Simultaneous analog and digital communication using...

Details Simultaneous analog and digital communication using... Simultaneous analog and digital communication using...

H - Electricity

04

M

H04M 11/06 (2006.01) H03M 7/00 (2006.01) H04J 7/00 (2006.01) H04L 27/34 (2006.01)

Patent

CA 2121936

-24- Simultaneous Analog and Digital Communication Using Fractional Rate Encoding Abstract Digital data is encoded using a modulus m converter 700 to produce fractionally encoded words, where m is the nearest integer larger than 2c and c is a noninteger. The fractionally encoded words are mapped into a symbol constellation having m symbols to produce a two dimensional data signal 62, 63. The data signal is added to a two dimensional analog signal, which was obtained by encoding an input analog signal, to produce a combined two dimensional signal. The combined signal is modulated using QAM and then transmitted over a communication channel.(FIG. 17).

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