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11.发明申请METHOD AND APPARATUS FOR PROCESSING A RECEIVED SIGNAL IN A COMMUNICATIONS SYSTEM 审中-公开在通信系统中处理接收信号的方法和装置
公开(公告)号：WO0245288A3
公开(公告)日：2003-01-30
申请号：PCT/US0143619
申请日：2001-11-20
Applicant: QUALCOMM INC
Inventor： EASTON KENNETH D , BLACK PETER J
IPC: H04B1/707 , H04B1/709 , H04B1/7093 , H04Q7/38
CPC classification number: H04B1/707 , H04B1/709 , H04B2001/70935
Abstract: A receiver unit includes a first buffer that receives and stores digitized samples at a particular sample rate and a data processor that retrieves segments of digitized samples from the first buffer and processes the retrieved segments with a particular set of parameters values. The data processor is operated based on a processing clock having a frequency that is (e.g., then or more times) higher than the sample rate. Multiple instances of the received signal can be processed by retrieving and processing multiple segments of digitized samples from the first buffer. the receiver unit typically further includes a receiver that receives and processes a transmitted signal to provide the digitized samples and a controller that dispatches tasks for the data processor. The data processor can be designed to include a correlator, a symbol demodulation and combiner, a first accumulator, and a second buffer, or a combination thereof. The correlator despreads the retrieved segments of digitized samples with corresponding segments of PN despreading sequences to provide correlated samples, which are further processed by the symbol demodulation and combiner to provide processed symbols. The second buffer stores the processed symbols, and can be designed to provide de-interleaving of the processed symbols.
Abstract translation: 接收器单元包括以特定采样率接收和存储数字化样本的第一缓冲器，以及从第一缓冲器检索数字化采样的段并且使用特定参数值集处理检索的段的数据处理器。 数据处理器基于具有比采样率高的（例如，或多次）的频率的处理时钟来操作。 可以通过从第一缓冲器检索和处理数字化样本的多个部分来处理接收信号的多个实例。 接收器单元通常还包括接收和处理发射信号以提供数字化样本的接收机以及为数据处理器分派任务的控制器。 数据处理器可以被设计为包括相关器，符号解调和组合器，第一累加器和第二缓冲器，或其组合。 相关器对所取回的数字化样本段进行解扩，以对应的解扩序列段进行解扩，以提供相关样本，由符号解调和组合器进一步处理，以提供处理后的符号。 第二缓冲器存储经处理的符号，并且可以被设计为提供经处理符号的解交织。
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公开(公告)号：DE60040145D1
公开(公告)日：2008-10-16
申请号：DE60040145
申请日：2000-04-21
Applicant: QUALCOMM INC
Inventor： LING FUNYUN , BLACK PETER J , EASTON KENNETH D
IPC: H04B1/7075 , H04L27/233 , H04B1/707 , H04B1/709 , H04L25/02 , H04L27/00
Abstract: Coherent detection of high-speed digital wireless communications becomes more difficult when the frequencies of the transmitter and receiver oscillators do not coincide. A frequency-locked loop may be used to characterize this frequency offset by processing the samples received on a pilot channel. Rather than using the offset information thus derived to correct the frequency of the received signal, the invention realizes a considerable computational savings by applying a frequency correction to the despread pilot samples instead.
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公开(公告)号：MY117766A
公开(公告)日：2004-08-30
申请号：MYPI9702780
申请日：1997-06-20
Applicant: QUALCOMM INC
Inventor： EASTON KENNETH D , BLACK PETER J
IPC: H03H17/06
Abstract: THE FINITE IMPULSE RESPONSE (FIR) FILTER IS IMPLEMENTED AS A TABLE USING READ-ONLY MEMORY (ROM). THE FIR FILTER TABLE STORES A PRE-CALCULATED OUTPUT FILTER VALUE FOR EACH PERMISSIBLE COMBINATION OF INPUT VALUES TO BE FILTERED. STREAMS OF INPUT VALUES ARE SUCCESSIVELY SHIFTED INTO THE TABLE AND CORRESPONDING OUTPUT VALUES ARE SUCCESSIVELY OUTPUT. IN AN EXEMPLARY IMPLEMENTATION, THE FIR FILTER IS EMPLOYED WITHIN A DIGITAL CELLULAR TELEPHONE FOR USE IN SMOOTHING A DIGITAL SIGNAL TO BE TRANSMITTED. THE SIZE OF THE REQUIRED FIR FILTER TABLE IS MINIMIZED BY EXPLOITING CONSTRAINTS IMPOSED UPON THE SIGNAL TO BE FILTERED AND BY EXPLOITING LINEARITY AND SYMMETRY WITHIN THE FILTER ITSELF. MORE SPECIFICALLY, THE TELEPHONE EMPLOYS A DATA BURST RANDOMIZER TO PROVIDE A DATA SIGNAL COMPOSED OF SEQUENCES OF NULL OR 0 VALUES AND SEQUENCES OF ANTIPODAL VALUES (+1''S AND -1''S). HENCE, THE PERMISSIBLE INPUT COMBINATIONS FOR THE FIR FILTER INCLUDE ONLY PATTERNS CONTAINING EITHER ALL ANTIPODAL SIGNALS, ALL NULL SIGNALS, LEADING ANTIPODAL SIGNALS FOLLOWED BY TRAILING NULL SIGNALS, OR LEADING NULL SIGNALS FOLLOWED BY TRAILING ANTIPODAL SIGNALS. THE FIR FILTER LOOK UP IS CONFIGURED TO EXPLOIT THESE LIMITATIONS ON THE INPUT STREAMS YIELDING A LOOK UP TABLE HAVING RELATIVELY FEW ENTRIES. METHOD AND APPARATUS IMPLEMENTATIONS ARE DISCLOSED.FIGURE 5
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公开(公告)号：FI114123B
公开(公告)日：2004-08-13
申请号：FI962258
申请日：1996-05-29
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：SI0732013T1
公开(公告)日：2004-06-30
申请号：SI9530671
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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Patent Agency Ranking
公开(公告)号：PT732013E
公开(公告)日：2003-11-28
申请号：PT95937306
申请日：1995-09-27
Applicant: QUALCOMM INC
Inventor： 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. 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：DK0732013T3
公开(公告)日：2003-09-15
申请号：DK95937306
申请日：1995-09-27
Applicant: QUALCOMM INC
Inventor： 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. 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：CA2430128A1
公开(公告)日：2002-06-06
申请号：CA2430128
申请日：2001-11-20
Applicant: QUALCOMM INC
Inventor： EASTON KENNETH D , BLACK PETER J
IPC: H04B1/707 , H04B1/709 , H04B1/7093 , H04Q7/38
Abstract: A receiver unit includes a first buffer that receives and stores digitized samples at a particular sample rate and a data processor that retrieves segments of digitized samples from the first buffer and processes the retrieved segments with a particular set of parameters values. The data processor is operated based on a processing clock having a frequency that is (e.g., then or more times) higher than the sample rate. Multiple instances of the received signal can be processed by retrieving and processing multiple segments of digitized samples from the first buffer. the receiver unit typically further includes a receiver that receives and processes a transmitted signal to provide the digitized samples and a controller that dispatches tasks for the data processor. The data processor can be designed to include a correlator, a symbol demodulation and combiner, a first accumulator, and a second buffer, or a combination thereof. The correlator despreads the retrieved segments of digitized samples with corresponding segments of PN despreading sequences to provide correlated samples, which are further processed by the symbol demodulation and combiner to provide processed symbols. The second buffer stores the processed symbols, and can be designed to provide de-interleaving of the processed symbols.
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公开(公告)号：BR0009922A
公开(公告)日：2002-04-09
申请号：BR0009922
申请日：2000-04-21
Applicant: QUALCOMM INC
Inventor： LING FUNYUN , BLACK PETER J , EASTON KENNETH D
IPC: H04B1/7075 , H04B1/707 , H04B1/709 , H04L27/00 , H04L27/233 , H04L25/02
Abstract: Coherent detection of high-speed digital wireless communications becomes more difficult when the frequencies of the transmitter and receiver oscillators do not coincide. A frequency-locked loop may be used to characterize this frequency offset by processing the samples received on a pilot channel. Rather than using the offset information thus derived to correct the frequency of the received signal, the invention realizes a considerable computational savings by applying a frequency correction to the despread pilot samples instead.
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公开(公告)号：HK1038466A1
公开(公告)日：2002-03-15
申请号：HK01109186
申请日：2001-12-28
Applicant: QUALCOMM INC
Inventor： EASTON KENNETH D , NEUFELD ARTHUR J
IPC: H04B7/26 , H04B1/7117 , H04W52/02 , H04Q
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