Hybrid software/hardware discrete multi-tone transceiver
US6570912B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1999 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Mar 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2626
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A hybrid modem or transceiver includes communication hardware that transforms time domain samples of a received signal to frequency domain information. The communication hardware transfers the frequency domain information to a host computer which executes receiver software to process the frequency domain information and extract data. The host computer also executes transmitter software to determine frequency domain information corresponding to a transmitted signal. The transmitter software transfers that frequency domain information to the communication hardware which converts the frequency domain information to time domain samples of the transmitted signal. Typically, the hybrid modem or transceiver includes processing hardware for Fourier transforms and inverse Fourier transforms that convert information between the time and frequency domains. This reduces the processing burden on the host computer when compared to conventional software modems or transceivers, but does not have the high hardware costs associated with conventional hardware modems and transceivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.