Continuous Phase Frequency Shift Keying (CPFSK) is a modulation that, as its name implies, can be characterized as a traditional frequency. Abstract: This paper presents a new modulation technique called variable rate. M -CPFSK modulation. It consists of the 2-CPFSK, 4-CPFSK and 8-CPFSK. PDF | In this paper, we discuss binary Continuous Phase Frequency Shift Keying (CPFSK) considering it as an improved modulation technique for application in.

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Click the button below to return to the English version of the page. The object properties correspond to the block parameters. If the message signal is assumed to be causalthen the cpfs, on the integral change to a lower bound of zero and a higher bound of t. Usage notes and limitations: Translated by Mouseover text to see original.

Size of symbol alphabet Specify the size of the symbol alphabet.

Continuous phase modulation – Wikipedia

SamplesPerSymbol Number of samples per output symbol Specify the upsampling factor at the output as a real, positive, integer scalar. ModulationIndex Modulation index Specify the modulation index.

Specify output data type as one of double single. The output width equals the product of the number of symbols and the Samples per symbol parameter value. Double-precision floating point Single-precision floating point. Click the button below to return to the English version of the page.

When the object operates in multi-h, h modulationn must be a rational number. When you set Input type to Bitthe input must be a column vector with a width that is an modulagion multiple of Kthe number of bits per symbol. Rate options Select the rate processing option for the block. When you set Input type to Integerthe input must be a scalar.


Select the China site in Chinese or English for best site performance. When h i varies from interval to interval, modulafion object operates in multi-h.

comm.CPFSKModulator System object

When you set the Input type parameter to Integerthe block accepts odd integers between – M-1 and M Based on your location, we recommend that modultaion select: This object modulates the input signal using the continuous phase frequency shift keying CPFSK modulation method.

Note that this does not mean that m t must be continuous; in fact, most ideal digital data waveforms contain discontinuities.

When you set this property to Binarythe object uses a natural binary-coded ordering. Samples per symbol The number of output samples that the block produces for each integer or binary word in the input, which must be a positive integer. Continuous phase modulation CPM is a method for modulation of data commonly used in wireless modems. Click here to see To view all translated materials including this page, select Country from the country navigator on the bottom of this page.

Whenever the amount of ISI is known, such as with any partial-response signaling scheme, MLSE can be used to determine the exact symbol sequence in the absence of noise. Modulatiln automated translation of this page is provided by a general purpose third party translator tool. MathWorks does not warrant, and disclaims all liability for, the accuracy, suitability, or fitness for purpose of the translation. The default is 0. BitInput Assume bit inputs Specify whether the input is bits or integers.


This block accepts a scalar-valued or column vector input signal. The output is a baseband representation of the modulated signal. Specify whether the input is bits or integers.

This object has the ModulationOrder property set to Mand the other specified properties set to the specified values.

Modulate using continuous phase frequency shift keying method – Simulink

The value of this property must be a real, nonnegative scalar or column vector. Select the China site in Chinese or English for best site modularion.

In single-rate processing mode, the input and output signals have the same port sample time. OutputDataType Data type of output Specify output data type as one of double single. Continuous-phase frequency-shift keying CPFSK is a commonly used variation of frequency-shift keying FSKwhich is itself a special case of analog frequency modulation.

All Examples Functions Blocks Apps. This is typically accomplished by filtering the phase trajectory prior to modulation, commonly using a Raised Cosine or a Gaussian filter. In general, a standard FSK signal does not have continuous phase, as the modulated waveform switches instantaneously between two sinusoids with different frequencies.

This page has been translated by MathWorks. When you set the Input type parameter to Bitthe block accepts groupings of K bits.