Patents by Inventor Abhay A. Joshi

Abhay A. Joshi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9031166
    Abstract: Systems and methodologies are described that facilitate dynamically allocating demodulation resources of a wideband receiver to provide improved demodulation of simultaneously received signals. Signal-to-noise ratio (SNR) and/or packet error rate (PER) can be measured for the plurality of carriers to determine which demodulators related to the carriers require more resources than others to demodulate signals at a specified signal quality. Where the SNR of a related carrier is high and/or PER is low, the demodulator can require fewer resources than where the SNR of a related carrier is low and/or PER is high. In this regard, the resources are dynamically allocated among the demodulators and reallocated where SNR/PER changes and/or additional resources are made available.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: May 12, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Gregory R. Lie, Abhay A. Joshi, Yu-Chuan G. Lin, Lijun Lin
  • Patent number: 8848771
    Abstract: Systems and methods for simultaneously communicating over multiple air interfaces using a single transceiver are described herein. An input is received at a transceiver. The input has a first signal encoded using a first radio technology and a second signal encoded using a second radio technology. The input is converted from an analog domain to a digital domain. The input is separated into the first signal and the second signal in the digital domain.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: September 30, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Gregory R. Lie, Reza Shahidi, Roland R. Rick, Abhay A. Joshi, Amit Mahajan, Yu-Chuan Lin, Steve C. Ciccarelli
  • Patent number: 8345803
    Abstract: Systems and methodologies are described that facilitate dynamically allocating demodulation resources of a wideband receiver to provide improved demodulation of simultaneously received signals. Signal-to-noise ratio (SNR) and/or packet error rate (PER) can be measured for the plurality of carriers to determine which demodulators related to the carriers require more resources than others to demodulate signals at a specified signal quality. Where the SNR of a related carrier is high and/or PER is low, the demodulator can require fewer resources than where the SNR of a related carrier is low and/or PER is high. In this regard, the resources are dynamically allocated among the demodulators and reallocated where SNR/PER changes and/or additional resources are made available.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: January 1, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Gregory R. Lie, Abhay A. Joshi, Yu-Chuan G. Lin, Lijun Lin
  • Publication number: 20110122972
    Abstract: Systems and methods for simultaneously communicating over multiple air interfaces using a single transceiver are described herein. An input is received at a transceiver. The input has a first signal encoded using a first radio technology and a second signal encoded using a second radio technology. The input is converted from an analog domain to a digital domain. The input is separated into the first signal and the second signal in the digital domain.
    Type: Application
    Filed: May 13, 2010
    Publication date: May 26, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Gregory R. Lie, Reza Shahidi, Roland R. Rick, Abhay A. Joshi, Amit Mahajan, Yu-Chuan Lin, Steve C. Ciccarelli
  • Patent number: 7742447
    Abstract: Techniques to efficiently attempt acquisition of a packet data system (e.g., an IS-856 system). If a terminal has acquired one or more channels in a voice/data system (e.g., an IS-2000 system), then it can attempt acquisition on channels in the packet data system that are co-located with the acquired channels in the voice/data system. Multiple acquisition modes may be used, and on-going acquisition attempts on the co-located channels may be performed using one acquisition mode at a time in order to reduce power consumption. Acquisition attempts may be performed in a “ping-pong” manner to improve the likelihood of acquisition. For a ping-pong search, an acquisition attempt is made on the most recently acquired channel prior to an acquisition attempt on each of the remaining channels. Received signal strength estimates may also be obtained for selected channels and may be used to determine whether or not to attempt acquisition on these channels.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: June 22, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Abhay A. Joshi, James A. Hutchison, Peter J. Black, Simon Turner, Thunyachate Ekvetchavit
  • Publication number: 20100086088
    Abstract: Systems and methodologies are described that facilitate dynamically allocating demodulation resources of a wideband receiver to provide improved demodulation of simultaneously received signals. Signal-to-noise ratio (SNR) and/or packet error rate (PER) can be measured for the plurality of carriers to determine which demodulators related to the carriers require more resources than others to demodulate signals at a specified signal quality. Where the SNR of a related carrier is high and/or PER is low, the demodulator can require fewer resources than where the SNR of a related carrier is low and/or PER is high. In this regard, the resources are dynamically allocated among the demodulators and reallocated where SNR/PER changes and/or additional resources are made available.
    Type: Application
    Filed: October 2, 2008
    Publication date: April 8, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Gregory R. Lie, Abhay A. Joshi, Yu-Chuan G. Lin, Lijun Lin
  • Patent number: 7602840
    Abstract: Systems and techniques to acquire a gated pilot signal by searching for a first gated pilot signal, deriving timing information from the search for the first gated pilot signal, and searching for a second gated pilot signal using the timing information. This can be implemented in a variety of fashions including a receiver with a searcher configured to generate a bit sequence, a correlator configured to correlate a received signal with the bit sequence, and a processor configured to detect a first gated pilot signal as a function of the correlation, derive timing information from the first gated pilot signal, and detect a second gated pilot signal by using the timing information to control the bit sequence generated by the searcher.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: October 13, 2009
    Assignee: QUALCOMM Incorporated
    Inventors: Abhay A. Joshi, Arthur James Neufeld
  • Patent number: 7295857
    Abstract: Techniques to efficiently attempt acquisition of a packet data system (e.g., an IS-856 system). If a terminal has acquired one or more channels in a voice/data system (e.g., an IS-2000 system), then it can attempt acquisition on channels in the packet data system that are co-located with the acquired channels in the voice/data system. Multiple acquisition modes may be used, and on-going acquisition attempts on the co-located channels may be performed using one acquisition mode at a time in order to reduce power consumption. Acquisition attempts may be performed in a “ping-pong” manner to improve the likelihood of acquisition. For a ping-pong search, an acquisition attempt is made on the most recently acquired channel prior to an acquisition attempt on each of the remaining channels. Received signal strength estimates may also be obtained for selected channels and may be used to determine whether or not to attempt acquisition on these channels.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: November 13, 2007
    Assignee: QUALCOMM Incorporated
    Inventors: Abhay A. Joshi, James A. Hutchison, Peter J. Black, Simon Turner, Thunyachate Ekvetchavit
  • Publication number: 20040228308
    Abstract: Systems and techniques to acquire a gated pilot signal by searching for a first gated pilot signal, deriving timing information from the search for the first gated pilot signal, and searching for a second gated pilot signal using the timing information. This can be implemented in a variety of fashions including a receiver with a searcher configured to generate a bit sequence, a correlator configured to correlate a received signal with the bit sequence, and a processor configured to detect a first gated pilot signal as a function of the correlation, derive timing information from the first gated pilot signal, and detect a second gated pilot signal by using the timing information to control the bit sequence generated by the searcher.
    Type: Application
    Filed: June 21, 2004
    Publication date: November 18, 2004
    Inventors: Abhay A. Joshi, Arthur James Neufeld
  • Patent number: 6819931
    Abstract: A method for assigning tracking elements includes sorting a list of potential assignments according to a diversity criterion. In one example, a list of received signal instances is sorted first according to a measure of energy and then sorted again according to the diversity criterion. In a further embodiment, a demodulation element may be labeled available for assignment yet continue to output demodulated symbols in a locked state. Applications to a mobile station of a CDMA system for cellular telephony are discussed.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: November 16, 2004
    Assignee: Qualcomm Incorporated
    Inventors: Messay Amerga, Abhay A. Joshi, Mark Levin
  • Patent number: 6795489
    Abstract: Systems and techniques are disclosed wherein a gated pilot signal can be acquired by searching for a first gated pilot signal, deriving timing information from the search for the first gated pilot signal, and searching for a second gated pilot signal using the timing information. This can be implemented in a variety of fashions including a receiver with a searcher configured to generate a bit sequence, a correlator configured to correlate a received signal with the bit sequence, and a processor configured to detect a first gated pilot signal as a function of the correlation, derive timing information from the first gated pilot signal, and detect a second gated pilot signal by using the timing information to control the bit sequence generated by the searcher. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
    Type: Grant
    Filed: August 9, 2001
    Date of Patent: September 21, 2004
    Assignee: QUALCOMM Inc.
    Inventors: Abhay A. Joshi, Arthur James Neufeld
  • Publication number: 20040087309
    Abstract: Techniques to efficiently attempt acquisition of a packet data system (e.g., an IS-856 system). If a terminal has acquired one or more channels in a voice/data system (e.g., an IS-2000 system), then it can attempt acquisition on channels in the packet data system that are co-located with the acquired channels in the voice/data system. Multiple acquisition modes may be used, and on-going acquisition attempts on the co-located channels may be performed using one acquisition mode at a time in order to reduce power consumption. Acquisition attempts may be performed in a “ping-pong” manner to improve the likelihood of acquisition. For a ping-pong search, an acquisition attempt is made on the most recently acquired channel prior to an acquisition attempt on each of the remaining channels. Received signal strength estimates may also be obtained for selected channels and may be used to determine whether or not to attempt acquisition on these channels.
    Type: Application
    Filed: May 28, 2003
    Publication date: May 6, 2004
    Inventors: Abhay A. Joshi, James A. Hutchison, Peter J. Black, Simon Turner, Thunyachate Ekvetchavit
  • Publication number: 20030031144
    Abstract: Systems and techniques are disclosed wherein a gated pilot signal can be acquired by searching for a first gated pilot signal, deriving timing information from the search for the first gated pilot signal, and searching for a second gated pilot signal using the timing information. This can be implemented in a variety of fashions including a receiver with a searcher configured to generate a bit sequence, a correlator configured to correlate a received signal with the bit sequence, and a processor configured to detect a first gated pilot signal as a function of the correlation, derive timing information from the first gated pilot signal, and detect a second gated pilot signal by using the timing information to control the bit sequence generated by the searcher. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
    Type: Application
    Filed: August 9, 2001
    Publication date: February 13, 2003
    Inventors: Abhay A. Joshi, Arthur James Neufeld
  • Publication number: 20030013457
    Abstract: A method for assigning tracking elements includes sorting a list of potential assignments according to a diversity criterion. In one example, a list of received signal instances is sorted first according to a measure of energy and then sorted again according to the diversity criterion. In a further embodiment, a demodulation element may be labeled available for assignment yet continue to output demodulated symbols in a locked state. Applications to a mobile station of a CDMA system for cellular telephony are discussed.
    Type: Application
    Filed: July 12, 2001
    Publication date: January 16, 2003
    Inventors: Messay Amerga, Abhay A. Joshi, Mark Levin