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Odd values of b

Example constellation for the case is shown in figure gif.

Figure: Constellation labels for and

if is odd and greater than 3, the 2 MSBs of X and the 2 MSBs of Y are determined by the 5 MSBs of the bits.

The 7-bit constellation can be obtained from the 5-bit constellation by replacing each label by the 2x2 block of labels:

Kimmo K. Saarela
Mon Mar 6 12:47:27 EET 1995