Sweep method using digital signals
US6961370B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2001 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Nov 15, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/46
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An apparatus, system, and method, for determining the total frequency response of a communication system, include one or more testers each having a tuner, digital demodulation circuitry, and a controller that measures an absolute power level at the tester location for a particular channel and that measures a relative frequency response for the channel based on the tap weight coefficients from the digital demodulation circuitry. The absolute and relative measurements are combined and then recorded by each tester. The combined values of two or more testers are compared to determine the total frequency response of the communication system. The relative response measurements are converted from time domain to frequency domain by fast Fourier transformation. The controllers maintain a channel plan for sequencing the sweeping of consecutive channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.