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DBPSK Demodulator Baseband - Demodulate DBPSK-modulated data

Library

PM, in Digital Baseband sublibrary of Modulation

Description

The DBPSK Demodulator Baseband block demodulates a signal that was modulated using the differential binary phase shift keying method. The input is a baseband representation of the modulated signal.

The input must be a discrete-time complex signal. The block compares the current symbol to the previous symbol. It maps phase differences of θ and π+θ, respectively, to outputs of 0 and 1, respectively, where θ is the Phase rotation parameter. The first element of the block's output is the initial condition of zero because there is no previous symbol with which to compare the first symbol.

The input can be either a scalar or a frame-based column vector. The block accepts input of data types single and double.

Dialog Box

Phase rotation (rad)

This phase difference between the current and previous modulated symbols results in an output of zero.

Output data type

When the parameter is set to 'Inherit via internal rule' (default setting), the block will inherit the output data type from the input port. The output data type will be the same as the input data type if the input is of type single or double.

For both integer and bit inputs, this block can output the data types int8, uint8, int16, uint16, int32, uint32, boolean, single, and double.

Pair Block

DBPSK Modulator Baseband

See Also

M-DPSK Demodulator Baseband, DQPSK Demodulator Baseband, BPSK Demodulator Baseband

Data Mapper

DBPSK Modulator Baseband

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