MFSK Waveform

Continuous radiation generator with multi-position frequency modulation (MFSK).

mfsk waveform

Description

The MFSK Waveform block generates a continuous multi-position frequency modulation (MFSK) signal with a specified time step , frequency deviation , frequency offset and number of steps . The signal at the block output is an integer and is defined by the number of samples, the number of time steps , the number of frequency deviation steps (Fig.1):

mfsk waveform 1

Ports

Output

Port_1 - continuous emission signal with multi-position frequency modulation
`complex column vector

The output of the block defined as a complex vector-column containing samples of the signal. The number of samples in the signal depends on the following parameters:

If the Output signal format parameter is set to Steps, the block output is defined by the Number of frequency steps in output parameter or the number of steps .
If the Output signal format is set to Samples, the block output is determined by the Number of samples in output or the number of samples.
If the Output signal format parameter is set to Sweeps, the block output is determined by the Number of sweeps in output or the number of frequency deviation steps .

Parameters

Sample time - interval between calculation steps
−1 (by default) | скаляр

Specify the parameter Sample time as a non-negative number. To inherit the discrete step of the system, set the value of this parameter to −1.

Usage in program code
Block parameter:	`SampleTime`
Value:	`скаляр`
By default:	`0`

Sweep bandwidth (Hz) - frequency deviation
1e5 (by default) | positive scalar

Frequency deviation of signal with multi-position frequency modulation, specified as a positive scalar.

Usage in program code
Block parameters	`SweepBandwidth`
Values	`positive scalar`
By default	`1e5`

Frequency step burst time (s) - time step duration
5e-6 s (by default) | positive scalar

Time step duration is the period of frequency generation with step , specified as a positive scalar.

Usage in program code
Block parameters	`StepTime`
Values	`positive scalar`
By default	`5e-6`

Number of steps per sweep - total number of steps in frequency deviation
512 (By default) | even positive scalar

Specifies the number of steps per frequency deviation , specified as an even positive integer.

Usage in program code
Block parameters	`StepsPerSweep`
Values	`positive scalar`
* By default*	`512`

Chirp offset frequency (Hz) - frequency offset
0 (By default) | real scalar

Frequency offset specified as a real scalar. The frequency offset defines the frequency shift between two sequences.

Usage in program code
Block parameters	`OffsetFreq`
Values	`positive scalar`
* By default*	`0`

Output signal format - output signal format
Steps (by default) | Samples | Sweeps

The output signal format accepts values:

Steps - block output signal is specified by parameters Number of frequency steps in output or number of steps .
Samples - the block output signal is specified by the parameter Number of samples in output or the number of samples.
Sweeps - the block output signal is specified by the parameter Number of sweeps in output or the number of frequency deviation steps .

Number of sweeps in output - number of frequency deviation steps
1 (by default) | positive integer

The number of frequency deviation steps at the block output, specified as a positive integer.

Dependencies

To use this parameter, set the Output signal format parameter to Sweeps.

Number of frequency steps in output - number of steps
1 (By default) | `positive integer'.

The number of steps at the block output, specified as a positive integer.

Dependencies

To use this parameter, set the Output signal format parameter to Steps.

Number of samples in output - number of samples on the signal
100 (By default) | `positive integer'.

The number of samples in the samples signal at the block output, specified as a positive integer.

Dependencies

To use this parameter, set the Output signal format parameter to Samples.