Method and apparatus to reduce the effect of crosstalk in a...

Details Method and apparatus to reduce the effect of crosstalk in a... Method and apparatus to reduce the effect of crosstalk in a...

2011-08-16

2011-08-16

Payne, David C. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Antinoise or distortion

C375S220000, C375S257000, C375S367000, C375S377000, C327S141000

Reexamination Certificate

active

08000404

ABSTRACT:
A technique for reducing crosstalk between communications paths includes scrambling data using scrambling functions that reduce or substantially minimize a probability that worst-case data patterns occur on communications paths adjacent to a potential victim communications path. In at least one embodiment of the invention, a method includes scrambling a plurality of data bits based at least in part on respective ones of a plurality of distinct combinations of one or more taps of a linear feedback shift register (LFSR). The plurality of data bits are scrambled for transmission during a first bit-time on corresponding ones of a plurality of adjacent communications paths.

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patent: WO 99/29078 (1999-06-01), None
“Linear feedback shift register”, Wikipedia, the free encyclopedia, http://en.wikipedia.org/wiki/Linear—feedback—shift—register.
Eetvelt, P. et al., “Peak to Average Power Reduction for OFDM Schemes by Selective Scrambling,” Electronics Letters, vol. 32, No. 21, Oct. 10, 1996, 2 pages.
HyperTransportTM I/O Link Specification Revision 3.00, HyperTransport Technology Consortium, 428 pages, Apr. 21, 2006.
Choi, DooWhan, “Parallel Scrambling Techniques for Digital Multiplexers,” AT&T Technical Journal, vol. 65, No. 5, Sep. 1, 1986, pp. 123-136.
International Search Report and Written Opinion, dated Nov. 6, 2007, for International Application No. PCT/US2007/007576, 11 pages.

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