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pam_RectanglePulse.vi

Module by: Ed Doering. E-mail the authorEdited By: Brett Hern, Erik Luther, Sam Shearman

Summary: Build a LabVIEW subVI to create a rectangle pulse shape suitable for a pulse amplitude modulation (PAM) transmitters.

Table 1
LabVIEWtop.png This module refers to LabVIEW, a software development environment that features a graphical programming language. Please see the LabVIEW QuickStart Guide module for tutorials and documentation that will help you:
• Apply LabVIEW to Audio Signal Processing
• Get started with LabVIEW
• Obtain a fully-functional evaluation edition of LabVIEW

Note:

Visit LabVIEW Setup to learn how to adjust your own LabVIEW environment to match the settings used by the LabVIEW screencast video(s) in this module. Click the "Fullscreen" button at the lower right corner of the video player if the video does not fit properly within your browser window.

LabVIEW SubVI: pam_RectanglePulse.vi

  • Description: Create a rectangle pulse shape suitable for pulse amplitude modulation (PAM) transmitters.
  • Category: Pulse amplitude modulation (PAM) ("pam" prefix)

Inputs (Controls)

  1. Tb, bit interval [s] -- DBL
  2. fs, sampling frequency [Hz] -- DBL

Parentheses ( ) indicate default value; square brackets [ ] designate units.

Outputs (Indicators)

  1. pulse shape -- 1-D DBL array

Required Behavior

  • pulse shape is an array of constant unit value.
  • The array length is one bit interval Tb times the sampling frequency fs.

LabVIEW Coding Tips

Review the LabVIEW help page for "Programming | Array | Initialize Array."

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