Method for orderwire modulation

Details Method for orderwire modulation Method for orderwire modulation

2007-06-14

2008-08-26

Duong, Frank (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Plural diverse modulation techniques

Reexamination Certificate

active

07417944

ABSTRACT:
Methods for orderwire modulation are provided. In one embodiment, a method for an orthogonal frequency division multiplexing multipoint-to-point communications system comprises: establishing communication between a first remote unit of a plurality of remote units and a host unit, the plurality of remote units communicatively coupled to the host unit in a multipoint-to-point configuration; transmitting non-control data on up to a plurality of tones from the first remote unit using an orthogonal frequency division multiplexing (OFDM) waveform, the up to a plurality of tones modulated with the non-control data using a first modulation scheme; and transmitting control signals on up to a plurality of tones from the first remote unit using an orthogonal frequency division multiplexing (OFDM) waveform, the up to a plurality of tones modulated with the control signals using a second, more robust modulation scheme.

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