64 QAM signal constellation which is robust in the presence of p

Pulse or digital communications – Receivers – Particular pulse demodulator or detector

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375261, 329304, H03D 100

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058320415

ABSTRACT:
A 64 QAM signal constellation reduces phase noise as compared with a rectangular constellation, but requires a fairly simple decoder. The constellation has decision regions which are approximately rectangular; allows for quadrant decoding; and has constellation points representable by a small number of bits.

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