Method and system for communication spectral backward compatibility
US7251287B1 · kind B1 · utility
1Cited by
3References
42Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 9, 2002 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Sep 12, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Communications method including the procedures of modulating a second generation carrier signal, with a first generation Baseband bandwidth signal, when transmitting to first generation devices, and, modulating the second generation carrier signal, with a second generation Baseband bandwidth signal, when transmitting to second generation devices, wherein the first generation Baseband bandwidth signal, is shaped so as to recreate a first generation signal, when up-sampled and modulated with a second generation carrier signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.