Secure network using orthogonal frequency division multiplexing spread spectrum communications
US7813409B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2005 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Oct 12, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/1867
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Described are a method and system for secure transmission of data through a network. A subcarrier sequence for data transmission is generated. The subcarrier sequence designates at least one subcarrier from a number of orthogonal subcarriers for each of a plurality of intervals in a time sequence. The subcarrier sequence is provided to a receiver. A data signal that includes the subcarriers identified in the subcarrier sequence modulated according to the data is transmitted from a transmitter to the receiver. For additional security, the subcarrier sequence can be transmitted to the receiver using a communications channel that is separate from the communications channel for the data signal. The data signal is detected at the receiver and demodulated according to the subcarrier sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.