Title :
Biorthogonal wavelets for waveform coding in BPSK and QPSK systems
Author :
Rao, Sathyanarayan S. ; Lyall, Michael J. ; Gandhi, Prashant P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Villanova Univ., PA, USA
Abstract :
The authors consider the use of biorthogonal wavelets for baseband waveform coding in traditional BPSK and and PSK digital communication systems. Biorthogonal wavelets can be designed to give better spectral characteristics than orthogonal wavelets. Numerical results for power bandwidth and bandwidth efficiency are given as evidence. A new configuration for the receiver is also presented, where the traditional matched filter is replaced by a filter based on biorthogonal waveforms. The proposed codec is shown to conserve bandwidth at the expense of bit error rate
Keywords :
digital communication systems; encoding; filtering and prediction theory; phase shift keying; wavelet transforms; BPSK system; QPSK system; bandwidth conservation; bandwidth efficiency; baseband waveform coding; biorthogonal wavelets; codec; digital communication systems; filter banks; matched filter; power bandwidth; receiver; spectral characteristics; Bandwidth; Baseband; Binary phase shift keying; Codecs; Digital communication; Filters; Frequency; Interference constraints; Intersymbol interference; Quadrature phase shift keying;
Conference_Titel :
System Theory, 1994., Proceedings of the 26th Southeastern Symposium on
Conference_Location :
Athens, OH
Print_ISBN :
0-8186-5320-5
DOI :
10.1109/SSST.1994.287808
