| 摘要 |
V.29 constellation detection method and apparatus including a quadrant transformer for Processing the quantized real and imaginary component signals corresponding to a particular transmitted signal from a known set of transmitted signals by effectively rotating such components into first quadrant position while at the same time developing a quadrant designating signal or tag; a real part quantizer for determining within which of several real part regions the rotated real part component resides; a boundary line intersect selector for dynamically determining the imaginary part limits correspondence to the real part region selected; an imaginary part quantizer for determining within which of several imaginary part regions the rotated imaginary part component resides; and a constellation point selector which in response to the quantized real part, imaginary part information and quadrant information selects one of 16 constellation points as being the signal most likely received.
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