1
Jeffrey H Moy, Terry M Schaffner: Fast hadamard transform within a code division, multiple access communication system. Motorola, Kenneth A Haas, January 5, 1999: US05856935 (48 worldwide citation)

In a receiver (10) of a code division multiple access system, a method of processing a received signal including reading a first and second data item from a first memory (50), at least one of the first and second data items associated with Walsh data; performing a first arithmetic operation on the f ...


2
Terry M Schaffner, Michael D Kotzin, Anthony P Van den Heuvel: Method and apparatus for creating a composite waveform. Motorola, Kevin A Buford, May 23, 1995: US05418813 (41 worldwide citation)

A method and apparatus is provided for creating a composite waveform. This composite waveform is created by coding a plurality of input digital information signals. Subsequently, the plurality of coded input digital information signals are communicated over a communication medium to a digital combin ...


3
Michael M Wang, Fuyun Ling, Terry M Schaffner: Method and apparatus for rate determination in a communication system. Motorola, Richard A Sonnentag, March 2, 1999: US05878098 (37 worldwide citation)

A method of determining a rate associated with a received signal including the steps of detecting the received signal (40); decoding the received signal at a first rate, determining a first path metric associated with the first rate, decoding the received signal at a second rate, and determining a s ...


4
Robert M Harrison, Terry M Schaffner: Apparatus and method for digitally processing signals in a radio frequency communication system. Motorola, Raymond J Warren, Daniel C Crilly, April 11, 1995: US05406629 (22 worldwide citation)

A plurality of input signals are processed (75) using a Hadamard transform (52) to produce a combined Walsh covered parallel sequence which is sampled in time. The time samples are commutated (76) by a switch (53) or multiplexer to form a Walsh covered serial sequence. The Walsh covered serial seque ...


5
Brian K Classon, Terry M Schaffner: Soft output decoder for convolutional codes. Motorola, Brian M Mancini, Randall S Vaas, May 31, 2005: US06901117 (22 worldwide citation)

Decoding signals represented by a trellis of block length N divided into windows of length L includes a step of decoding a forward recursion from a point P that is before the beginning of a window up to the beginning of the window. P is chosen at a sufficient distance from the beginning of the windo ...


6
Brian K Classon, Terry M Schaffner, Vipul A Desai: Soft output decoder for convolutional codes. Motorola, Brian M Mancini, Randall S Vaas, February 15, 2005: US06856657 (14 worldwide citation)

Decoding signals represented by a trellis of block length N divided into windows of length L includes a step of decoding a forward recursion from a point P1 that is before the beginning of a window up to the beginning of the window and decoding a backward recursion from a point P2 that is after the ...


7
Terry M Schaffner: RF chirp signal propagation delay measurement. Digi International, Fogg & Powers, March 10, 2015: US08976060 (2 worldwide citation)

Distance between two radio frequency devices is estimated by receiving a plurality of spread spectrum chirp signals frequency offset from one another, and evaluating the received plurality of spread spectrum chirp signals for relative phase shifts between the plurality of spread spectrum chirp signa ...


8
Theodore A Trost, Terry M Schaffner: Method and apparatus for re-encoding decoded data. Motorola, Sayed Hossain Beladi, June 13, 2000: US06075824 (2 worldwide citation)

A re-encoded history data bits generator (101), in a communication system having a block of convolutionally encoded data bits that are interleaved into a matrix (200), selects, for each of the required number of re-encoded history data bits, a combination of data bits from a sequence of previously d ...


9
Classon Brian K, Terry M Schaffner, Vipuru A Desai, James C Baker, Daniel M Friend: Soft decision output decoder for convolution coding. Motorola, September 28, 2001: JP2001-267937 (1 worldwide citation)

PROBLEM TO BE SOLVED: To provide a soft decision output decoder for convolution coding that decodes a signal expressed in a grating with a block length N divided into windows with a length of L.SOLUTION: The decoding of a signal expressed in a grating with a block length N divided into windows havin ...


10
Terry M Schaffner: System and method for obtaining frequency and time synchronization in a wideband communication system. Digi International, Fogg & Powers, July 21, 2015: US09088348

This document discusses, among other things, a system and method of measuring and correcting for frequency offset in wideband signals of bandwidth X within a communications system. A synchronization signal is generated and transmitted, wherein generating a synchronization signal includes generating ...