Patents by Inventor Ramaaswamy Murali

Ramaaswamy Murali 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).

  • Local and wide-area transmissions in a wireless broadcast network
    Patent number: 7881245
    Abstract: To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: February 1, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Rajiv Vijayan, Fuyun Ling, Gordon Kent Walker, Ramaaswamy Murali, Ashok Mantravadi, Anand Subramaniam, Krishnamurthy Viswanathan, legal representative
  • LOCAL AND WIDE-AREA TRANSMISSIONS IN A WIRELESS BROADCAST NETWORK
    Publication number: 20090279471
    Abstract: To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
    Type: Application
    Filed: July 20, 2009
    Publication date: November 12, 2009
    Applicant: QUALCOMM INCORPORATED
    Inventors: Rajiv Vijayan, Fuyun Ling, Gordon Kent Walker, Ramaaswamy Murali, Ashok Mantravadi, Anand Subramaniam, Krishnamurthy Viswanathan