Title :
New high-performance SAW convolvers and their fundamental experiments for high-bit-rate CDMA communications system
Author :
Hikita, M. ; Takubo, C. ; Asai, K.
Author_Institution :
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
Abstract :
New SAW-convolver structures with high-performance characteristics were proposed. Strong piezoelectric substrates which provide high-conversion efficiencies can be used. Fundamental experiments showed their complete temperature-compensation effects unrelated to TCDs of the substrates and applicabilities of high-bit-rate CDMA transmissions with more than several Mbps
Keywords :
code division multiple access; surface acoustic wave convolution; CDMA communications system; SAW convolver; TCD; conversion efficiency; piezoelectric substrate; temperature compensation; Binary phase shift keying; Communication switching; Convolvers; Digital signal processing; Matched filters; Multiaccess communication; Quadrature phase shift keying; Substrates; Surface acoustic waves; Temperature;
Conference_Titel :
Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-4153-8
DOI :
10.1109/ULTSYM.1997.663029
