Spread carrier self correcting codes
US8059695B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 2007 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Jan 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J13/107
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transmitter, receiver and communication technique. The transmitter is adapted to interleave a first pseudo-noise sequence with a second pseudo-noise sequence to provide a third pseudo-noise sequence. The third sequence is transmitted and then received by the inventive receiver. The first and second sequences are chosen so that an XOR of the two sequences produces a third, known-valid pseudo-noise sequence. The receiver includes an arrangement for receiving and correlating the third pseudo-noise sequence to provide a measure of a frequency of the transmitted signal. The receiver further includes an arrangement for downconverting and filtering the received signal to provide a filtered complex signal. A complex multiplier is included for effecting a complex multiplication of the filtered complex signal with a delayed version of the filtered complex signal to provide a product. A correlator is included for correlating the product to provide the measure of frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.