TENCON.2006.343826
