Method and system for increasing reliability of data packet...

Details Method and system for increasing reliability of data packet... Method and system for increasing reliability of data packet...

2005-08-30

2005-08-30

Chase, Shelly A (Department: 2133)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Transmission facility testing

Reexamination Certificate

active

06938192

ABSTRACT:
The present invention provides a method and system for increasing reliability of data packet transmission against impulsive noise in powerline communication systems. The method modulates copies of a data packet on two different frequencies, and transmits the modulated data packets along the powerline. One copy is transmitted shifted in time by at least one bit from the other copy. Thus, when an impulsive noise occurs along the powerline, the bits destroyed in the modulated first copy are different than the bits destroyed in the second copy. In this manner, the remaining bits in the first and second copies can be compared and used to reconstruct the data packet. The reliability of data packet transmission against impulsive noise is increased.

REFERENCES:
patent: 5355114 (1994-10-01), Sutterlin et al.
Friedman et al., error control on in-building power line communication channels, 1993, IEEE, p. 178-185.

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