06647250 is referenced by 104 patents and cites 90 patents.

The present invention includes a system and method for ensuring reception of a communications signal. A modulating baseband signal with desired information is accepted, and a plurality of redundant spectrums is generated. Each redundant spectrum comprises the necessary amplitude, phase, and frequency information to substantially reconstruct the modulating baseband signal. It is expected but not required that the redundant spectrums will be generated at a first location and sent to a second location over a communications medium. At the second location, the redundant spectrums are independently processed to recover a demodulating baseband signal for each of the redundant spectrums. In one embodiment, an error detection process is employed at the second location to detect and eliminate those demodulated baseband signals that have been corrupted during transmission. An error-free demodulated baseband signal is selected from the remaining demodulated baseband signals. The error-free demodulated baseband signal is representative of the modulating baseband signal sent over the communications medium.

Title
Method and system for ensuring reception of a communications signal
Application Number
9/376509
Publication Number
6647250 (B1)
Application Date
August 18, 1999
Publication Date
November 11, 2003
Inventor
David F Sorrells
Jacksonville
FL, US
Charley D Moses Jr
Jacksonville
FL, US
Richard C Looke
Jacksonville
FL, US
Robert W Cook
Switzerland
FL, US
Michael J Bultman
Jacksonville
FL, US
Agent
Sterne Kessler Goldstein & Fox P L L C
US
Assignee
ParkerVision
FL, US
IPC
H04B 1/02
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