Bits

Estimating optimum sampling point for 16-QAM in MATLAB

Estimating optimum sampling point for 16-QAM in MATLAB
  1. How many bits in 16-QAM?
  2. How many different symbols are possible at the output of a 16-QAM modulator?
  3. How to generate QAM?

How many bits in 16-QAM?

Each symbol in the constellation contains up to 4 bits (0s and 1s) in a 16-QAM scheme. Therefore, the number of combinations that are possible using 4 binary bits is 24 = 16, with each state or symbol containing a value from 0000 to 1111.

How many different symbols are possible at the output of a 16-QAM modulator?

So, in each symbol period, only one of the 'dots' is transmitted. As there are 16 symbols, this version of QAM is called 16-QAM. Figure 1.8 Constellation diagram for 16-QAM.

How to generate QAM?

Quadrature Amplitude Modulation with Bit Inputs

Modulate a sequence of bits using 64-QAM. Pass the signal through a noisy channel. Display the resultant constellation diagram. Set the modulation order, and determine the number of bits per symbol.

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