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Correlation of long sequences by a surface-acoustic-wave convolver, with application to spread-spectrum communication

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2 Author(s)
Morgan, D.P. ; University of Edinburgh, Department of Electrical Engineering, Edinburgh, UK ; Hannah, J.M.

Segments of a long biphase coded waveform were correlated in a surface-acoustic-wave convolver, and the resulting correlation peaks were summed in a recirculation loop. With a 5 MHz chip rate, 250 ¿s of the waveform was integrated, giving an experimental s.n.r. improvement of 36 dB. The application to fast synchronisation in spread-spectrum communication is discussed.

Published in:

Electronics Letters  (Volume:11 ,  Issue: 9 )