公开(公告)号：HUE048762T2

公开(公告)日：2020-08-28

申请号：HUE03781526

申请日：2003-10-24

Applicant: QUALCOMM INC

Inventor： BLACK PETER ,  MA JUN ,  ESTEVES EDUARDO ,  LOTT CHRISTOPHER GERARD

IPC: H04L1/18 ,  H04L1/00 ,  H04L1/08 ,  H04L1/16

公开(公告)号：ES2464890T3

公开(公告)日：2014-06-04

申请号：ES06787908

申请日：2006-07-19

Applicant: QUALCOMM INC

Inventor： BLACK PETER ,  ATTAR RASHID ,  REZAIIFAR RAMIN ,  AGASHE PARAG ,  FAN MINGXI ,  RIMINI ROBERTO ,  MA JUN

IPC: H04B7/26

Abstract: Un procedimiento que comprende: asignar una máscara de código largo (LCM) a un canal de información asociado con una pluralidad de portadoras de enlace directo, la pluralidad de portadoras de enlace directo para transmitir datos en modo multi portadora desde una estación base o red de acceso a un terminal de acceso; y multiplexar el canal de información en una portadora de enlace inverso transmitida desde el terminal de acceso a la estación base o a la red de acceso.

公开(公告)号：AT553548T

公开(公告)日：2012-04-15

申请号：AT00950521

申请日：2000-07-20

Applicant: QUALCOMM INC

Inventor： BLACK PETER

IPC: H04B7/005 ,  H04B7/26 ,  H04B17/00

Abstract: Method and apparatus for estimating reverse link loading in a wireless communication system. In the present invention, the reverse link signals are passed through notch filters such that no energy (or energy of negligible amounts) is transmitted in these areas of the reverse link frequency band. At the base station, the unloaded cell energy is estimated by measuring the energy in the areas where the reverse link signals are notched. The in band energy is then compared to the energy in the notched portions of the reverse link band and based on this ratio cell capacity is determined.

公开(公告)号：AT456235T

公开(公告)日：2010-02-15

申请号：AT06751671

申请日：2006-04-26

Applicant: QUALCOMM INC

Inventor： JAYARAMAN SRIKANT ,  XU HAO ,  NAMGOONG JUNE ,  MANGAN MICHAEL ,  BLACK PETER

IPC: H04L27/26 ,  H04L1/20 ,  H04L5/00

Abstract: A spread-spectrum communication system provides an effective signal-to-noise ratio (SNR) of received orthogonal frequency division multiplex (OFDM) slots in the presence of timing errors. Effective SNR can serve as a diagnostic tool for determining whether there was a timing error when a measured packet error rate (PER) remains high, and a predicted PER from the effective SNR remains low. A loop can use the effective SNR to control a time reference used by an OFDM decoder.

公开(公告)号：AT428285T

公开(公告)日：2009-04-15

申请号：AT02801717

申请日：2002-10-15

Applicant: QUALCOMM INC

Inventor： WU QIANG ,  SINDHUSHAYANA NAGABHUSHANA ,  BLACK PETER ,  VIJAYAN RAJIV ,  ATTAR RASHID

IPC: H04J13/00 ,  H04W36/06 ,  H04B7/04 ,  H04B7/204 ,  H04B7/26 ,  H04L12/56 ,  H04Q1/00 ,  H04W16/24 ,  H04W24/00

Abstract: An apparatus for selecting a best serving sector in a code division multiple access (CDMA) communication system. A comparator compares a plurality of signal levels received from a plurality of active sectors with a signal level of a current serving sector to produce a difference. A delta generator is coupled to the comparator that generates a delta credit for each of the plurality of active sectors based on the difference. An accumulator is coupled to the delta generator and accumulates a plurality of delta credits to produce an accumulated total credit. A best sector identifier that is coupled to the accumulator identifies the best serving sector from the accumulated total credit.

公开(公告)号：AT393495T

公开(公告)日：2008-05-15

申请号：AT00961825

申请日：2000-09-12

Applicant: QUALCOMM INC

Inventor： WU QIANG ,  BLACK PETER ,  SINDHUSHAYNA NAGABHUSHANA

IPC: H04B1/10 ,  H04B17/00 ,  H04L1/00 ,  H04L1/20

Abstract: A system for providing an accurate prediction of a signal-to-interference noise ratio is described. The system includes a first circuit for receiving a signal transmitted across a channel via an external transmitter. A second circuit generates a sequence of estimates of signal-to-interference noise ratio based on the received signal. A third circuit determines a relationship between elements of the sequence of estimates. A fourth circuit employs the relationship to provide a signal-to-interference noise ratio prediction for a subsequently received signal. In the illustrative embodiment, the inventive system further includes a circuit for generating a data rate request message based on the signal-to-noise ratio prediction. A special transmitter transmits the data rate request message to the external transmitter. In the specific embodiment, the relationship between elements of the sequence of estimates is based on an average of the elements of the sequence of estimates. The third circuit includes a bank of filters for computing the average. The bank of filters includes finite impulse response filters. Coefficients of the transfer functions associated with each filter in the bank of filters are tailored for different fading environments. The different fading environments include different Rayleigh fading environments, one environment associated with a rapidly moving system, a second environment associated with a slow moving system, and a third system associated with a system moving at a medium velocity. A selection circuit is connected to each of the filter banks and selects an output from one of the filters in the filter bank. The selected output is associated with a filter having a transfer function most suitable to a current fading environment.

公开(公告)号：AT369669T

公开(公告)日：2007-08-15

申请号：AT00982073

申请日：2000-10-31

Applicant: QUALCOMM INC

Inventor： PADOVANI ROBERTO ,  BLACK PETER ,  SINDHUSHAYANA NAGABHUSHANA

IPC: H04B7/26 ,  H04B1/707 ,  H04J13/00 ,  H04L7/04

Abstract: An apparatus for transmitting pilot references from a plurality of transmission sources, comprises a receiver for receiving, at each transmission source, one or more signals indicative of a time reference for the communication system. The apparatus generates, at each transmission source, a plurality of pilot bursts for a pilot reference; and transmits the plurality of pilot bursts in synchronization with the time reference from each transmission source.

公开(公告)号：AU2002228969B2

公开(公告)日：2006-11-02

申请号：AU2002228969

申请日：2001-12-13

Applicant: QUALCOMM INC

Inventor： MONTOJO JUAN ,  BLACK PETER ,  SINDHUSHAYANA NAGABHUSHANA

IPC: H04L1/24 ,  H04B1/00 ,  H04B1/707 ,  H04B17/00

Abstract: A method and an apparatus for waveform quality measurement are disclosed. An actual signal, representing a waveform channelized both in time and in code is generated by, e.g., an exemplary HDR communication system. Test equipment generates an ideal waveform corresponding to the actual waveform. The test equipment then generates an estimate of offsets between parameters of the actual waveform and the ideal waveform, and the offsets are used to compensate the actual waveform. The test equipment then evaluates various waveform quality measurements utilizing the compensated actual waveform and the corresponding ideal waveform. Definitions of the various waveform quality measurements as well as conceptual and practical examples of processing of the actual waveform and the corresponding ideal waveform by the test equipment are disclosed. The disclosed method and apparatus may be extended to any waveform channelized both in time and in code regardless of the equipment that generated the waveform.

公开(公告)号：BR0011050A

公开(公告)日：2006-06-13

申请号：BR0011050

申请日：2000-06-13

Applicant: QUALCOMM INC

Inventor： BONACCORSO MARIO ,  LING FUNYUN ,  HUSHAYANA NAGABHUSHANA ,  BLACK PETER

IPC: H04B1/7117 ,  H04B1/10 ,  H04B1/707 ,  H04B1/709 ,  H04B7/08

Abstract: An optimum combiner that reduces the amount of interference imposed upon a first base station (102) by transmissions of other base stations within the same communication system. Two antennas (112, 114) are used to receive transmissions within a receiving station (110). A rake receiver is coupled to each antenna (112, 114). By optimally combining the signals that are received by each independent finger of the rake receiver, interference that is correlated between a finger associated with the first antenna (112) and a finger associated with the second antenna (114) can be minimized with respect to the desired signal. Optimum combining requires determination of optimum combining coefficients. A max-ratio combining algorithm may be substituted for the optimal combining algorithm depending upon interference characteristics.

公开(公告)号：BR0116158A

公开(公告)日：2005-04-05

申请号：BR0116158

申请日：2001-12-13

Applicant: QUALCOMM INC

Inventor： MONTOJO JUAN ,  SINDHUSHAYANA NAGABHUSHANA ,  BLACK PETER

IPC: H04B1/00 ,  H04B1/707 ,  H04B17/00 ,  H04J13/00 ,  H04B3/46 ,  H03D3/22

Abstract: A method and an apparatus for waveform quality measurement are disclosed. An actual signal, representing a waveform channelized both in time and in code is generated by, e.g., an exemplary HDR communication system. Test equipment generates an ideal waveform corresponding to the actual waveform. The test equipment then generates an estimate of offsets between parameters of the actual waveform and the ideal waveform, and the offsets are used to compensate the actual waveform. The test equipment then evaluates various waveform quality measurements utilizing the compensated actual waveform and the corresponding ideal waveform. Definitions of the various waveform quality measurements as well as conceptual and practical examples of processing of the actual waveform and the corresponding ideal waveform by the test equipment are disclosed. The disclosed method and apparatus may be extended to any waveform channelized both in time and in code regardless of the equipment that generated the waveform.