公开(公告)号：NO20013839L

公开(公告)日：2001-10-05

申请号：NO20013839

申请日：2001-08-07

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  RIDDLE CHRISTOPHER C ,  SHERMAN TOM

IPC: H04B1/7085 ,  H04B1/707

Abstract: In order to time track an incoming signal, a receiver demodulates a first instance of a signal to produce a first set of energy values corresponding to a set of possible data values of the signal. The receiver also demodulates a second instance of the signal to produce a second set of energy values corresponding to the set of possible data values. The receiver combines the first and the second sets of energy values to determine a combined set of energy values. The receiver determines a first estimate of a most likely transmitted data value based upon the combined set of energy values. The receiver decovers an early set of despread samples of the first instance using a symbol corresponding to the first estimate to produce a first early energy value. The receiver decovers a late set of despread samples of the first instance using the symbol corresponding to the first estimate to produce a first late energy value. Finally, the receiver determines a time offset of the first instance based upon the first early and the first late energy values.

公开(公告)号：CA2362057A1

公开(公告)日：2000-08-10

申请号：CA2362057

申请日：2000-02-08

Applicant: QUALCOMM INC

Inventor： SHERMAN TOM ,  RIDDLE CHRISTOPHER C ,  LEVIN JEFFREY A

IPC: H04B1/7085 ,  H04B1/707

Abstract: In order to time track an incoming signal, a receiver demodulates a first instance of a signal to produce a first set of energy values corresponding t o a set of possible data values of the signal (200, 270). The receiver also demodulates a second instance of the signal to produce a second set of energ y values corresponding to the set of possible data values (208, 272). The receiver combines the first and the second sets of energy values to determin e a combined set of energy values (210, 276). The receiver determines a first estimate of a most likely transmitted data value based upon the combined set of energy values (202, 278). The receiver decovers an early set of despread samples of the first instance using a symbol corresponding to the first estimate to produce a first early energy value. The receiver decovers a late set of despread samples of the first instance using the symbol corresponding to the first estimate to produce a first late energy value (214, 284). Finally, the receiver determines a time offset of the first instance based upon the first early and the first late energy values.

公开(公告)号：DE60027270T2

公开(公告)日：2007-04-12

申请号：DE60027270

申请日：2000-02-08

Applicant: QUALCOMM INC

Inventor： LEVIN A ,  RIDDLE C ,  SHERMAN TOM

IPC: H04B1/7085

Abstract: In order to time track an incoming signal, a receiver demodulates a first instance of a signal to produce a first set of energy values corresponding to a set of possible data values of the signal. The receiver also demodulates a second instance of the signal to produce a second set of energy values corresponding to the set of possible data values. The receiver combines the first and the second sets of energy values to determine a combined set of energy values. The receiver determines a first estimate of a most likely transmitted data value based upon the combined set of energy values. The receiver decovers an early set of despread samples of the first instance using a symbol corresponding to the first estimate to produce a first early energy value. The receiver decovers a late set of despread samples of the first instance using the symbol corresponding to the first estimate to produce a first late energy value. Finally, the receiver determines a time offset of the first instance based upon the first early and the first late energy values.

公开(公告)号：AT323342T

公开(公告)日：2006-04-15

申请号：AT00907220

申请日：2000-02-08

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  RIDDLE CHRISTOPHER C ,  SHERMAN TOM

IPC: H04B1/7085 ,  H04B1/707

Abstract: In order to time track an incoming signal, a receiver demodulates a first instance of a signal to produce a first set of energy values corresponding to a set of possible data values of the signal. The receiver also demodulates a second instance of the signal to produce a second set of energy values corresponding to the set of possible data values. The receiver combines the first and the second sets of energy values to determine a combined set of energy values. The receiver determines a first estimate of a most likely transmitted data value based upon the combined set of energy values. The receiver decovers an early set of despread samples of the first instance using a symbol corresponding to the first estimate to produce a first early energy value. The receiver decovers a late set of despread samples of the first instance using the symbol corresponding to the first estimate to produce a first late energy value. Finally, the receiver determines a time offset of the first instance based upon the first early and the first late energy values.

公开(公告)号：PL349809A1

公开(公告)日：2002-09-09

申请号：PL34980900

申请日：2000-02-08

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  RIDDLE CHRISTOPHER C ,  SHERMAN TOM

IPC: H04B1/7085 ,  H04B1/707

Abstract: In order to time track an incoming signal, a receiver demodulates a first instance of a signal to produce a first set of energy values corresponding to a set of possible data values of the signal. The receiver also demodulates a second instance of the signal to produce a second set of energy values corresponding to the set of possible data values. The receiver combines the first and the second sets of energy values to determine a combined set of energy values. The receiver determines a first estimate of a most likely transmitted data value based upon the combined set of energy values. The receiver decovers an early set of despread samples of the first instance using a symbol corresponding to the first estimate to produce a first early energy value. The receiver decovers a late set of despread samples of the first instance using the symbol corresponding to the first estimate to produce a first late energy value. Finally, the receiver determines a time offset of the first instance based upon the first early and the first late energy values.

公开(公告)号：PL197736B1

公开(公告)日：2008-04-30

申请号：PL34980900

申请日：2000-02-08

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  RIDDLE CHRISTOPHER C ,  SHERMAN TOM

IPC: H04B1/7085

公开(公告)号：ES2260000T3

公开(公告)日：2006-11-01

申请号：ES00907220

申请日：2000-02-08

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  RIDDLE CHRISTOPHER C ,  SHERMAN TOM

IPC: H04B1/7085 ,  H04B1/707

Abstract: Procedimiento para efectuar el seguimiento del tiempo en un receptor inalámbrico, que comprende las etapas siguientes: demodular (208, 270) una primera réplica de una señal para generar un primer grupo de valores de energía correspondiente a un grupo de valores de datos posibles de dicha señal; demodular (200, 272) una segunda réplica de dicha señal para generar un segundo grupo de valores de energía correspondiente a dicho grupo de valores de datos posibles; combinar (210, 276) dicho primer y dicho segundo grupo de valores de energía para determinar un grupo combinado de valores de energía; determinar (212, 278) una primera estimación de un valor de datos con la máxima probabilidad de haber sido transmitido, basándose en dicho grupo combinado de valores de energía; revelar (214, 280) un grupo adelantado de muestras desensanchadas de dicha primera réplica, mediante un símbolo correspondiente a dicha primera estimación, para generar un primer valor de energía adelantado; revelar (214, 280) un grupo atrasado de muestras desensanchadas de dicha primera réplica, mediante dicho símbolo correspondiente a dicha primera estimación, para generar un primer valor de energía atrasado; y determinar (216, 282) la diferencia horaria de dicha primera réplica, basándose en dicho primer valor de energía adelantado y dicho primer valor de energía atrasado.

公开(公告)号：NO20013839A

公开(公告)日：2001-10-05

申请号：NO20013839

申请日：2001-08-07

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  RIDDLE CHRISTOPHER C ,  SHERMAN TOM

IPC: H04B1/7085 ,  H04B1/707

CPC classification number: H04B1/7085

公开(公告)号：NO323718B1

公开(公告)日：2007-06-25

申请号：NO20013839

申请日：2001-08-07

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  RIDDLE CHRISTOPHER C ,  SHERMAN TOM

IPC: H04B1/7085

Abstract: In order to time track an incoming signal, a receiver demodulates a first instance of a signal to produce a first set of energy values corresponding to a set of possible data values of the signal. The receiver also demodulates a second instance of the signal to produce a second set of energy values corresponding to the set of possible data values. The receiver combines the first and the second sets of energy values to determine a combined set of energy values. The receiver determines a first estimate of a most likely transmitted data value based upon the combined set of energy values. The receiver decovers an early set of despread samples of the first instance using a symbol corresponding to the first estimate to produce a first early energy value. The receiver decovers a late set of despread samples of the first instance using the symbol corresponding to the first estimate to produce a first late energy value. Finally, the receiver determines a time offset of the first instance based upon the first early and the first late energy values.

公开(公告)号：HU224301B1

公开(公告)日：2005-07-28

申请号：HU0200122

申请日：2000-02-08

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  RIDDLE CHRISTOPHER C ,  SHERMAN TOM

IPC: H04B1/7085 ,  H04B1/707

Abstract: In order to time track an incoming signal, a receiver demodulates a first instance of a signal to produce a first set of energy values corresponding to a set of possible data values of the signal. The receiver also demodulates a second instance of the signal to produce a second set of energy values corresponding to the set of possible data values. The receiver combines the first and the second sets of energy values to determine a combined set of energy values. The receiver determines a first estimate of a most likely transmitted data value based upon the combined set of energy values. The receiver decovers an early set of despread samples of the first instance using a symbol corresponding to the first estimate to produce a first early energy value. The receiver decovers a late set of despread samples of the first instance using the symbol corresponding to the first estimate to produce a first late energy value. Finally, the receiver determines a time offset of the first instance based upon the first early and the first late energy values.