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An integrated search processor used in a modem for a spread spectrum communications system buffers receive samples and utilizes a time sliced transform processor operating on successive offsets from the buffer. The search processor autonomously steps through a search as configured by a microprocesso

An integrated search processor used in a modem for a spread spectrum communications system buffers receive samples and utilizes a time sliced transform processor operating on successive offsets from the buffer. The search processor autonomously steps through a search as configured by a microprocessor specified search parameter set, which can include the group of antennas to search over, the starting offset and width of the search window to search over, and the number of Walsh symbols to accumulate results at each offset. The search processor calculates the correlation energy at each offset, and presents a summary report of the best paths found in the search to use for demodulation element reassignment. The search is done in a linear fashion independent of the probability that a signal being searched for was transmitted at any given time.

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[ We claim:] [1.] A method of receiving a signal comprised of a group of spread spectrum signals sharing a common frequency band and isolating a first signal from among said group of spread spectrum signals to determine a signal strength at a path delay time offset from a zero offset reference time

[ We claim:] [1.] A method of receiving a signal comprised of a group of spread spectrum signals sharing a common frequency band and isolating a first signal from among said group of spread spectrum signals to determine a signal strength at a path delay time offset from a zero offset reference time of said first signal wherein said first signal comprises a series of symbols wherein a portion of said series of said symbols are grouped together in a symbol set wherein each symbol in a common symbol set is transmitted at a fixed power level wherein successive symbol sets may be transmitted at a variety of signal levels wherein said variety of signal levels includes a zero level wherein transmission of said first signal is gated off, said method comprising the steps of:searching a first set of call signal samples corresponding to a first symbol set for said first signal at a first offset to produce a first power estimate thereof;searching a second set of call signal samples corresponding to said first symbol set for said first signal at said first offset to produce a second power estimate thereof;summing said first and second power estimates to produce a symbol set power level estimate at said first offset;searching a third set of call signal samples corresponding to a second symbol set for said first signal at a second offset to produce a third power estimate thereof;searching a fourth set of call signal samples corresponding to said second symbol set for said first signal at said second offset to produce a fourth power estimate thereof; andsumming said third and fourth power estimates to produce a symbol set power level estimate at said second offset;wherein said first symbol set and said second symbol set correspond to time contiguous symbol sets and wherein said steps of searching are performed continually.