Patents by Inventor Carl M. Pietrzak, Jr.

Carl M. Pietrzak, Jr. 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).

  • Method and apparatus for selecting a digital signal from a plurality of digital signals
    Patent number: 4891812
    Abstract: In a mobile communications system, a plurality of base stations may receive the same signal, whereby the "best" reception may be determined. The plurality of received digital signals are combined to form a majority signal. Each of the received digital signals is compared to the majority signal to estimate the bit-error-rate (BER) of each received signal. If the difference between the highest and lowest BER is less than a predetermined threshold, the majority signal is selected for reception. Conversely, if the BER difference is greater than the predetermined threshold, the received digital signal with the lowest BER is selected for reception. Thus, the signal with the lowest BER is selected to provide the best possible communications.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: January 2, 1990
    Assignee: Motorola, Inc.
    Inventors: Paul M. Bocci, Kevin M. Cutts, Carl M. Pietrzak, Jr.
  • Data detection by statistical analysis
    Patent number: 4710957
    Abstract: A data detector is disclosed wherein a received signal is analyzed to determine its statistical characteristics. These characteristics are compared to a predetermined statistical distribution. If the signal is statistically close to the statistical characteristics of a known signal a detect signal is generated and the received signal is passed for further processing and reception.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: December 1, 1987
    Assignee: Motorola, Inc.
    Inventors: Paul M. Bocci, Carl M. Pietrzak, Jr., Alan L. Wilson
  • Signal selection by statistical comparison
    Patent number: 4710945
    Abstract: A signal selection system is disclosed wherein a plurality of received signals are analyzed to determine their statistical characteristics. These characteristics are compared to a predetermined statistical distribution. The signal that is statistically closest to the statistical characteristics of a known signal is selected for further processing and reception.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: December 1, 1987
    Assignee: Motorola, Inc.
    Inventors: Paul M. Bocci, Carl M. Pietrzak, Jr., Alan L. Wilson