Method and system for increasing transmission speed of wired...

Details Method and system for increasing transmission speed of wired... Method and system for increasing transmission speed of wired...

2007-10-17

2011-10-11

Fan, Chieh M (Department: 2611)

Pulse or digital communications

Transceivers

Reexamination Certificate

active

08036258

ABSTRACT:
A communication system is provided which offers increased transmission speed while maintaining a low bit error rate. At the transmitter, a digital input is entered and a microprocessor determines from a particular subset of pulse sequence codes a single sequence of pulse coefficients that corresponds to that particular digital input. The sequence of pulse coefficients are then multiplied by a pulse shape, modulate and transmitted. At the receiver, the modulated pulses are demodulated. The demodulated pulses are then, on a pulse by pulse basis, subtracted from each of the subset of pulse sequences with the absolute values of each pulse for each pulse sequence being summed. A comparator selects a sequence of pulse coefficients corresponding to the lowest summed value of a particular pulse sequence, which is then mapped to a digital signal which is the same digital signal as the digital input.

REFERENCES:
patent: 6624822 (2003-09-01), Hayashi et al.
patent: 7257163 (2007-08-01), Hwang et al.
patent: 7600164 (2009-10-01), Chen
patent: 2007/0053422 (2007-03-01), Kisovec et al.

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