Sub Sub-Ter eraH aHertz wav ave ultra ra-wideband wirel eless c ess communica cations Guillermo Carpintero Universidad Carlos III de Madrid www.iphos-project.eu CPMT Webinar September 11 th 2013 1
Index ex Why th Why the inte teres est of of S Sub ub-Ter eraH aHer ertz tz wav ave Wir Wireless Comm mmunic icatio ions? Over erview o of a a mmW mW /su sub-THz w z wirel eles ess l link Ph Photonic c En Enabled W Wireles ess T Tran ansmitter er E-ban and W Wireles ess T Transmitter ter E-band W Wirel eless R Recei eceiver er F-ban and W Wireles ess T Tran ansmitter er CPMT Webinar June 17 th 2013 2
Wh Why the he intere rest of of Sub Sub-Ter eraHer ertz wav ave Wir Wirele less Comm ommuni nication ons? What ar are e sub-THz wav aves? Terahertz waves are electromagnetic waves with frequency within the range 100 GHz to 100 THz, between infrared light and radio waves. Sub-THz waves are electromagnetic waves below 100 GHz CPMT Webinar June 17 th 2013 3
Wh Why the he intere rest of of Sub Sub-Ter eraHer ertz wav ave Wirele Wir less Comm ommuni nication ons? What t is the inter eres est o t of wirel eles ess? 1995 1995 Telecommunications milestones: • Beco coming digital tal, bringing multimedia • Packet et switc tching, bringing "always on" connectivity • Wirel eles ess, bringing functional mobility. Functi ctional al m mobility ty has resulted ed in a REVOLUTION . . . . 2007 2012 Take a Picture 82 Send/Receive text messages 58 80 Send/Receive email 19 50 Access Internet 25 56 Record Video 18 44 Online Banking 18 (2011) 29 http://www.forbes.com/sites/chuckjones/2012/11/29/ what-do-people-use-their-cell-phones-for-beside- phone-calls / . . . . . . . . be because people e are m e mobile http://tag.microsoft.com/community/blog/t/the_growth_of_mobile_marketing_and_tagging.aspx CPMT Webinar June 17 th 2013 4
Why the Wh he intere rest of of Sub Sub-Ter eraHer ertz wav ave Wirele Wir less Comm ommuni nication ons? What t is the inter eres est o t of wirel eles ess? Analysis and predictions today Mobile will drive the increase in data traffic • Video will account for half of global mobile data Vi • traffic by 2018 Smartphone hone traffic will increase by ~10% in 2018 • http://www.ericsson.com/res/docs/201 3/ericsson-mobility-report-june- 2013.pdf Traditional PTP technologies use channel widths up to 56 MHz • restricting raw Ethernet throughput to around 360 Mbps. Gigabit speeds would need 156 MHz of spectrum, an amount not • available in the traditional Licensed Microwave Bands. CPMT Webinar June 17 th 2013 5
Wh Why the he intere rest of of Sub Sub-Ter eraHer ertz wav ave Wir Wirele less Comm ommuni nication ons? "The solution to the spectrum problem, is not redistributing the spectrum, is not taking spectrum away from one entity, not even sharing the spectrum, it is in fact is creating new capacity, is creating new spectrum...." Martin Cooper @ "The Communicators" on Saturday, March 6, 2010. CPMT Webinar June 17 th 2013 6
Wh Why the he intere rest of of Sub Sub-Ter eraHer ertz wav ave Wirele Wir less Comm ommuni nication ons? How ow can n sub ub-TH THz waves help? p? Spectrally efficient coding of the information Options to increase the Free-space optical links bandwidth Increase the carrier frequency, using simple modulation formats (ASK, FSK) creating new capacity CPMT Webinar June 17 th 2013 7
Why hy the he i int nterest of of Sub Sub-TeraH aHertz tz w wave e Wirel eles ess C s Communica cations? s? mmW a mmW and nd sub ub-THz w wave e bands a advan anta tages es Spectrally efficient coding of the information: Computational cost & complex Options to increase the Free-space optical links: Affected by fog, snow or sand storms bandwidth Increase the carrier frequency, using simple modulation formats (ASK, FSK) • Cost Effective (up to 10 km link): tend to be short range (below 5 km) due to a combination of water and oxygen absorption in the atmosphere. Suitable to replace fiber “last mile” link, where is the most expensive. • Frequency Re-Use Potential: Short-range nature provides advantages in frequency re-use . Suitable for street level deployments in a small geographical area. • Small Antennas: Higher frequencies, smaller antenna size, for compact systems. CPMT Webinar June 17 th 2013 8
Wh Why the he intere rest of of Sub Sub-Ter eraHer ertz wav ave Wir Wirele less Comm ommuni nication ons? Curren ently r releas eased ed mmW bands 19 GHz of License Exempt or Light License spectrum UK 57-64 GHz License Exempt, UK 64-66 GHz Light License FCC 92-95 GHz Light License ETSI 57-66 GHz License Exempt FCC/IC 57-64 GHz License Exempt UK/EIRE/ETSI/FCC 81-86 GHz UK/EIRE/ETSI/FCC 71-76 GHz Light License Light License Light License is where the Licensee pays a small administrative fee and registers the radio link with the regional regulatory body. This information is used to inform other potential users of the spectrum that there is already a radio link or links in the area when they register their own link prior to deployment. CPMT Webinar June 17 th 2013 9
Why hy the he i int nterest of of Sub Sub-TeraH aHertz tz w wave e Wirel eles ess C s Communica cations? s? Areas eas of a applica cati tion Fixed ed W Wirel eles ess Acces ess Mobile Backhaul for Small Cells • Disaster recovery • Transmission of uncompressed • HDTV signals in sport events Close e Proximity ty Wirel eless C Communica cati tions Comms with mobile devices • The futu ture i e is c calling f for t r the combinati tion of I Intern ernet et and Wirel eles ess CPMT Webinar June 17 th 2013 10
Over ervi view o of a mmW mmW /sub ub-THz wirel eless l ess link Wirel eless link b building b blocks Tx Rx CPMT Webinar June 17 th 2013 11
Over ervi view o of a mmW mmW /sub ub-THz wirel eless l ess link Path L Loss ss - Free ee Space ce Propagati tion Loss ( (FSPL) ( ) ( ) = + + FSPL ( dB ) 92 . 4 20 log f ( GHz ) 20 log d ( km ) 10 10 FSPL (dB) 900 2.4 5.8 60 Distance (km) MHz GHz GHz GHz 0.001 31.48 40.00 47.67 67.96 0.01 51.48 60.00 67.67 87.96 0.1 71.48 80.00 87.67 107.96 1 91.48 100.00 107.67 127.96 10 111.48 120.00 127.67 147.96 Can be compensated with Antenna Gain ( ) ( ) = + + + + FSPL ( dB ) G G 92 . 4 20 log f ( GHz ) 20 log d ( km ) rx tx 10 10 CPMT Webinar June 17 th 2013 12
Over ervi view o of a mmW mmW /sub ub-THz wirel eless l ess link Path L Loss ss – Atm tmospheric Atten Attenuati tion CPMT Webinar June 17 th 2013 13
Over ervi view o of a mmW mmW /sub ub-THz wirel eless l ess link Enabling technologies es MMIC (HEMT) Multiplier chains (SBD) Electronic-based High degree of integration High output power Electrical RF Electrical Data carrier Modulator generation Tx Optical Heterodyning Mode Locked Lasers Photonic-based Bandwidth Energy Efficiency Optical RF Optical Data O/E carrier Modulator Converter generation CPMT Webinar June 17 th 2013 14
Over ervi view o of a mmW mmW /sub ub-THz wirel eless l ess link Electr ctronic / c / Photonic c Wirel eles ess System tem Compari arison NTT Experi erien ence ce Carrier Tech Speed Distance 120 GHz InP HEMT MMICs 11 Gbps 5,8 Km from T. Kosugi et al “Broadband InP MMICs for 120 GHz Wireless Data Communications” IEEE 2013 H. Takahashi “10-Gbit/s Phase-shift Keying Modulator and Demodulator MMICs for 120- GHz-band Wireless Link” NTT Tech Rev 2012 CPMT Webinar June 17 th 2013 15
Over ervi view o of a mmW mmW /sub ub-THz wirel eless l ess link Electr ctronic / c / Photonic c Wirel eles ess System tem Compari arison NTT Experi erien ence ce Carrier Tech Speed Distance 120 GHz Photonics 10 Gbps 2 Km “Photonic technologies enable the effective use of radio-over-fiber technologies in the link configuration, while all-electronic technologies have advantages in size and cost” Photonic integration also enhances performance (quality of generated signal). N. Kukutsu “ 10-Gbit/s Wireless Link Systems Using the 120-GHz Band ” IEEE APS 2008. CPMT Webinar June 17 th 2013 16
Over ervi view o of a mmW mmW /sub ub-THz wirel eless l ess link Recen cent w t works Carrier Speed Carrier Data Tx Rx Distance (GHz) (Gb/s) Generation Modulation element element Het. Photonic External IEMN, 400 22 UTC-PD Sub Harm 2 m Dual- λ Het. MZM FR Mixer Bell Lab 107 MLL - UTC-PD - USA THz IEMN, 200 0,250 Electronic 50 cm rectifier FR Photonic Doub. Bal. NICT Dual- λ Het. 300 5 External UTC-PD 20 cm Mixer JP with OFC Photonic NTT 300 12.5 External UTC-PD SBD 50 cm Dual- λ Het. JP CPMT Webinar June 17 th 2013 17
Photonic E c Enabled ed W Wirel eless T ess Tran ansm smitter www.iphos-project.eu Develop Compact act, low power, high performance Wirel eless transceivers Operating at sub ub-ter terah aher ertz tz c carri rier er wave frequencies Based on Photonic I c Integrated ted Circu cuits ts to address: Size Cost Reliability Performance CPMT Webinar June 17 th 2013 18
Recommend
More recommend
