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Contents

step

System object: comm.gpu.PSKDemodulator
Package: comm

Demodulate using M-ary PSK method

Syntax

Y = step(H,X)
Y = step(H,X,VAR)

Description

Y = step(H,X) demodulates data, X, with the GPU PSK Demodulator System object™, H, and returns Y. Input X must be a scalar or a column vector with double- or single- precision data type. Depending on the BitOutput property value, output Y can be integer or bit valued.

Y = step(H,X,VAR) uses soft decision demodulation and noise variance VAR. This syntax applies when you set the BitOutput property to true, the DecisionMethod property to Approximate log-likelihood ratio or Log-likelihood ratio, and the VarianceSource property to Input port. The data type of input VAR must be double or single precision.

    Note:   The object performs an initialization the first time the step method is executed. This initialization locks nontunable properties and input specifications, such as dimensions, complexity, and data type of the input data. If you change a nontunable property or an input specification, the System object issues an error. To change nontunable properties or inputs, you must first call the release method to unlock the object.

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