H - Electricity – 03 – M
Patent
H - Electricity
03
M
H03M 13/35 (2006.01) H04L 1/00 (2006.01) H04B 1/69 (2006.01) H04B 1/707 (2006.01) H04J 13/02 (2006.01) H04Q 7/22 (2006.01)
Patent
CA 2145567
The present invention provides a method and an apparatus for enhancing communication that use spread spectrum technology. The method of processing a signal includes applying a spread spectrum encoding process to the signal where the improvement includes applying a first error protection process to a significant portion of the signal and a second error protection process to a less significant portion of the signal. The first error protection process provides a greater amount of error protection than the second error protection process. The actual step of applying the error protection processes can include, for example, applying a variable rate coder to the signal to generate an intermediate modulated signal and applying a variable time modulator to the intermediate modulated signal.
Seshadri Nambirajan
Sundberg Carl-Erik Wilhelm
At&t Corp.
Kirby Eades Gale Baker
LandOfFree
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