Receiver capable of parallel demodulation of messages
US6181258A · kind A · utility
68Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1999 |
| Grant date | Jan 30, 2001 |
| Priority date | — |
| Expiry date | May 17, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiver which is capable of receiving in parallel data transmitted at arbitrary frequencies within a radio channel includes: a radio frequency (RF) front end to convert an RF signal to a digitized signal; a Fast Fourier Transform (FFT) generator coupled to the RF front-end to separate the digitized signal into a plurality of sub-channels; a bank of phase locked loops (PLLs) coupled to the FFT generator, each PLL operating on a sub-channel with a sub-channel center; and a flag detector coupled to the bank of PLLs to detect variations from the sub-channel center and to recover the usage data transmitted from the end-point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.