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公开(公告)号：AU1908900A
公开(公告)日：2000-05-22
申请号：AU1908900
申请日：1999-11-04
Applicant: QUALCOMM INC
Inventor： ULMER ELISHA J , STEIN JEREMY M
Abstract: A method and apparatus for normalizing a plurality of state-metric registers in a decoder using a trellis. The method includes determining an approximate minimum of respective state-metric values stored in the plurality of state-metric registers, and subtracting the approximate minimum from the values. Determining the approximate minimum preferably includes determining the minimum of a predetermined number of most significant bits in the plurality of state-metric registers.
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52.发明专利
公开(公告)号：AU8698698A
公开(公告)日：1999-03-01
申请号：AU8698698
申请日：1998-08-07
Applicant: QUALCOMM INC
Inventor： STEIN JEREMY M
IPC: H03M13/01 , H03M13/09 , H03M13/35 , H03M13/41 , H04L1/00 , H04L1/08 , H04L25/02 , H04L25/03 , H04L29/08 , H03M13/00
Abstract: In an apparatus (200) for determining the rate of received data in a variable rate communication system, a decoder (230) decodes each frame of encoded data in a received signal at each possible data rate. The decoded data is processed by a cyclic redundancy check (CRC) element (240) to produce CRC bits. The data is reencoded and correlated by a correlator (234) with the received encoded data to produce a set of normalized correlation metrics. The decoded data may also be input to a Yamamoto detector (248) to Yamamoto quality metrics. Each operation is performed for each possible data rate. The normalized correlation metric for each rate is calculated from a correlation value and a constant computer for the rate. The correlation value is determined from a correlation of the demodulated soft frame symbols and the re-encoded frame. The highest normalized correlation metric is selected and the CRC bit for this data rate is checked. If the CRC checks, this data rate is indicated as the received data rate. Otherwise, the next highest normalized correlation metric is selected and the process continues. If no CRC checks, an erasure is indicated.
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53.发明专利
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54.发明专利
公开(公告)号：ZA9807149B
公开(公告)日：1999-02-09
申请号：ZA9807149
申请日：1998-08-07
Applicant: QUALCOMM INC
Inventor： STEIN JEREMY M
IPC: H03M13/01 , H03M13/09 , H03M13/35 , H03M13/41 , H04L1/00 , H04L1/08 , H04L25/02 , H04L25/03 , H04L29/08 , H04L , G06F , H04B , H04M
CPC classification number: H04L25/0262 , H03M13/09 , H03M13/35 , H04L1/0046 , H04L1/0054 , H04L1/0057 , H04L1/0061 , H04L1/0065 , H04L1/0068 , H04L1/0071 , H04L1/08 , H04L1/208
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公开(公告)号：CA2284638A1
公开(公告)日：1998-10-01
申请号：CA2284638
申请日：1998-03-20
Applicant: QUALCOMM INC
Inventor： BAR-DAVID AYAL , STEIN JEREMY M
Abstract: A method and apparatus for decoding a frame of multi-rate encoded digital data which contains redundant information provided to validate the decoding operation. A frame of data is received which contains information bits and cyclic redundancy check (CRC) bits. In accordance with the invention, the received frame is decoded and a check is conducted to determine whether the CRC bits correspond correctly for the decoded information bits. If the decoded frame passes the CRC test process, the decoded frame is provided to the user. However, if the decoded frame does not pass the CRC test, then at least one additional decoding process is performed on the received frame. In the first exemplary embodiment of the present invention, on a failure of the CRC check, the data is decoded using a trellis decoder (224) and the data that yields the next most likely path through the trellis is selected. In a second illustrative embodiment, if the CRC test fails, the trellis decoder (224) then identifies all paths having metrics within a predetermined threshold of a metric associated with the optimal path through the trellis. The CRC test is then performed on the decoded frame with respect to the suboptimal paths (starting with the most likely path). If any of these paths pass the CRC check, the information bits are output by the decoder (224). If not, an error is declared.
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Patent Agency Ranking56.发明专利
公开(公告)号：AU2002359343B2
公开(公告)日：2008-02-21
申请号：AU2002359343
申请日：2002-11-01
Applicant: QUALCOMM INC
Inventor： FERNANDEZ-CORBATION IVAN , RICK ROLAND R , STEIN JEREMY M , AMERGA MESSAY
IPC: G01S1/00 , G01S5/02 , G01S19/29 , G01S19/30 , H04B1/7075 , H04B1/7117 , H04Q7/34 , H04Q7/38
Abstract: A parameter estimator for estimating one or more parameter(s) from a signal is described. A correlation function is derived from the signal, and the correlation function analyzed to determine if one or more first peak(s) are present, and, if so, distinguishable from the sidelobe(s) of a second peak. If the one or more first peak(s) are present and distinguishable from the sidelobe(s) of the second peak, the one or more parameter(s) are estimated from the one or more first peak(s). If the one or more first peak(s) are not present, or, if present, are not distinguishable from the sidelobe(s) of the second peak, the one or more parameter(s) are estimated from the second peak. The parameter estimator may be employed in a subscriber station to estimate a parameter such as the time of arrival of one or more base station or sector pilot signals in a wireless communication system. This information may be utilized in an overall advanced forward link trilateration (AFLT) process for estimating the location of the subscriber station.
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公开(公告)号：CA2284638C
公开(公告)日：2007-07-24
申请号：CA2284638
申请日：1998-03-20
Applicant: QUALCOMM INC
Inventor： STEIN JEREMY M , BAR-DAVID AYAL
Abstract: A method and apparatus for decoding a frame of multi-rate encoded digital data which contains redundant information provided to validate the decoding operation. A frame of data is received which contains information bits and cyclic redundancy check (CRC) bits. In accordance with the invention, the received frame is decoded and a check is conducted to determine whether the CRC bits correspond correctly for the decoded information bits. If the decoded frame passes the CRC test process, the decoded frame is provided to the user. However, if the decoded frame does not pass the CRC test, then at least one additional decoding process is performed on the received frame. In the first exemplary embodiment of the present invention, on a failure of the CRC check, the data is decoded using a trellis decoder (224) and the data that yields the next most likely path through the trellis is selected. In a second illustrative embodiment, if the CRC test fails, the trellis decoder (224) then identifies all paths having metrics within a predetermined threshold of a metric associated with the optimal path through the trellis. The CRC test is then performed on the decoded frame with respect to the suboptimal paths (starting with the most likely path). If any of these paths pass the CRC check, the informationbits are output by the decoder (224). If not, an error is declared.
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公开(公告)号：MX2007000282A
公开(公告)日：2007-04-02
申请号：MX2007000282
申请日：2005-06-29
Applicant: QUALCOMM INC
Inventor： STEIN JEREMY M , KOLOR SERGIO , GREEN MICHAEL , BRYGER BOAZ E
Abstract: Un metodo para llevar a cabo una transferencia suave incluyendo establecer un primer canal de control a traves de una red entre un primer BSC y un primer BTS; el metodo tambien incluye establecer un segundo canal de control a traves de la red entre un segundo BSC y un segundo BTS; se establece una llamada entre una estacion movil (MS) y el primera BTS, y mientras la llamada continua, una indicacion es enviada al primer BSC de que la MS ha recibido una senal proveniente del segundo BTS; en respuesta a la indicacion, un activador es transportado desde el primer BSC al segundo BTS, y, en respuesta a la recepcion del activador en el segundo BTS, trafico adicional asociado con la llamada es dirigido entre la MS, el segundo BTS, y el primer BSC, sin transportar el trafico adicional a traves del segundo BSC.
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公开(公告)号：AR049838A1
公开(公告)日：2006-09-06
申请号：ARP050102708
申请日：2005-06-29
Applicant: QUALCOMM INC
Inventor： GREEN MICHAEL , BRYGER BOAZ E , STEIN JEREMY M , KOLOR SERGIO
Abstract: Un método para llevar a cabo soft handof (transferencia suave o transparente), que incluye establecer un primer canal de control por medio de la red entre un primer BSC y un primer BTS. El método además incluye establecer un segundo canal de control por medio de la red entre un segundo BSC y un segundo BTS. Se establece una llamada entre una estacion movil (MS) y el primer BTS, y mientras la llamada continua se envía una indicacion al primer BSC que el MS a recibido una senal desde el segundo BTS. En respuesta a la indicacion, se transfiere un disparador desde el primer BSC al segundo BTS, y en respuesta a recibir el disparador en el segundo BTS, se dirige el tráfico asociado adicional con la llamada entre el MS, el segundo BTS, y el primer BSC, sin transferir el tráfico adicional a través del segundo BSC.
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公开(公告)号：BR0309162A
公开(公告)日：2005-04-26
申请号：BR0309162
申请日：2003-04-09
Applicant: QUALCOMM INC
Inventor： RICK ROLAND R , STEIN JEREMY M , AMERGA MESSAY , COBATON IVAN JESUS FERNANDEZ , RISTIC BIRISLAV , BHATIA ASHOK
Abstract: A method and apparatus for calculating a representative measurement from multiple data measurements of signals from cellular base stations, thereby facilitating utilization of a cellular network to determine position of a mobile station even in non-line of sight and/or dynamic fading environments. A method for calculating a representative measurement includes determining a window of time, selecting data measurements within the window, and calculating a representative time of arrival responsive thereto, such as averaging all data measurements within the window. A representative RMSE estimate may be calculated. To determine a window of time all data measurements within a predetermined window from an earliest time of arrival may be selected. Alternatively the window may be determined by sliding over the data measurements. The data measurements may be stored in a database in a mobile station, and the database is updated to include each new measurement.
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