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公开(公告)号：AU2003263749C1
公开(公告)日：2009-01-29
申请号：AU2003263749
申请日：2003-06-20
Applicant: QUALCOMM INC
Inventor： FERNANDEZ-CORBATON IVAN JESUS , KADOUS TAMER
IPC: H04B7/005 , H04B7/06 , H04J11/00 , H04J99/00 , H04L1/00 , H04L1/16 , H04L1/20 , H04L12/56 , H04Q1/00 , H04W24/00 , H04W28/22 , H04W52/26
Abstract: Techniques to determine a set of rates for a set of data streams to be transmitted in a multi-channel communication system. A group of transmission channels to be used for each data stream is initially identified. An equivalent system for each group is then defined to have an AWGN (or flat) channel and a spectral efficiency equal to the average spectral efficiency of the transmission channels in the group. A metric for each group is then derived based on the associated equivalent system, e.g., set to the SNR needed by the equivalent system to support the average spectral efficiency. A rate for each data stream is then determined based on the metric associated with the data stream. The rate is deemed to be supported by the communication system if the SNR required to support the data rate by the communication system is less than or equal to the metric.
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公开(公告)号：DE602004014807D1
公开(公告)日：2008-08-14
申请号：DE602004014807
申请日：2004-12-03
Applicant: QUALCOMM INC
IPC: H04W72/08
Abstract: Systems and methods for adaptively allocating resources between a dedicated reference signal and a traffic signal are disclosed. In an exemplary embodiment, a wireless communication system 100 includes a base station 404. The base station 404 includes a receiver 428 that receives a quality metric 432 from a remote station 106. The quality metric 432 indicates the quality of a signal transmitted from the base station 404 and received by the remote station 106. The base station 404 also includes a resource allocation component 434 that uses the quality metric 432 to allocate a resource between the traffic signal 422 and the dedicated reference signal 418. The base station 404 also includes a transmitter 426 that transmits the traffic signal 422 and the dedicated reference signal 418 to the remote station 106.
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公开(公告)号：CA2760491A1
公开(公告)日：2008-07-24
申请号：CA2760491
申请日：2008-01-10
Applicant: QUALCOMM INC
Inventor： BLANZ JOSEF J , FERNANDEZ-CORBATON IVAN JESUS
Abstract: Techniques for signaling power information to facilitate channel quality indicator (CQI) reporting are described. A Node B may send power information that may be used by a UE to determine a power per channelization code, POVSF. In one design, the power information includes a power offset between the power of a data channel, PHSPDSCH, and the power of a pilot channel. The Node B may determine PHSPDSCH based on the power available for the data channel, the number of available channelization codes, and a designated number of channelization codes. The UE may determine POVSF based on the power information from the Node B and the designated number of channelization codes. The UE may estimate at least one SINR of at least one transport block based on POVSF, determine CQI information for the transport block(s) based on the SINR, and send the CQI information to the Node B.
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24.发明专利
公开(公告)号：AU2002215342B2
公开(公告)日：2007-06-28
申请号：AU2002215342
申请日：2001-10-11
Applicant: QUALCOMM INC
Inventor： AGASHE PARAG A , GAAL PETER , FERNANDEZ-CORBATON IVAN JESUS , SOLIMAN SAMIR S , STEIN JEREMY M , VAYANOS ALKINOOS H
Abstract: A system and method for assisting an integrated GPS/wireless terminal unit in acquiring one or more GPS satellite signals from the GPS satellite constellation. The invention includes a method for narrowing the PN-code phase search. That is, by accounting for the variables in geographic location and time delay relative to GPS time, the systems and methods of the present invention generate a narrow code-phase search range that enables the terminal unit to more quickly acquire and track the necessary GPS satellites, and thereby more quickly provide accurate position information to a requesting entity.
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公开(公告)号：BR0312747A
公开(公告)日：2007-06-26
申请号：BR0312747
申请日：2003-07-18
Applicant: QUALCOMM INC
Inventor： JAYARAMAN SRIKANT , FERNANDEZ-CORBATON IVAN JESUS , SMEE JOHN E
Abstract: A method and apparatus for a decision feedback equalizer wherein a correction term is used to compensate for slicer errors, thus avoiding error propagation. Filter coefficients for the equalizer are selected so as to minimize a cost function for the equalizer, including a correction term as a function of the energy of the filter coefficients. The equalizer includes a coefficient generator responsive to the correction term. One embodiment estimates a transmitted symbol from a received sample as a function of Signal-to-Interference and Noise Ratio (SINR) of the received sample. The received sample is quantized and mapped to a region of a grid overlaid on the transmitted symbol constellation. The region may correspond to a symbol estimate value or may be processed further to obtain a symbol estimate value.
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Patent Agency Ranking
公开(公告)号：DE60305916D1
公开(公告)日：2006-07-20
申请号：DE60305916
申请日：2003-06-04
Applicant: QUALCOMM INC
Inventor： SMEE JOHN , FERNANDEZ-CORBATON IVAN JESUS , JAYARAMAN SRIKANT
Abstract: Techniques for selecting either a DFE or an LE for use to equalize a received signal, and for quickly and efficiently determining the coefficients for the selected equalizer. In an embodiment, a method is provided whereby the DFE is initially adapted based on the received signal and a particular adaptive algorithm (e.g., the LMS algorithm) for an initial time period. A quality metric is then determined for an output of the DFE. The DFE is selected for use if the quality metric is better than a threshold value, and the LE is selected otherwise. If the LE is selected, then the initial values for the coefficients of the LE may be derived based on the coefficients of a feed-forward filter and a feedback filter for the DFE, and the LE coefficients may further be adapted for an additional time period prior to its use to equalize the received signal.
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公开(公告)号：AT329438T
公开(公告)日：2006-06-15
申请号：AT03756404
申请日：2003-06-04
Applicant: QUALCOMM INC
Inventor： SMEE JOHN , FERNANDEZ-CORBATON IVAN JESUS , JAYARAMAN SRIKANT
Abstract: Techniques for selecting either a DFE or an LE for use to equalize a received signal, and for quickly and efficiently determining the coefficients for the selected equalizer. In an embodiment, a method is provided whereby the DFE is initially adapted based on the received signal and a particular adaptive algorithm (e.g., the LMS algorithm) for an initial time period. A quality metric is then determined for an output of the DFE. The DFE is selected for use if the quality metric is better than a threshold value, and the LE is selected otherwise. If the LE is selected, then the initial values for the coefficients of the LE may be derived based on the coefficients of a feed-forward filter and a feedback filter for the DFE, and the LE coefficients may further be adapted for an additional time period prior to its use to equalize the received signal.
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公开(公告)号：CA2547494A1
公开(公告)日：2005-06-23
申请号：CA2547494
申请日：2004-12-03
Applicant: QUALCOMM INC
IPC: H04W72/08
Abstract: Systems and methods for adaptively allocating resources between a dedicated reference signal and a traffic signal are disclosed. In an exemplary embodiment, a wireless communication system 100 includes a base station 404. The base station 404 includes a receiver 428 that receives a quality metric 432 from a remote station 106. The quality metric 432 indicates the quality of a signal transmitted from the base station 404 and received by the remote station 106. The base station 404 also includes a resource allocation component 434 that uses the quality metric 432 to allocate a resource betwee n the traffic signal 422 and the dedicated reference signal 418. The base station 404 also includes a transmitter 426 that transmits the traffic signa l 422 and the dedicated reference signal 418 to the remote station 106.
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公开(公告)号：BR0311546A
公开(公告)日：2005-04-12
申请号：BR0311546
申请日：2003-06-04
Applicant: QUALCOMM INC
Inventor： SMEE JOHN , FERNANDEZ-CORBATON IVAN JESUS , JAYARAMAN SRIKANT
Abstract: Techniques for selecting either a DFE or an LE for use to equalize a received signal, and for quickly and efficiently determining the coefficients for the selected equalizer. In an embodiment, a method is provided whereby the DFE is initially adapted based on the received signal and a particular adaptive algorithm (e.g., the LMS algorithm) for an initial time period. A quality metric is then determined for an output of the DFE. The DFE is selected for use if the quality metric is better than a threshold value, and the LE is selected otherwise. If the LE is selected, then the initial values for the coefficients of the LE may be derived based on the coefficients of a feed-forward filter and a feedback filter for the DFE, and the LE coefficients may further be adapted for an additional time period prior to its use to equalize the received signal.
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公开(公告)号：NO20050005L
公开(公告)日：2005-01-17
申请号：NO20050005
申请日：2005-01-03
Applicant: QUALCOMM INC
Inventor： SMEE JOHN E , JAYARAMAN SRIKANT , FERNANDEZ-CORBATON IVAN JESUS
Abstract: Techniques for selecting either a DFE or an LE for use to equalize a received signal, and for quickly and efficiently determining the coefficients for the selected equalizer. In an embodiment, a method is provided whereby the DFE is initially adapted based on the received signal and a particular adaptive algorithm (e.g., the LMS algorithm) for an initial time period. A quality metric is then determined for an output of the DFE. The DFE is selected for use if the quality metric is better than a threshold value, and the LE is selected otherwise. If the LE is selected, then the initial values for the coefficients of the LE may be derived based on the coefficients of a feed-forward filter and a feedback filter for the DFE, and the LE coefficients may further be adapted for an additional time period prior to its use to equalize the received signal.
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