专利名称：SYSTEM AND DEVICE FOR, AND METHOD
OF, COMMUNICATING ACCORDING TO ACOMPOSITE CODE
发明人：FORNEY, GEORGE, D., JR.申请号：EP97954558申请日：19971212公开号：EP0919087A4公开日：20010816
摘要：System and device (200) for, and method of, communicating according to atrellis code (300) of baseband signals chosen from a fixed set of baseband signal points.A first set of signal points define a first subconstellation, and a second set of signalpoints define a second subconstellation. The first subconstellation is characterized with adifferent minimum distance between adjacent signal points than the minimum distancefor the second subconstellation. Under a PCM modem arrangement (200) the first andsecond constellations respectively include set of signal points selected from the PSTNquantization rules, and the first subconstellation has a smaller minimum distance than thesecond.
申请人：MOTOROLA, INC.
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