Method and arrangement for coding binary signals and modulating a carrier signal
US4077021A · kind A · utility
88Cited by
2References
4Claims
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Key dates
| Filing date | May 23, 1977 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | May 23, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/186
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and structure for converting a sequence of binary digits into a sequence of discrete signal values, e.g., phase values, of a modulated carrier signal for data transmission. By introducing additional redundant signal values and coding information in a state-dependent sequential manner, enlarged minimum Euclidian distance between possible signal value sequences is achieved which results in a reduced error probability when maximum-likelihood decoding is applied in the receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.