Patents by Inventor Roman N. Nemish

Roman N. Nemish 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).

  • Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers
    Patent number: 6703897
    Abstract: A significant part of the cost of a base station in the cellular mobile radio system is the power amplifier. Thus it is desirable to maximise usage of a power amplifier and in particular to gain the best power output from the amplifier or to improve its efficiency. Such power amplifiers, however, must operate within strict spectral boundaries and thus power amplifiers are typically over-specified in order to ensure that the spectral requirements are met. By measuring the output of the amplifier and determining distortion factors and then adaptively adjusting the operating characteristics of the amplifier, the degree of over-specification of the amplifier required may be reduced with consequent cost and environmental savings.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: March 9, 2004
    Assignee: Nortel Networks Limited
    Inventors: Martin J. O'Flaherty, Roman N. Nemish, David M. Tholl, Gordon B. Neilson, Charles E. Norman
  • Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers
    Publication number: 20030117215
    Abstract: A significant part of the cost of a base station in the cellular mobile radio system is the power amplifier. Thus it is desirable to maximise usage of a power amplifier and in particular to gain the best power output from the amplifier or to improve its efficiency. Such power amplifiers, however, must operate within strict spectral boundaries and thus power amplifiers are typically over-specified in order to ensure that the spectral requirements are met. By measuring the output of the amplifier and determining distortion factors and then adaptively adjusting the operating characteristics of the amplifier, the degree of over-specification of the amplifier required may be reduced with consequent cost and environmental savings.
    Type: Application
    Filed: December 26, 2001
    Publication date: June 26, 2003
    Inventors: Martin J. O'Flaherty, Roman N. Nemish, David M. Tholl, Gordon B. Neilson, Charles E. Norman
  • Scalable base station architecture
    Publication number: 20020123365
    Abstract: A highly flexible base station architecture provides extremely flexible sectorization and capacity expansion capabilities. A base transceiver station (BTS) appliance can be interfaced with similar modules to form a higher capacity, sectorized configuration. Each BTS appliance can function as a standalone cell. In addition, multiple BTS appliances can be connected together to create a multi-sector base station in which the BTS appliances share baseband data, facilitating softer handoff. A backhaul interface module concentrates the backhaul and supports distribution and routing of packets from the network to co-located BTS appliances.
    Type: Application
    Filed: December 31, 2000
    Publication date: September 5, 2002
    Inventors: Walter R. Thorson, Roman N. Nemish, Steve Kos, Niall J. Sexton, David J. Westergaard, Alan P. Westfall, Marin Sampaleanu, Fred Volk, Trevor G. Zapach, Kent E. Fisher