Method and arrangement for measuring the carrier frequency deviation in a multi-channel transmission system
US5450456A · kind A · utility
64Cited by
6References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 12, 1993 |
| Grant date | Sep 12, 1995 |
| Priority date | — |
| Expiry date | Nov 12, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2675
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multi-channel transmission system operates by transmitting digitally-coded signals modulated in sequential symbol blocks at a plurality of carrier frequencies, and receiving and demodulating the digitally-coded signals, wherein, in the transmitting, a test signal is generated in at least one symbol block, the test signal containing at least one periodically continued, differentially coded, self-orthogonal sequence of a constant amplitude modulated to a part of the plurality of carrier frequencies within a symbol block in differential coding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.