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71.发明专利
公开(公告)号：CA2337862A1
公开(公告)日：2000-01-27
申请号：CA2337862
申请日：1999-07-15
Applicant: QUALCOMM INC
Inventor： NEUFELD ARTHUR J , EASTON KENNETH D
IPC: H04B7/26 , H04B1/7117 , H04W52/02 , H04Q7/32
Abstract: The present invention is an improved method and circuit for reducing the amount of time a mobile receiver spends in the active phase of a slot in a communications system utilizing a slotted paging mechanism. The invention includes a means to adjust the timing reference of the fingers to compensate for a sleep duration not an integral multiple of the PN sequence period, and a means to adjust the deinterleaver frame reference timing to compensate for a sleep duration not an integral multiple of the frame interval, and a means t o initialize the frequency tracking, gain scaling, and DC bias loops, if any, of the analog receiver chain to minimize the time needed to re-lock these loops .
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公开(公告)号：HK1017523A1
公开(公告)日：1999-11-19
申请号：HK99102321
申请日：1999-05-25
Applicant: QUALCOMM INC
Inventor： ZIV NOAM A , PADOVANI ROBERTO , LEVIN JEFFREY A , EASTON KENNETH D
Abstract: 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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公开(公告)号：BR9608287A
公开(公告)日：1999-06-15
申请号：BR9608287
申请日：1996-05-02
Applicant: QUALCOMM INC
Inventor： ZIV NOAM A , PADOVANI ROBERTO , LEVIN JEFFREY A , EASTON KENNETH D
Abstract: 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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公开(公告)号：NZ312854A
公开(公告)日：1999-01-28
申请号：NZ31285496
申请日：1996-06-18
Applicant: QUALCOMM INC
Inventor： EASTON KENNETH D
IPC: H04B1/7115 , H04B1/7117 , H04B7/26
Abstract: The present invention involves demodulating a signal in a spread spectrum multiple access system employing a pilot on the forward link. The rake receiver separates the signal processing based on the period over which the processing occurs. Symbol rate processing is performed by a single time-shared multiply-accumulate datapath that services multiple finger front ends and a searcher front end. The front ends are dedicated circuits that perform all chip rate processing, producing a data vector and asserting a flag indicating the results are ready to be serviced by the shared datapath. A datapath controller arbitrates use of the datapath between the finger front ends, the searcher front end, and combining functions, configuring the datapath to service them on a first-come, first-serve basis. The controller sequences the datapath through a fixed routine as dictated by the signal processing associated with the block being serviced.
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公开(公告)号：AU699159B2
公开(公告)日：1998-11-26
申请号：AU6145896
申请日：1996-05-02
Applicant: QUALCOMM INC
Inventor： ZIV NOAM A , PADOVANI ROBERTO , LEVIN JEFFREY A , EASTON KENNETH D
Abstract: 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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Patent Agency Ranking
公开(公告)号：ID19872A
公开(公告)日：1998-08-13
申请号：ID961753
申请日：1996-06-20
Applicant: QUALCOMM INC
Inventor： EASTON KENNETH D
IPC: H04B1/7115 , H04B1/7117 , H03D5/00
Abstract: The present invention involves demodulating a signal in a spread spectrum multiple access system employing a pilot on the forward link. The rake receiver separates the signal processing based on the period over which the processing occurs. Symbol rate processing is performed by a single time-shared multiply-accumulate datapath that services multiple finger front ends and a searcher front end. The front ends are dedicated circuits that perform all chip rate processing, producing a data vector and asserting a flag indicating the results are ready to be serviced by the shared datapath. A datapath controller arbitrates use of the datapath between the finger front ends, the searcher front end, and combining functions, configuring the datapath to service them on a first-come, first-serve basis. The controller sequences the datapath through a fixed routine as dictated by the signal processing associated with the block being serviced.
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公开(公告)号：AU6997798A
公开(公告)日：1998-07-30
申请号：AU6997798
申请日：1998-06-04
Applicant: QUALCOMM INC
Inventor： EASTON KENNETH D , LEVIN JEFFREY A
IPC: H04L1/02 , H04B1/707 , H04B7/26 , H04J11/00 , H04J13/00 , H04L27/30 , H04Q7/20 , H04B1/69 , H04J13/02
Abstract: 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. This reduces the searching process related workload of the microprocessor and also reduces the modem costs by allowing a complete channel element modem circuit to be produced in a single IC.
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公开(公告)号：HK1001447A1
公开(公告)日：1998-06-19
申请号：HK98100401
申请日：1998-01-16
Applicant: QUALCOMM INC
Inventor： LEVIN JEFFREY A , EASTON KENNETH D , HINDERLING JURG , BROCK MICHAEL P , WEAVER LINDSAY A JR
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公开(公告)号：BR9506390A
公开(公告)日：1997-09-16
申请号：BR9506390
申请日：1995-09-27
Applicant: QUALCOMM INC
Inventor： EASTON KENNETH D , LEVIN JEFFREY A
Abstract: 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. This reduces the searching process related workload of the microprocessor and also reduces the modem costs by allowing a complete channel element modem circuit to be produced in a single IC.
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公开(公告)号：AU6145896A
公开(公告)日：1996-11-21
申请号：AU6145896
申请日：1996-05-02
Applicant: QUALCOMM INC
Inventor： ZIV NOAM A , PADOVANI ROBERTO , LEVIN JEFFREY A , EASTON KENNETH D
Abstract: 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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