Gigabit Baseband Modem Technology for 5G mmWave Applications · Gigabit Baseband Modem Technology...

© Blu Wireless Technology – May 2017

Gigabit Baseband Modem Technology for 5G mmWave Applications

Interlligent Seminar, 18th May 2017

Ray McConnell, CTO

http://www.bluwirelesstechnology.com/


Blu Wireless Technology Ltd Gigabit mmWave modem IP

– Consumer WiGig : IEEE 802.11ad/ay

– 4G backhaul and Fixed Wireless Access

– Pre-5G deployments

60+ wireless, silicon & software engineers

Strategic partnership with ARM Ltd

Deployment of 802.11ad for US customers

Deep sub-micron SoC baseband design

Participant in EU H2020 5G-XHaul project

Members of Wi-Fi Alliance WiGig, ETSI mWT ISG groups and UK’s 5G IC

15-May-17


10 20 30 40 50

60 70 80 90 100

6 7/8 11 13 15 18 23 26 28 32 38 42FDD

50

50 - 55 57 - 64

WiGig .11ad

64 - 71

*New* FCC

71 - 76

E Band E Band

81 - 86

W

92 - 95

FCC Oct-15 : 5G @ mmW28, 37, 39 , 64 – 71 GHz

Massive Millimetre Spectrum

15-May-17

China 802.11aj42.3-47, 47.2-48.4 GHz

802.11aj

5G Candidate..

>40GHz of bandwidth available NOW for mmWave applications with a further >80GHz bandwidth to be allocated >100GHz

TOTAL existing LTE (3/4G) Bandwidth is <2GHz…. so mmWave can provide >60x this bandwidth


Millimetre Wave Evolution to 5G

15-May-17


mmWave Wireless Networking Compact electronically steered phased

array antenna for ease of deployment

Heterogeneous networks using both licensed and unlicensed spectrum

Mesh SDN for robustness and dynamic load balancing

60GHz oxygen (V-band) attenuation helps with spectrum reuse

Applications in transport sector Rail track to Train and automotive V2X

Moving to Joint Back Haul/Access : 5G?

15-May-17

E-Band

60 GHz


Licensed vs Unlicensed 5G ?Licensed 28 & 39 GHz

pre-5G OFDM air interface

100 MHz channelization

Up to 64QAM modulation

MIMO : 2x2 to 8x8 support

Data rates:– 800 Mbps (64QAM 2x2 MIMO)

– 3200 Mps (64QAM 8x8 MIMO)

Unlicensed 57 – 71 GHz

IEEE 802.11ad/ay air interface

1760 MHz channelization

BPSK to 64QAM modulation

SC with FDE

Optional MIMO (XPIC)

Data rates– 2500 Mbps (QPSK no MIMO)

– 8000 Mbps (64QAM no MIMO)

15-May-17

Verizon 5G Technical Forum http://www.5gtf.org/


60GHz Radio Technology & Market Introduction

IBM : Millimetre wave RF at 60, 70/80

Bell Labs : 94 GHz RF PAA on SiGe BiCMOS

IMEC: PHARA 60 GHz Phased Array RF in 28nm CMOS

SiBeam: 12+12 60 GHz Phased Array in 65nm CMOS

WiGig / 802.11ad chipsets from Qualcomm, Intel…

WiGig Products from Lenovo, Dell, Netgear, TPLink….

15-May-17


5G Modem Complexity : 802.11ad Modem

High speed IQ ADC and DAC at 7b / 3.52 GHz – 2xsymbol rate

Directional TDMA MAC using active beamforming

LDPC error coding with common code length of 672 bits

Channel equalisation based on SC CEF field suitable for delay spread ~ 30 nsec RMS

Computationally intensive: 2+ Teraops for SC-FDE modem

RF EIRP to +40 dBmi (FCC Part 15.255)

15-May-17

Modems Modulation FEC code rate Data rate Symbol Rate

Single-carrier(MCS 1 – 12.6)

/2- BPSK/2- QPSK/2- 16QAM/2- 64QAM

½, 5/8, 3/4 , 13/16 MCS1 385 MbpsMCS9 2.5 GbpsMCS12 4.6 GbpsMCS12.6 8 Gbps

1760 MHz

Control (MCS0) /2- DBPSK ½ (32 chipspreading)

27.5 Mbps 1760 MHz


Modem Processing : Signal Flow and MOPs

15-May-17

Rate (G/s) Real Mults (G/s) Real Add (G/s)

Digital Filter & Downsampling 2.64 63.36 58.08

Synchronisation 1.76

Correlation 3.520 899.454

Power Calculation 3.520 1.760

Maximum Detection

Threshold Comparison 0.206 2.035

Rough CFO Estimation 0.028 0.007

Estimation

Pos/Neg CFO Compensation 1.76 15.840 14.080

Correlations 0.000 899.454

LSE Estimator 5.330 7.965

P&Q calculation 0.880 1.320

Fine CFO Estimation 0.443 1.319

Channel Estimation 0.440 0.660

Noise Power estimation 0.442 0.660

Channel DFT 15.840 15.840

MMSE Equaliser 3.960 4.840

Data Processing 1.76

Rx IQ Compensation 7.040 10.560

CFO Compensation 8.800 7.040

DFT 63.362 63.362

Equalisation 7.040 7.040

IDFT 63.362 63.362

Tracking & TS removal 0.000 0.000

Rotation calculation 0.887 1.317

Rotation compensation 6.162 6.162

TX IQ compensation 12.320 15.400

Total (GOPs/s) 282.8 2081.7

* Baseband Modulation : 60 GHz Technology for Gbps WLAN/WPAN 2011


HYDRA Baseband for mmW Wireless

HYDRA PHY

HYDRA PHY

Heterogeneous

Processor

HYDRA Data

Parallel Processor

FFT

TX Data

Subcarrier

demapping

Equalise

Demodulate

Synchronise

FFT

Subcarrier

mapping

Modulate

Cyclic Prefix

LDPC decodeLDPC encode

RF RF

RX Data

HYDRA PHY

HYDRA PHY

Heterogeneous

Processor

HYDRA Data

Parallel Processor

FFT

TX Data

Subcarrier

demapping

Equalise

Demodulate

Synchronise

FFT

Subcarrier

mapping

Modulate

Cyclic Prefix


RF RF

RX Data

15-May-17

HYDRA PHY

HYDRA PHY

Heterogeneous

Processor

HYDRA Data

Parallel Processor

FFT

TX Data

Subcarrier

demapping

Equalise

Demodulate

Synchronise

FFT

Subcarrier

mapping

Modulate

Cyclic Prefix


RF RF

RX Data

Parallel Processor Unit (PPU)of >0.5 TeraOp/s at 500MHz

Distributed Vector Data Channel

FFTLDPCNetwork

I/O

Heterogeneous Controller


FFTLDPCNetwork

I/O



FFTLDPCNetwork

I/O



FFTLDPCNetwor

kI/O

Heterogeneous ControllerSPU

Scalable vector parallel processor targeting 802.11ad ‘WiGig’ requirements

PHY1 40nm prototype with 2 Terap HYDRA and integrated 2.6GHz ADC/DAC (2014)

Integrated with 60 GHz RF and MAC in Lightning Platform as demonstrated at MWC 2015


HYDRA Processor Block Diagram

15-May-17


SIMD Control Distribution

FFTLDPC

Micro Sequencer

NetworkI/O

Micro Sequencer


PE

VM

PE

VM

PE

VM

PE

VM

PE

VM

PE

VM

PE

VM

PE

VM

Micro Sequencer

Micro Sequencer

Vector Data Distribution

SPU

CPUI/O

RISC control processorC control

program & CPU debugging

tools

Vector Accelerator

blocks

These are application dependant

High bandwidth data bus

Non-Blocking dataflow provides

concurrency

uCoded SIMD Vector Processor

uses programmable

pipelining, concurrency and data parallelism

Heterogeneous controller dispatches

co-processor instructions to

execution pipelines

Parallel HW and Vector Processor to support symbol rates greater than processor speed

Localised Data and Dataflow Hardened Component integration :

FFT, LPDC, MIMO … Scalable Components to support

roadmap to HYDRA2.0, 3.0 .. Distributed Control Development, Debugging and

Performance Monitoring via standard toolchains via standard 32b RISC


mmW PHY Modem Design

15-May-17

0 2 4 6 8 10 12 14 1610

-3

10-2

10-1

100

Es/N0 (dB)

PE

R

chType=AWGN, PSDU=8192 octets, 1000 packets/SNR, 431r3 RF impairments

MCS-2, Hg Rev: 1043, Matlab

MCS-2, Hg Rev: 1043, sTest (fixpoint)















MCS-10, Hg Rev:103, Matlab


MCS11, Hg Rev: 1043, Matlab




1% PER

-8 -6 -4 -2 0 2 4 6 8

-8

-6

-4

-2

0

2

4

6

8

Real

Imag

IEEE PHN mask, -97dB/Hz @ 1MHz, evmdB: -26.3573 snr (dB): 27.5274 PSDU error:0

0 1 2 3 4 5 6 7-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Frequency (GHz)

Gain

(dB

)

full-band Tx Filter Cascade response, Fs=3520MHz

RRC

RRC+ZOH

ABB

RRC+ZOH+ABB

Matlab > C model for implementation

PHY Link performance BER/PER including Non-ideal RF artefacts such as phase noise, IQ, CFO, SFO

Channel modelling inc multipath, LOS/NLOS

Beamforming with Phased Array Antennamodel and Beamsteering Control

Tx and Rx digital filtering for Improved ACI

MAC system model : p2p, p2mp, CBAP, TDMA and dynamic TDMA

Explore system requirements for .11ay, 5G – OFDM,MIMO, FEC, MAC etc


60GHz : Estimated Range & Delay Spread

15-May-17

Max EIRP = 40 dBmi (from FCC 15.255). Link availability 99.99%

Scaled 1:1 2:1 and 4:1 802.11ad QPSK 2.5 Gbps SC modem 10% overhead and 1:1 full duplex datastream

0

50

100

150

200

250

300

350

400

0 mm rain/hrO2+Rain atten: 15

dB/km

London : Region E22mm rain/hr

O2+Rain atten: 25dB/km

NYC: Region K42mm rain/hr

O2+Rain atten: 30dB/km

Ran

ge (

m)

250 Mbps

500 Mbps

1000 Mbps

0 50 100 150 200 250 3000

1

2

3

4

5

6

7

mean distance (m)

RM

S d

ela

y s

pre

ad (

ns)

5 deg

10 deg

15 deg

Delay spread as function of antenna beamwidth

RMS delay spread of <7 nsec

SC FDE in .11ad can equalise for >20 nsec


‘BH2’ Baseband Modem Integrated mmWave modem

– Dual HYDRA1.0_BH Modem

– Extended IEEE 802.11ad PHY/MAC

– TDD and FDD duplex support

– Support for multiple mmWave RF

– PCIe2.0 dual channel (8 Gbps)

Flexible wireless MAC layer

– 802.11ad compliant

– LINUX SW support

Development platforms Q3’17

15-May-17


Summary Flexible millimetre wireless platform

Phased array RF using mainstream semiconductors

Flexible baseband able to scale up/down from WiGig

Roadmap to 5G millimetre wave at 28/39 GHz

Roadmap to >10 Gbps with 802.11ay

UK Impact? Harmonise US and UK regulations in 57 – 71 GHz ?

Millimetre Wave test beds for transport and smart city applications to support UK 5G initiative for 2018?

15-May-17

© Blu Wireless Technology – May 2017 15-May-17

Thank youFor further info please visit

www.bluwirelesstechnology.com

or contact

[email protected]

http://www.bluwirelesstechnology.com/

mailto:[email protected]

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