GENERALIZED ORTHOGONAL OR SPECIAL MATHEMATICAL TECHNIQUES

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370 / | HD | MULTIPLEX COMMUNICATIONS |

203 | GENERALIZED ORTHOGONAL OR SPECIAL MATHEMATICAL TECHNIQUES {5} | |

204 | DF | .~> Plural diverse modulation techniques {1} |

206 | DF | .~> Quadrature carriers {1} |

208 | DF | .~> Particular set of orthogonal functions {1} |

210 | DF | .~> Fourier transform |

211 | DF | .~> Level multiplex |

(under the class definition) Subject matter wherein (a) a multiplexed channel is uniquely identified and separated from other multiplexed channels by members of a pair of mathematical functions having a sum of products or having an integral that is zero or sometimes one under specified conditions, or (b) particular mathematical processes are used to achieve multiplexing techniques.

(1) Note. This subclass does not include TDM or FDM techniques.

708, Electrical Computers: Arithmetic Processing and Calculating,