Engineering

Introduction to LabVIEW-USRP-RIO Software Defined Radio Platform

Dr. Gayathri KongaraTeaching Associate,Monash UniversityClayton Campus

Labview defined USRP platform

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PresenterPresentation NotesMost important differentiator to earlier model is the FPGA can be re programmed. It has a flexible hardware software interface, meaning existing IPs such as Matlab codes, C code and VHDL codes can be easily integrated in the system design.

USRP RIO is powered by the reconfigurable I/O (RIO) architecture, which combines open LabVIEW system design software with high-performance hardware to dramatically simplify development. The tight hardware and software integration alleviates system integration challenges, which are significant in a system of this scale, so researchers can focus on research. Although the NI application framework software is written entirely in the LabVIEW programming language, LabVIEW can incorporate IP from other design languages such as .m file script, ANSI C/C++, and HDL to help expedite development through code reuse.

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NI-USRP Tranceiver connections

Hardware Setup Steps BEFORE booting the computer, all power and MXIe cables must be connected, and the NI USRP-RIO powered up.[If you forget this step you MUST log into the computer, shutdown windows, wait for the computer to power down, and start over.]Make the MXIe cable and Power connection to the USRP RIO (and power it on using the power button on the front)

Attach the Antennas

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Hardware and Software RequirementsHardware:

1 NI USRP RIO1 NI PCIe-8361 (MXIe x4 to MXIe x4 cable) or NI ExpressCard-8360B (x1 to x4 adatper cable)

1 Desktop PC 2 -4 AntennasSoftware:

LabVIEW 2013/2014, LabVIEW FPGA, Modulation and signal processing tool boxes for communication system design

NI USRP-RIO Drivers NI USRP RIO Driver NI-2943R

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PresenterPresentation NotesUSRP RIO is powered by the LabVIEW reconfigurable I/O (RIO) architecture, which combines open LabVIEW system design software with high-performance hardware to dramatically simplify development. The tight hardware and software integration alleviates system integration challenges, which are significant in a system of this scale, so researchers can focus on research. Although the NI application framework software is written entirely in the LabVIEW programming language, LabVIEW can incorporate IP from other design languages such as .m file script, ANSI C/C++, and HDL to help expedite development through code reuse.

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PresenterPresentation Notes1.The output power resulting from the gain setting varies over the frequency band andamong devices.2 Frequency accuracy is based on temperature-compensated crystal oscillator (TCXO)vendor specifications and is not measured. Alternatively, you can incorporate anexternal reference source to provide a more precise frequency Reference Clock and toachieve better frequency accuracy.

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Software Defined Radio At the Transmitter

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Hardware configuration in

LabVIEW for implementation on

Hardware

Bits to symbols Mapping

Transmitter Pulse

shaping LDigital to Analog

conversionSent to RF

daughterboard

RF Carrier frequency of transmission

Tx Antenna

All baseband processing implemented in the software (LabVIEW)

Apply artificial Transmitchannel

Upsampling

Software Defined Radio At the Receiver

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All Receiver baseband processing implemented in the software (LabVIEW)

Hardware configuratio

n in LabVIEW for implementa

tion on Hardware

Analog to digital

conversionSent to RF daughterb

oard

Receve filtergRx[n] M Symbol de-mapping

To bits

Downsampling

RF Carrier frequency generated by the local

oscillator

Rx Antenna

DataDetection

Modular Software Architecture

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Top_tx.vi Top_rx.vi

Transmit BasebandProcessing

RFUp-

conversions

RFDown-

conversions

Receive BasebandProcessing

Digital Communications Library

RF Function Library

RF Function Library: RF functional blocks used in establishing real-time communication system

Top_tx/Top_rx.vi: Top-level transceiver system design that connects baseband and RF processing software modules.

Digital communications Library: Contains of all essential building blocks that are required for implementing transmit/receive baseband processing.

Lab Activities

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Weeks 2 & 3 : LabVIEW implementation

Weeks 4 & 5 : SDR implementation using NI-USRP-RIO Platform

Weeks 6 & 7 : Digital Modulation & Demodulation

Weeks 8 & 9 : Pulse Shaping & Matched Filtering

Weeks 10 & 11 : Synchronization techniques for digital modulation

Week 12: Channel Estimation and Equalization

NI Certification Exam (optional)

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Students enrolled into ECE 5884/ 6884 unit will be given an opportunity to take the NIcertification exam. NI will waive exam fee for students enrolled in this unit.

If you are interested, you can talk to you demonstrator or access the link https://www.ni.com/services/certification.htm To obtain more details.

Introduction to LabVIEW-USRP-RIO Software Defined Radio Platform Labview defined USRP platform NI-USRP Tranceiver connectionsHardware and Software RequirementsSlide Number 5Slide Number 6Slide Number 7Slide Number 8Slide Number 9Slide Number 10Software Defined Radio At the TransmitterSoftware Defined Radio At the ReceiverModular Software Architecture Lab ActivitiesNI Certification Exam (optional)