Patents by Inventor Rudolf Ladyzhenskii

Rudolf Ladyzhenskii 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 of quadrature spreading
    Patent number: 7613158
    Abstract: The invention provides a method of quadrature spreading suited for use in a software implementation of a code division multiple access communication (CDMA) system. The method includes providing for a bit of short code, adding a bit of each of N data channels together to obtain a combined channel value (Xin), and performing a spreading operation to obtain a spread channel value.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: November 3, 2009
    Assignee: Indoaust Investments Ltd.
    Inventor: Rudolf Ladyzhenskii
  • Method of updating a shift register
    Patent number: 7433906
    Abstract: There is disclosed a method of updating a pseudo noise code shift retiser in a noise code shift register in a software implemented CDMA system from a current value, including representing a tap polynomial as a tap polynomial binary sequence logically AND-ing the value of a last stage of the current value of the register with each of the bits of the tap polynomial sequence and logically XOR-ing the result of the logical AND operation with the current value of the register.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: October 7, 2008
    Assignee: Indoaust Investments Ltd.
    Inventor: Rudolf Ladyzhenskii
  • Method of quadrature spreading
    Publication number: 20040091020
    Abstract: The invention provides a method of quadrature spreading suited for use in a software implementation of a code division multiple access communication (CDMA) system. The method includes providing for a bit of short code, adding a bit of each of N data channels together to obtain a combined channel value (Xin), and performing a spreading operation to obtain a spread channel value.
    Type: Application
    Filed: November 17, 2003
    Publication date: May 13, 2004
    Inventor: Rudolf Ladyzhenskii
  • Method of updating a shift register
    Publication number: 20040052222
    Abstract: There is disclosed a method of updating a pseudo noise code shift register in a software implemented CDMA system from a current value to a new value, including representing a tap polynomial as a tap polynomial binary sequence logically AND-ing the value of a last stage of the current value of the register with each of the bits of the tap polynomial sequence and logically XOR-ing the result of the logical AND operation with the current value of the register.
    Type: Application
    Filed: October 14, 2003
    Publication date: March 18, 2004
    Inventor: Rudolf Ladyzhenskii