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

A spread-spectrum-matched-filter apparatus including a code generator, an in-phase-programmable-matched filter, a quadrature-phase-programmable-matched filter, an in-phase-frame-matched filter, a quadrature-phase-frame-matched filter, and a controller. The code generator generates replicas of a pilot-chip-sequence signal and a data-chip-sequence signal, which are used to set the programmable-impulse responses of the in-phase-programmable-matched filter and the quadrature-phase-programmable-matched filter. The programmable-impulse responses are alternately changed between that of the pilot-chip-sequence signal and the data-chip-sequence signal so that the in-phase-programmable-matched filter and the quadrature-phase-programmable-matched filter alternately detect the pilot-spread-spectrum channel and the data-spread-spectrum channel embedded in a received spread-spectrum signal, respectively. The in-phase-frame-matched filter and the quadrature-phase-frame-matched filter detect a despread-pilot-bit-sequence signal and generate a peak-pilot-correlation signal which can be used for timing of the controller as to when to trigger changing the programmable-impulse responses of the programmable-matched filters.

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A spread-spectrum-matched-filter apparatus, for use as part of a spread-spectrum receiver on a received spread-spectrum signal having a pilot-spread-spectrum channel generated from spread-spectrum processing a pilot-bit-sequence signal with a pilot-chip-sequence signal and a data-spread-spectrum cha

A spread-spectrum-matched-filter apparatus, for use as part of a spread-spectrum receiver on a received spread-spectrum signal having a pilot-spread-spectrum channel generated from spread-spectrum processing a pilot-bit-sequence signal with a pilot-chip-sequence signal and a data-spread-spectrum channel generated from spread-spectrum processing a data-bit-sequence signal with a data-chip-sequence signal, the pilot-chip-sequence signal and the data-chip-sequence signal being different from each other, comprising: a code generator for generating a replica of the pilot-chip-sequence signal and a replica of the data-chip-sequence signal; programmable-matched means, coupled to said code generator, responsive to having a programmable-impulse response set from the replica of the pilot-chip-sequence signal generated by said code generator, for correlating the pilot-spread-spectrum channel from the received spread-spectrum signal as a despread-pilot-bit-sequence signal and, responsive to having the programmable-impulse response set from the replica of the data-chip-sequence signal generated by said code generator, for correlating the data-spread-spectrum channel from the received spread-spectrum signal, as a despread data-bit-sequence signal; a frame-matched filter having a frame-impulse response matched to the pilot-bit-sequence signal for correlating the despread-pilot-bit-sequence signal and outputting a peak-pilot-correlation signal in response to the despread-pilot-bit-sequence signal matching the frame-impulse response; and a controller, coupled to said programmable-matched means and said code generator, responsive to the peak-pilot-correlation signal from said frame-matched means, for setting, at a first time delay from the peak-pilot-correlation signal, said programmable-matched means with the replica of the pilot-chip-sequence signal generated by said generator for matching said programmable-matched means to the pilot-chip-sequence signal, and responsive to the peak-pilot-correlation signal, for setting, at a second time delay from the peak-pilot-correlation signal, said programmable-matched means with the replica of the data-chip-sequence signal generated by said code generator for matching said programmable-matched means to the data-chip-sequence signal.