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16.3 Proposed DCast 351
constellation [396]. This constellation is a typical N-QAM constellation with N equal
to 65,536 (256 by 256). Each input real value is quantized into an 8-bit integer num-
ber by uniform scalar quantizer. The dynamic range of the quantizer is formed by
the minimal and maximal input values. It is calculated for each frame at encoder and
sent to decoder as a parameter in Eq. (16.17). After this quantization, every two in-
tegers compose one complex number as the output of the 64K-QAM constellation.
An inverse FFT is computed on each packet of symbols, giving a set of complex
time-domain samples. These samples are then