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DBPSK Modulator Baseband - Modulate using differential binary phase shift keying method

Library

PM, in Digital Baseband sublibrary of Modulation

Description

The DBPSK Modulator Baseband block modulates using the differential binary phase shift keying method. The output is a baseband representation of the modulated signal.

The input must be a discrete-time binary-valued signal. The input can be either a scalar or a frame-based column vector. For both integer and bit inputs, the block can accept the data types int8, uint8, int16, uint16, int32, uint32, boolean, single, and double. These rules govern this modulation method when the Phase rotation parameter is θ:

• If the first input bit is 0 or 1, respectively, then the first modulated symbol is exp(jθ) or -exp(jθ), respectively.

• If a successive input bit is 0 or 1, respectively, then the modulated symbol is the previous modulated symbol multiplied by exp(jθ) or -exp(jθ), respectively.

Dialog Box

Phase rotation (rad)

The phase difference between the previous and current modulated symbols when the input is zero.

Output Data type

The output data type can be either single or double. By default, the block sets this to double.

Pair Block

DBPSK Demodulator Baseband

See Also

DQPSK Modulator Baseband, BPSK Modulator Baseband

DBPSK Demodulator Baseband

Deinterlacer

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