Device and method for digital vestigial sideband modulation

Details Device and method for digital vestigial sideband modulation Device and method for digital vestigial sideband modulation

1997-01-10

1998-09-01

Grimm, Siegfried H.

Modulators

Amplitude modulator

Single or vestigial sideband type

348724, 375270, 375301, H03C 160, H04L 2704

Patent

active

058015957

ABSTRACT:
A digital signal processing device and method for vestigial sideband (VSB) modulation of a digital signal. A 2.sup.n -ary digital signal d.sub.i is provided to a baseband shaping filter which samples the signal to provide a baseband signal which has real and imaginary portions Re(S.sub.bb (kT)) and Im(S.sub.bb (kT)), where ##EQU1## The VSB signal is provided with perfect sideband suppression without using analog filters. The digital signal processing device and method is characterized by requiring minimal bandwidth in the shaping filter.

REFERENCES:
patent: 5327462 (1994-07-01), Takahashi et al.
patent: 5592513 (1997-01-01), Montreuil

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