Trellis precoding for fractional bits/baud

Details Trellis precoding for fractional bits/baud Trellis precoding for fractional bits/baud

1990-04-06

1993-05-25

Kuntz, Curtis

Pulse or digital communications

Repeaters

Testing

375 39, 371 43, H04L 2734

Patent

active

052146723

ABSTRACT:
A digital data sequence is mapped into a signal point sequence e(D) for data transmission over a channel h(D) to produce a channel output sequence y(D)=e(D)h(D). e(D) is chosen so that the signal points in the sequence y(D) belong to a class of possible sequences based on the digital data sequence, the class being based on a time-varying trellis code derived from an N-dimensional time-invariant trellis code by using different transformed versions of its underlying lattices for respectively different N-dimensional symbols.

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