Acoustoelectric convolvers for programmable matched filtering in spread-spectrum systems
- 1 May 1976
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IEEE
- Vol. 64 (5), 756-759
- https://doi.org/10.1109/proc.1976.10206
Abstract
Acoustoelectric convolvers for a spread-spectrum communication application age described with a 100-MHz bandwidth. The use of convolvers as programmable matched filters provides the ability to change the coding waveform from bit-to-bit, thus offering improved multipath performance, security against decoding, and protection against repeat jamming. In this paper, we describe design and performance details of a prototype convolver which processes signals of 10-µs duration with a 100-MHz bandwidth. A dynamic range of 50 dB is obtained, and error signals are 30 dB below the output signal with input signal levels of +14 dBm. A test circuit is described which creates typical spread-spectrum signals in which each bit is encoded into 512 chips and data is encoded by inverting the phase of an entire bit at a data rate of 100 kbits/s.Keywords
This publication has 5 references indexed in Scilit:
- Effect of Electromagnetic Delays and SAW Dispersion in SAW ConvolversPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1974
- Minimizing Multiple Transit Echoes in Surface Wave DevicesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1973
- Surface Acoustoelectric ConvolversPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1973
- A New Broadband Coupling Network for Interdigital Surface Wave TransducersIEEE Transactions on Sonics and Ultrasonics, 1972
- Parametric Interactions of Raleigh WavesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1972