Dedicated message matched filter

Multiplex communications – Wide area network – Packet switching

Patent

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Details

370 19, 455 63, 455303, 375 1, 375 96, H04J 112, H04J 942, H04B 1500

Patent

active

047559837

ABSTRACT:
In order to recover the original audio modulation samples when using a continuous code change, sampled data, spread spectrum waveform structure, a dedicated message matched filter is used to process data from multiple emitters within the same range interval. The dedicated message matched filter is matched to an incoming signal only at the precise time of the message epoch. The matched filter coding corresponding to the arrival time of message epochs as derived from synchronization acquisition circuitry is rapidly switched so that one dedicated message matched filter can be used to process data from multiple users simultaneously.

REFERENCES:
patent: 4164628 (1979-08-01), Ward et al.

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