Device and method for on-line adaptive selection of baud rate and carrier frequency
US5297186A · kind A · utility
92Cited by
6References
42Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1991 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | Jul 29, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/1438
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Optimal baud rate and carrier frequency for data transmission using a modem on a communication channel (100) are determined by utilizing an on-line line probing technique. The technique utilizing the information from a decoder noise power spectrum estimated from the equalized received modulated signals and decoder output symbols to determine the decoder signal-to-noise ratios (SNRs) and supported bit rates for the available baud rates and carrier frequencies. These SNRs and bit rates together with a band edge SNR difference at each frequency band are utilized to select (110) the optimal baud rate and carrier frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.