Reduced peak-to-average amplitude dual channel link

Details Reduced peak-to-average amplitude dual channel link Reduced peak-to-average amplitude dual channel link

1997-06-17

2000-03-28

Vo, Don N.

Pulse or digital communications

Spread spectrum

375146, 375298, 375302, H04B 1707

Patent

active

060441038

ABSTRACT:
A novel and improved method and apparatus for generating a reduced peak amplitude high data rate channel comprised of a set of lower rate channels is described. The set of lower rate channels are phase rotated before being summed and transmitted. The amount of phase rotation is dependent on the number of channels used to form the higher rate channel. In an embodiment where two lower rate channels are used, the in-phase and quadrature-phase components of the two channels are complex multiplied before upconversion with an in-phase and quadrature-phase sinusoids. For a high rate channel comprised of more than two lower rate channels, the in-phase and quadrature-phase component of each channel is upconverted with a set of sinusoids that are phase offset from one another.

REFERENCES:
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5201071 (1993-04-01), Webb
patent: 5544167 (1996-08-01), Lucas et al.
patent: 5818867 (1998-10-01), Rasmussen et al.

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