Modulation numérique

Design a QPSK transmitter using an ADALM-PLUTO radio. The QPSK transmitter modulates and transmits indexed "Hello world" messages at a specified center frequency and a bit rate of 0.4 Mbps. In this example, the transmitter generates a message using ASCII characters, converts these characters to bits, and appends a Barker code at the beginning for receiver frame synchronization. This data is then QPSK modulated and filtered with a square root raised cosine filter. The filtered QPSK symbols can be transmitted over the air using the software-defined radio.

How to use the ADALM-PLUTO Radio with Simulink® to implement a QPSK transmitter. The ADALM-PLUTO Radio in this model will keep transmitting indexed 'Hello world' messages at its specified center frequency. You can demodulate the transmitted message using the QPSK Receiver with ADALM-PLUTO Radio model. This example assumes that two ADALM-PLUTO Radios are attached to your computer.

The implementation of a QPSK receiver using ADALM-PLUTO radio System objects™. The QPSK receiver receives and demodulates the signal sent by the QPSK Transmitter with ADALM-PLUTO Radio example at a bit rate of 0.4 Mbps, and prints the demodulated signal in the MATLAB® command line. In particular, this example illustrates methods to address real-world wireless communications issues like carrier frequency and phase offset, timing recovery and frame synchronization.

How to use the the ADALM-PLUTO Radio with Simulink® to implement a QPSK receiver. The receiver addresses practical issues in wireless communications, e.g. carrier frequency and phase offset, timing offset and frame synchronization. This model receives the signal sent by the QPSK Transmitter with ADALM-PLUTO Radio model. The receiver demodulates the received symbols and outputs a simple message to the MATLAB® command line.

Design an orthogonal frequency division multiplexing (OFDM) transmitter for a single-input single-output (SISO) channel using a software-defined radio (SDR).

Design an orthogonal frequency division multiplexing (OFDM) receiver for a single-input single-output (SISO) channel using a software-defined radio (SDR). The OFDM receiver captures and demodulates the OFDM signal that the OFDM Transmitter Using Software-Defined Radio example sends. The OFDM receiver design includes sample bufferring for timing adjustment, filtering, carrier frequency adjustment, and OFDM demodulation.