The NI-USRP driver includes several pairs of VIs, such as the niUSRP EX QAM Rx VI and the niUSRP EX QAM Tx VI, that demonstrate how to establish a digital link between two devices to transmit (Tx) and receive (Rx) signals. These examples show one way you can use Modulation Toolkit VIs to establish digital communication links. Tx examples use Modulation Toolkit VIs to generate a PN sequence message, map the bits of this message to symbols, and apply a pulse-shaping filter. Rx examples use Modulation Toolkit VIs to demodulate the acquired signal, performing operations such as frequency/symbol synchronization, and bit recovery.
Symbol Rate [Symbols/sec] = (Tx IQ Sampling Rate [S/sec] / Samples per Symbol)