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A spread-spectrum-matched-filter apparatus including a code generator, an in-phase-symbol-matched filter, a quadrature-phase-symbol-matched filter, an in-phase-frame-matched filter, a quadrature-phase-frame-matched filter, and a controller. The code generator generates replicas of a chip-sequence si

A spread-spectrum-matched-filter apparatus including a code generator, an in-phase-symbol-matched filter, a quadrature-phase-symbol-matched filter, an in-phase-frame-matched filter, a quadrature-phase-frame-matched filter, and a controller. The code generator generates replicas of a chip-sequence signal, which are used to set the symbol-impulse responses of the in-phase-symbol-matched filter and the quadrature-phase-symbol-matched filter. The in-phase-frame-matched filter and the quadrature-phase-frame-matched filter detect a despread-header-symbol-sequence signal and generate a maximum output signal which may be used as a data-start signal or for synchronizing the timing of the controller as to when to trigger sampling of the A/D converter, the output of the symbol-matched filters, detection of the data-symbol-sequence signal and other time-dependent processes.

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1. A spread-spectrum-matched-filter apparatus, for use as part of a spread-spectrum receiver on a received-spread-spectrum signal having a plurality of packets, with each packet of said plurality of packets generated from spread-spectrum processing a header-symbol-sequence signal with a chip-sequenc

1. A spread-spectrum-matched-filter apparatus, for use as part of a spread-spectrum receiver on a received-spread-spectrum signal having a plurality of packets, with each packet of said plurality of packets generated from spread-spectrum processing a header-symbol-sequence signal with a chip-sequence signal and from spread-spectrum processing a data-symbol-sequence signal with the chip-sequence signal, comprising:code means for generating a replica of the chip-sequence signal; symbol-matched means, responsive to having a symbol-impulse response set from the replica of the chip-sequence signal, for filtering from the received-spread-spectrum signal, a header portion of the packet, to output a despread-header-symbol-sequence signal and, for filtering from the received-spread-spectrum signal, a data portion of the packet to output a despread-data-symbol-sequence signal; frame-matched means having a frame-impulse response matched to the header-symbol-sequence signal for filtering the despread-header-symbol-sequence signal and for generating a start-data signal in response to the despread-header-symbol-sequence signal matching the frame-impulse response; and control means, coupled to said symbol-matched means and said code means, responsive to the start-data signal, for setting said symbol-matched means with a replica of a data-chip-sequence signal for matching said symbol-matched means to the data-chip-sequence signal.