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Introduction to DSSS (Spread Spectrum)
In this lab, students will recover a variety of messages from an amplitude modulated carrier signal and develop an understanding of the demodulation process. Designed for NI ELVIS III.
Double Sideband Modulation and Demodulation (DSBSC)
Students will create a DSBSC signal and gain insight into the meaning of “Suppressed Carrier," and they will use product demodulation to recover the message and examine the effect of phase and...
In this lab, students will generate a frequency modulated signal using a variety of message sources, measure the power and bandwidth, and calculate the frequency deviation of the modulator circuit....
Lab 2: Amplitude Modulation
This laboratory exercise has two objectives: to gain a firsthand experience in actually programming the USRP to act as a transmitter and a receiver, and to investigate classical analog amplitude...
Sampling and Reconstruction
Students will sample a message using sample-and-hold scheme, examine the message in the frequency domain, reconstruct the message, as well as explore the relationship between sampling frequency and...
SSB Modulation and Demodulation
Students will generate an SSB signal by implementing the mathematical model for the phasing method, and then use a product detector (with a stolen carrier) to recover the message. Designed for NI...
Lab 9: Binary Phase-Shift Keying
In this lab, students will learn about binary phase-shift keying, where one binary data value is represented by an unmodified carrier, while the other is represented by an inverted carrier.