Euclidean Distance, Gain/Loss and PAR Considerations of the Non-square QAM Constellations with Independent I and Q Proposed in CF-038

In the Clearwater meeting of Question 4 of Study Group 15, in January 2001, during the presentation and the discussion of document CF-038: "G.gen: G.vdsl G.dmt.bis: G.lite.bis: Method for Using Non-Squared QAM Constellations with Independent I&Q for Receiver Soft-Decision Decoding Techniques", some members of the committee asked for details about the power of the proposed constellations with respect to the constellations of G.992.1 and the case of rectangular constellations with independent I & Q. This paper provides details about the Euclidean distance, gain/loss and PAR of the proposed constellations with respect to the constellations of G.992.1 and the case of rectangular constellations with independent I & Q, using as reference, the constellations of G.992.1.

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