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1© 2016 The MathWorks, Inc.
WLAN, LTE and 5G System Design
김용정부장([email protected])Application EngineerMathWorks
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Agenda
§ Innovations & Workflows in Mobile Communications
§ Waveform Generation and End-to-end Simulation – WLAN, LTE, 5G (FBMC, UFMC)
§ RF Instrument & Software-Defined Radio Connectivity– Transmission/Reception of LTE/WLAN Signals with
SDRs
§ Summary
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Evolution of Air Interface Technologies
4G 5G ?
5G standardization
IEEE 802.11 WLAN
standards
3GPP LTE, LTE-A
Rel-8Dec 2008 Rel-9
Dec 2009 Rel-10Mar 2011 Rel-11
Mar 2013 Rel-12Mar 2015 Rel-13
Mar 2016
Massive MIMO
New Modulations
New Frequency bands
Small Cells, HetNets
Requirements Higher data ratesEfficient spectrum useSpatial resourceLow delay & link adaptability Reliable service everywhereHigh connection density
Proposed enabling technologies
802.11ad802.11ax802.11ay802.11ah
2016 2018 2020+
Rel-14
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Workflow/Use-cases of wireless designers
End-to-End Simulations Measurements
Signal Generation
Packet successfully decoded!
Packet detected
VHT-SIGA Decoded
Signal Detection
ZynqSDR
RFSignalGenerator
HW & Radio Connectivity
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Did you know MATLAB/Simulink can help you with …
Design and VerificationSimulate baseband and RF systemsIncluding LTE & WLAN standards
Over-the-air testingValidate models with SDR and RF instruments
Prototyping and ImplementationDeploy algorithms onto target system
Simulation
Testing
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1. Perform waveform generation and end-to-end simulation of LTE, WLAN systems
2. Explore proposed 5G waveforms with FBMC, UFMC modulation schemes
3. Perform measurements (EVM, BER, PER, … ) and analyze received waveforms
4. Go beyond simulation: Connect waveform to RF instruments and SDRs for over-the-air transmission and recovery of live radio signals
What you will learn today
7© 2016 The MathWorks, Inc.
WLAN systems
Waveform Generation & End-to-end Simulation with MATLAB
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WLAN 802.11ac TransceiverDemo
ReceiverTransmitter Channel
Test Waveform Generation
Synchronisation & OFDM Demodulation
Channel Estimation&
EqualisationFading Channel
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WLAN System Toolbox
“Provides standard-compliant functions for the design, simulation, analysis, and testing of WLAN systems.”
§ Physical layer models for 802.11a/b/g/n/ac
§ Open, customizable MATLAB code
§ Transmitter & Receiver implementations
§ TGn & TGac channel models
§ C-code generation enabled with MATLAB Coder
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For more information …
§ Consult WLAN Product Pagewww.mathworks.com/products/wlan-system/
– Provides overview of WLAN capabilities – Organized based on use-cases
§ Consult Wireless Communications Pagewww.mathworks.com/wireless
– Provides overview of today’s MATLAB® for Wireless System Design
§ For details: Attend Upcoming Recorded Webinar:– “Introducing WLAN System Toolbox”
11© 2016 The MathWorks, Inc.
LTE/LTE-A systems
Waveform Generation & End-to-end Simulation with MATLAB
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LTE/LTE-A TransceiverReceiverTransmitter Channel
Test Waveform Generation
Synchronisation & OFDM Demodulation
Channel Estimation&
EqualisationFading Channel
Demo
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LTE System Toolbox
§ LTE and LTE-Advanced (Rel-8 through Rel-12)§ Scope
– FDD/TDD, – Uplink/Downlink– Transmitter/Receiver
§ ~200 functions for physical layer (PHY) modeling§ Signal generation for LTE & UMTS§ ACLR/EVM measurement§ Conformance Tests
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For more information …
§ Consult LTE Product Pagewww.mathworks.com/products/lte-system/
– Provides overview of LTE/LTE-A capabilities – Organized based on use-cases
§ Consult Wireless Communications Pagewww.mathworks.com/wireless§ Provides overview of today’s MATLAB®
for Wireless System Design
§ For details: Attend Recorded Webinar:– “Introducing LTE System Toolbox”
15© 2016 The MathWorks, Inc.
5G new modulation candidates: FBMC, UFMC
Waveform Generation & End-to-end Simulation with MATLAB
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§ 5G systems require both spectral efficiency and robust synchronization
§ Majority of candidates: Multi-carrier, Non-Orthogonal waveforms
§ Members of “filtered” OFDM designs:1. FBMC: Filter-Bank Multi-Carrier2. UFMC: Universal Filtered Multi-
Carrier3. GFDM: Generalized Frequency
Division Multiplexing
5G Waveforms: New Modulation Schemes
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Filter-Bank Multi-carrier (FBMC)
§ Introduce per-subcarrier filtering to reduce the side-lobes§ Couple of implementation options:
– Frequency spreading (extended iFFT/FFT)– Poly-phase network (more efficient, commonly employed)
Disadvantages:§ Non-orthogonal in complex plane, overlapped symbols§ A more complicated receiver structure, esp. for MIMO
Demo
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Universal Filtered Multi-carrier (UFMC)
§ Filtering applied per sub-bands (not per sub-carrier as in FBMC)– Filtering parameterized by side-lobe attenuation– Reduced filter length (compared to FBMC)– Good for short bursts, suited for uplink with multiple users
§ Orthogonal in the complex plane– use QAM symbols, reapply MIMO schemes
§ Receiver complexity– Similar to OFDM, use per subcarrier equalization
Demo
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5G Challenges and Our solutions§ New Modulation Schemes
– Performance characteristics of FBMC, UFMC, etc.
§ More Antennas– Beamforming and precoding algorithms – Antenna arrays and Massive MIMO
§ New Frequency Bands– RF system architectures design in mmWave frequencies– Advanced Antenna, RF and DSP Co-Design– Channel modeling from real-world measurement data
§ Real Hardware Verification and Prototyping– Hardware testbed to verify designs with live radio signals in realistic scenarios
for standards such as LTE & Wi-Fi– Quick prototyping on FPGA
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For more information …
§ Consult 5G Discovery Pagewww.mathworks.com/discovery/5g-wireless-technology.html
§ Consult Wireless Communications Pagewww.mathworks.com/wireless
– Provides overview of today’s MATLAB® for Wireless System Design
21© 2016 The MathWorks, Inc.
Connectivity to RF instruments & SDR
Over-the-air testing and Verification with Radio/Hardware in MATLAB
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Over-the-air testing
Input bits
Antenna Array
(MIMO)
ChannelCoding &
ModulationMulti-carrier
Transmitter
Transmitter
Receiver
De-Modulation & Channel Decoding
EqualizerChannel
estimation
Output bits
Source Coding
Source Decoding
Channel
Noise
Large-scale fading
(path-loss …)
Small-scale fading
(Multipath, Doppler effects)
Interference
Over-the-airTransmission
&Reception
Demo
LTE or WLAN
LTE or WLAN
Time & Frequency
offset detection/
Compensation
End-to-end simulation
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Hardware & Radio Connectivity
Generate customwaveforms
Transmit with SDR devices or RF instruments
Capture signals with SDR or instruments
Recoveroriginal data
RFSignalGenerator
SpectrumAnalyzer
ZynqRadioSDR
USRPSDR
Range of supported hardware
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Supported SDRs & RF instruments
RF Signal Generator
Zynq Radio SDR
USRP SDR
RF Spectrum Analyzer
Zynq Radio SDR
USRP SDR
RTL SDR
Transmitter Receiver
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For more information …
§ Consult SDR Discovery Pagehttp://www.mathworks.com/sdr
§ Consult Wireless Communications Page
www.mathworks.com/wireless– Provides overview of today’s
MATLAB® for Wireless System Design
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Summary:With Today’s MATLAB you can …Design and VerificationSimulate baseband and RF systems
• 5G, WLAN, LTE and custom waveform generation• Measurements (EVM, BER, PER, … ) & analysis of received
waveforms • Transmitter-Channel-Receiver end-to-end simulation
Over-the-air testingValidate models with SDR and RF instruments
• Connect LTE/WLAN signals to USRP or Zync Radio• Live experiments with Video/music/audio as input signals• Measurements (EVM, BER, PER, … ) & analysis of over-the-air received
waveforms
