Device and method for on-line adaptive selection of baud rate an

Details Device and method for on-line adaptive selection of baud rate an Device and method for on-line adaptive selection of baud rate an

1991-07-29

1994-03-22

Chin, Stephen

Pulse or digital communications

Spread spectrum

Direct sequence

375 10, 375 13, 4552263, H04L 2300

Patent

active

052971864

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.

REFERENCES:
patent: 4310721 (1982-01-01), Manley et al.
patent: 4756007 (1988-07-01), Qureshi et al.
patent: 4817114 (1989-03-01), Boer et al.
patent: 4956851 (1990-09-01), Wolensky et al.
patent: 5031193 (1991-07-01), Atkinson et al.
patent: 5048054 (1991-09-01), Eyuboglu et al.

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