发明名称 |
METHODS OF AND DEVICES FOR ENHANCING COMMUNICATIONS THAT USE SPREAD SPECTRUM TECHNOLOGY |
摘要 |
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.
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申请公布号 |
CA2145568(C) |
申请公布日期 |
1999.12.28 |
申请号 |
CA19952145568 |
申请日期 |
1995.03.27 |
申请人 |
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发明人 |
SESHADRI, NAMBIRAJAN;SUNDBERG, CARL-ERIK WILHELM |
分类号 |
H03M13/35;H04L1/00;(IPC1-7):H04B1/69;H04Q7/22 |
主分类号 |
H03M13/35 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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