Judging method and a precoding apparatus

Details Judging method and a precoding apparatus Judging method and a precoding apparatus

1997-03-31

2000-06-20

Pham, Chi H.

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

375262, 375263, 375341, H04L 512, H04L 2302

Patent

active

060786248

ABSTRACT:
A preceding apparatus for calculating a difference between an inputted signal point and an output signal obtained one timing before and outputting the difference has a position information judging unit for judging which position on a vector plane the output signal obtained one timing before is located in, and a signal point selecting storage for outputting any signal point among a plurality of signal points generated correspondingly to a signal point inputted from the outside with a result of the judgement fed form the position information judging unit nd the signal point inputted from the outside as an address, thereby decreasing the number of cycles required by a DSP process and realizing a precoder process in a degree achieved hitherto.

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patent: 5465273 (1995-11-01), Cole
patent: 5734681 (1998-03-01), Kaku et al.

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