Patent ID: 6865236
Filing Date: 2005-03-08
Classification: H04L

Abstract:
1. Apparatus for a communication system having a first communication station, the first communication station at least operable to transmit data upon a communication channel, said apparatus for the first communication station for coding the data prior to transmission thereof at the first communication station, said apparatus comprising: a first modulator coupled to receive indications of the data to be communicated by the first-communication station, said first modulator for modulating the indications of the data to form a first-modulated signal representative thereof, the first-modulated signal forming an antipodal signal, the antipodal signal selected from an antipodal value set; a mapper coupled to said first modulator, said mapper for mapping at least a portion of the first antipodal signal, selected from the antipodal value set and formed of the first-modulated signal formed by said first modulator, to a selected dimension value selected from amongst a plurality of available dimension values, the selected dimension value selected responsive to the antipodal signal; a second modulator coupled to said mapper, said second modulator containing a set of substantially orthogonal bases, the substantially orthogonal bases of the set corresponding in dimension to the available dimension values of the plurality from amongst which said mapper selects the selected dimension value into which the first antipodal signal formed of the first-modulated signal to be mapped, said second modulator for forming a second-modulated signal, the second-modulated signal of a dimension responsive to the selected dimension value into which said mapper maps the portion of the first-modulated signal, the second-modulated signal forming biorthogonal codes defined by the substantially orthogonal bases that define multiple dimensional modulated data for transmission upon the communication channel.