Low Cost 60 GHz Backhaul: Opportunities and Challenges - Bluwireless

© Blu-Wireless 2012 – Commercial in Confidence© Blu-Wireless Technology – CW 30 Jan 2014

CW mmW Radio Workshop

January, 30, 2014

Mark Barrett, CMO

Low Cost 60 GHz Backhaul:

Opportunities and Challenges


Blu Wireless Technology Ltd

� Founded in 2009 and located in Bristol, UK

� Focus on wireless gigabit baseband PHY/MAC

� Business model based on licensing Silicon IP

� Team of 20+ industry experts in DSP & Wireless System

� Advisory board comprises:� Sir Robin Saxby (ARM Founder)

� Glenn Collinson (CSR Founder) : also Non Exec Director

� Prof Andrew Nix (Wireless expert, University of Bristol)

� Members of the WiFi Alliance

� Gigabit Digital Baseband (DBB) for lead customer

Page 231-Jan-14


Why Multi Gigabit Wireless?

�High speed data transfer

onto mobile platforms for

‘Sync & Go’

�HDMI cable replacement for

HD content or 3D gaming

�Cheap deployment of self-

organising networks of small

cells on lamp posts, etc.

<$1K >$10K

Page 331-Jan-14


WiGig projected to add 1.5B by 2018…

Page 431-Jan-14


60GHz Technology & Market Introduction

Page 531-Jan-14

� Numerous development of 60 GHz

RF on CMOS (65>40>28nm) and SiGe

for 5+ years

� IBM 60 GHz Phased Array (PAA)

� Wireless HD entered market in

2009 : 4 Gbps at 10m

� Silicon Image Gen3 60GHz PAA

� WiGig / 802.11ad

� Wilocity WiGig Chipset : DELL laptop


60GHz Frequency Allocation

� Worldwide set of license

free frequency bands

� Channel bandwidth of >2

GHz with 4 centre

frequencies for WiGig

� Spectral Mask enables both

SC and OFDM modulation

schemes

� Option to Sub-divide for

greater capacity and

extended range?

Page 631-Jan-14


WiGig/802.11ad Complexity

� High speed IQ ADC and DAC at 8b / 2.64 GHz sample rate

� Directional MAC using beamforming : acquisition & training

� LDPC error coding with common code length of 672 bits

� Computationally intensive: 2+ Teraops for SC-FDE modem

Page 731-Jan-14

Modems Modulation FEC code rate Data rate Sample Rate

Single-carrier π/2- BPSK

π/2- QPSK

π/2- 16QAM

½, 5/8, 3/4 ,

13/16

385 Mbps –

4.62 Gbps

1760 MHz

OFDM Spread QPSK

QPSK

16 QAM

64 QAM

½, 5/8, 3/4 ,

13/16

693 Mbps –

6.76 Gbps

2640 MHz

Control π/2- DBPSK ½ (32 chip

spreading)

27.5 Mbps 1760 MHz


Baseband Modem Architecture

Page 831-Jan-14

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

500 MHz Hydra 4xPPU Array

Delivers 2 TeraOp/s

Distributed Vector Data Channel

FFTLDPCNetwork

I/O

Heterogeneous Controller


FFTLDPCNetwork

I/O



FFTLDPCNetwork

I/O



FFTLDPCNetwork

I/O


METACtrl

CPU

VPU

TDD T/R Switch in <1usec

2.64 GHz

DFE


Firmware

Configuration

Roadmap

Modem Application Flexibility

Page 931-Jan-14

Range

Da

ta R

ate

100M

1G

10G

1m 10m 1km

HYDRA WGA_2.0� Next generation WiGig applications

� Data Rate 4 – 16 Gbps

� Multi-RF compliant DFE + 8 PPUs

� RF Channel bonding plus MIMO support

HYDRA BH_1.0� 4G Back Haul

� Data Rate 0.5 – 2 Gbps

� PAA RF DFE + 4 PPUs

� Programmable Channel width

� SC-FDE QPSK, 16QAM

HYDRA WGA_1.0� WiGig Data-sync, HD streaming, etc.

� Data Rate 1 – 7 Gbps

� Multi-RF compliant DFE + 4 PPUs

� SC-FDE & OFDM QPSK, 16QAM & 64 QAM

100m

4G

4m


60 GHz Wireless Back Haul � Worldwide unlicensed spectrum

� Oxygen attenuation supports high

spectrum reuse

� Compact phased array antenna

� Mesh network for ease of

deployment (multiple antennas per

cell)

� Potential for Joint Back Haul/Access

Page 1031-Jan-14

E-Band

60 GHz


60GHz Backhaul : Estimated Range

Page 1131-Jan-14

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

Scaled 1:1 2:1 and 4:1 802.11ad WiFi QPSK SC modem

10% overhead and 1:1 full duplex datastream

0

50

100

150

200

250

300

350

400

0 mm rain/hr

O2+Rain atten: 15 dB/km

London : Region E

22mm rain/hr


NYC: Region K

42mm rain/hr


Ra

ng

e (

m)

250 Mbps

500 Mbps

1000 Mbps


10yr TCO Backhaul Comparison

Page 1231-Jan-14

$-

$10,000,000

$20,000,000

$30,000,000

$40,000,000

$50,000,000

$60,000,000

$70,000,000

NLOS Wireless backhaul LOS 60G Wireless p2p backhaul LOS 60G 'WiFi' MESH Wireless

backhaul

Equipment

Costs

Planning, Deployment

& Installation

Spectrum

Costs

Building/Tower

Lease Expenses

Pole Lease

Expenses

Power

Expenses

Maintenance

& Support

Note : assumes cost reduction per 60G link from $8k to $2k

Total Cost of Ownership (TCO) over 10yrs for installation of 3,000 SCs.

Methodology: White Paper published by BLINQ Networks August 2012.

$50M

$63M

$32M

$30M saving scales

to $750M for London


Ofcom on Fixed Wireless Systems at 60 GHz

(December 2009)

Ref: Ofcom, “Release of the 59 – 64 GHz Band,” A statement on Ofcom’s decision for a licence exempt approach for Fixed Wireless Systems in the 60 GHz Band, 11 Dec 2009

Page 13


ETSI - EN 302 217-3 V1.3.1 (2009-07)

UBa.2.1 Transmitter power, antenna gain and Equivalent

Isotropically Radiated Power (EIRP)

The following transmitter output power, antenna gain and EIRP limits

are set by CEPT/ECC/Recommendation 09-01 [4]:

• Maximum EIRP: +55 dBm.

• Minimum antenna gain: +30 dBi.

• Maximum transmitter output power: +10 dBm.

In addition, in order of safeguarding a fair and efficient use of the

spectrum, emissions of equipment in the scope of the present

document shall be further limited as follows:

1a) EIRP (dBm)

≤ 55 for Gant ≥ 45 dBi.

≤ +10 + Gant (dBi) for 45 dBi > Gant ≥ 38 dBi.

≤ -28 + 2 * Gant (dBi) for 38 dBi > Gant ≥ 30 dBi.

2a) EIRP density (dBm)

≤ -10 dBm/MHz + Gant (dBi).

Graphical relationship among EIRP limitation, antenna gain and output power

Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas;

Note: Pout max of +10 dBm only applies if Ga > 38 dBi

Page 14


Economic Impact of Regulations : EU vs US

Page 1531-Jan-14

40 dBmi

55 dBmi

US : FCC

15.255

EU :

CEPT REC(09)01 &

ETSI 302 217

Allows Gain &

power tradeoff

Min gain >30 dBi

Max power <+10 dBm

Innovation:

Low Cost

Phased Array &

60 GHz WiFi

Mechanically

Steered Antenna &

Custom modem

<$1k/link

>$8k/link


Summary

� 60 GHz wireless technology can deliver significant cost

reduction for wireless backhaul

� Current EU radio regulations do not allow direct

deployment of phased array technology for backhaul

� Outdoor operation of WiGig CE devices will already

violate EU CEPT REC(09)01 rules so why constrain

application of phased array technology for backhaul?

� Urgent need to review and harmonise EU 60 GHz radio

regulations with US to stimulate deployment of low

cost 60GHz wireless backhaul in Europe!

Page 1631-Jan-14

© Blu-Wireless 2012 – Commercial in Confidence© Blu-Wireless Technology – CW 30 Jan 2014 Page 1731-Jan-14

Thank you

For further information please visit

www.bluwirelesstechnology.com

or contact

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