Cryptographic digital signal transceiver method and apparatus

Details Cryptographic digital signal transceiver method and apparatus Cryptographic digital signal transceiver method and apparatus

H - Electricity

04

K

340/70

H04K 1/00 (2006.01)

Patent

CA 1256178

CRYPTOGRAPHIC DIGITAL SIGNAL TRANSCEIVER METHOD AND APPARATUS ABSTRACT OF THE DISCLOSURE Hybrid subband coding and decoding (using different encoding/decoding algorithms in at least one subband channel) and subband time delay compensation at a point of maximum digital bandwidth compression are effected so as to reduce required DSP on-chip memory requirements. At the same time a special digital signal format is employed so as to provide enhanced cryptographic synchronization and selective signalling ability within a cryptographic digital signal transceiver. The ability to successfully accomplish late entry (or to re-establish synchronization once lost) into an ongoing received message is provided.

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