We offer a range of NI Universal Software Radio Peripherals (USRPs) to define Software Defined Radios (SDRs) used for RF applications. These integrated hardware and software solutions enable rapid prototyping of wireless communication systems. NI USRP transceivers can transmit and receive RF signals in multiple bands. The USRP hardware architecture integrates RF analogue front-ends (high-low conversion, filters, amplifiers), an RF I/Q modulation-demodulation stage, ADCs and DACs, a processor or FPGA connected by cable to a host computer (PC or PXI chassis) to send and receive correctly formatted baseband I/Q data. USRPs are programmed using the LabVIEW development environment. This solution offers great flexibility for software radio prototyping and communications research.

Applications

- The bench includes a wide range of test systems and software that can provide a flexible and powerful environment for carrying out key tests in the telecommunications field up to 60 GHz, such as :
Real-time characterisation of a complex transmission and/or reception system, from baseband generation to RF transmission.
- Real-time characterisation of a transmission/reception system, from demodulation to data recovery, with options for analysing the integrity of the RF signal at each stage of the channel (EVM, channel power measurements, occupied bandwidth, modulation accuracy, etc.), the digital signal (BERT, PER, eye diagrams, jitter measurements) and mixed signals.
- Characterisation of link robustness in relation to real-time RF channel emulation, interference analysis.
- Physical testing of interoperability in heterogeneous sensor networks.
- Testing the non-linearity of an amplifier on the communication channel and hard/soft correction.
- Frequency and phase synchronisation test.
- Testing the accuracy and stability of the clock.
- Optimise the size of transmission packets.
- Optimise the size of the synchronisation preamble.
- Measure component temperature drift and the impact on the transmission.
Certain measurement techniques can be used by the CHOP group for THz communications.

HIGHLIGHTS

- Main physical characteristics of the USRP
The USRPs are equipped with a 10 MHz OCXO (Oven Controlled Crystal Oscillator) reference clock, which complies with the GPS standard. GPS discipline improves frequency accuracy and synchronisation capabilities. It is equipped with a reconfigurable FPGA.
Transmitter :
- Number of channels 2
- Frequency range from 10 MHz to 6 GHz
– Pas de fréquence < 1KHz - Puissance de sortie maximale (Pout) 50 mW à 100 mW (17 dBm à 20 dBm) - Plage de gain 0 dB à 31,5 dB - Pas de gain 0,5 dB - Largeur de bande instantanée maximale en temps réel 160 MHz - Fréquence d'échantillonnage I/Q maximale 200 MS/s - Convertisseur numérique-analogique (CNA) Résolution 16 bits - Plage dynamique sans parasites (sFDR) 80 dB USRP-2954 Récepteur : - Nombre de canaux 2 - Gamme de fréquences 10 MHz à 6 GHz Pas de fréquence - Pas de fréquence < 1KHz - Plage de gain 0 dB à 37,5 dB - Pas de gain 0,5 dB - Puissance d'entrée maximale (Pin) -15 dBm - Facteur de bruit 5 dB à 7 dB - Largeur de bande instantanée maximale en temps réel 160 MHz - Taux d'échantillonnage I/Q maximal 200 MS/s - Convertisseur analogique-numérique (ADC) Résolution 14 bits, sFDR 88 dB Suite logicielle - Labview - Module FPGA Labview - Suite de conception de systèmes de communication Labview - GNU Radio, Python, Matlab, Simulink, C/C++. [/av_textblock] [/av_one_full]