Title :
A direct sequence spread wavelet modulation method
Author :
Xianghong, Tang ; Huang Xiongjun ; Hengli, Yue
Author_Institution :
Sch. of Commun. Eng., Hangzhou Dianzi Univ., China
Abstract :
Since wavelet transform has good time frequency property and orthogonality property, wavelet transform be used by communication as modulation waveforms. Based on the characterization of the wavelet modulation (WM) communication system and direct sequence spread spectrum communication (DS), this paper propose a novel wavelet modulation method, which is called direct sequence wavelet modulation (DS-WM). Making use of the joint estimation strategy, the performances of DS-WM are analyzed in three channel models. The experiment results show that the DS-WM has better performance than WM and the joint estimation strategy improves the bit error rate (BER) performance of DS-WM system.
Keywords :
code division multiple access; discrete wavelet transforms; error statistics; modulation; spread spectrum communication; time-frequency analysis; BER; DS-WM; bit error rate; direct sequence spread spectrum communication; direct sequence wavelet modulation method; joint estimation strategy; orthogonality property; time frequency property; wavelet transform; AWGN; Bit error rate; Discrete wavelet transforms; Fading; Frequency; Gaussian noise; Spread spectrum communication; Transmitters; Wavelet analysis; Wavelet transforms; direct sequence spread spectrum; wavelet modulation; wavelet transform;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9128-4
DOI :
10.1109/MAPE.2005.1618083
