System and method of radio communications with an up-down digital signal link
US5987060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Jun 13, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention provides radio communications with an up-down signal link. In accordance with the purpose of the invention, as embodied and broadly described herein, the invention is directed to a method, system and computer readable medium with program instructions (hereafter collectively referred to as "the invention"). The invention includes receiving a downstream signal in a receiver portion of an outdoor unit, producing in the receiver portion of the outdoor unit an intermediate frequency (IF) signal from the downstream signal, and processing the IF signal in the receiver portion of the outdoor unit to produce a clean line code signal. The invention further includes processing the clean line code signal in the receiver portion of the outdoor unit to produce a modulated signal, and providing the modulated signal via an interface portion of the down-link to an indoor unit, wherein the producing and processing, respectively, of the IF, clean line code and modulated signals in the outdoor unit provides a high, constant signal-to-noise ratio on the down-link, and wherein the modulated signal is converted to a binary signal in the indoor unit. The invention additionally includes provi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.