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New SAW-convolver demodulation techniques using Costas-Loop synchronization for high-bit-rate CDMA signals

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3 Author(s)
C. Takubo ; Central Res. Lab., Hitachi Ltd., Tokyo, Japan ; M. Hikita ; K. Asai

A new synchronous-demodulation method for high-speed CDMA signal, that combines a SAW convolver with a Costas-Loop circuit has been proposed. In the receiver, synchronization of the received CDMA signal and the LO signal can be carried out independent of the transmitter. A QPSK-CDMA signal of 9 Mbps with 60 Mcps has been clearly demodulated using this method.

Published in:

Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE  (Volume:1 )

Date of Conference:

17-20 Oct. 1999