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) H04Q 7/22 (2006.01)
Patent
CA 2145568
We have invented methods of and devices for introducing unequal error protection into spread spectrum communication systems. In an illustrative method of processing a signal that includes the steps of applying a spread spectrum coding process involving encoding a first segment of the signal with a first channel encoder operating at a first rate to generate a first encoding segment having more significant bits using a first error protection process. The next step involves encoding a second segment of the signal with a second channel encoder operating at a second rate to generate a second encoded segment having less significant bits using a second error protection process. The second rate is different from the first rate and the first error protection process provides a greater amount of error protection than the second error protection process.
Seshadri Nambirajan
Sundberg Carl-Erik Wilhelm
At&t Corp.
Kirby Eades Gale Baker
LandOfFree
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