الرحيم الرحمن الله بسم

2010

Milestones in thehistory of OFDM

Collected By: Eng. SINAN M. A. DHEYAB

[ESM012345@GMAIL.COM]

الرحيم الرحمن الله الرحيمبسم الرحمن الله الرحيمبسم الرحمن الله بسم

Milestones in theMilestones in theMilestones in thehistory of OFDMhistory of OFDMhistory of OFDM

C ollec ted B y: E ng . S I N A N M. A .DH E Y A B

OFDM HISTOR Y

MilestoneYear

Kineplex, multi-carrier HF modem (R.R. Mosier & R.G.Clabaugh)

1957

TheconceptofparalleldatatransmissionbyDoelzet al.Some earlier work was Holsinger’s 1964 MIT dissertationandsomeofGallager’s earlyworkonwaterfilling.

1964

Chang shows that multi-carrier modulation can solve themultipath problem without reducing data rate. This isgenerally considered the firstofficialpublication on multi-carriermodulation.

1966

Saltzberg studied a multi-carrier system employingorthogonalQAM(O-QAM) ofthecarriers.

1967

U.S. patentonOFDM issued.1970WeinsteinandEbertshowthatmulti-carriermodulationcanbeaccomplishedusingaDFT. Weinstein& EbertproposeduseofFFT andguardinterval.

1971

Hirosaki designed a subchannal-based equalizer for anorthogonallymultiplexedQAM system.

1980

Keasleretal.describedanOFDM modem fortelephonenetworks.CyclicPrefix(CP) usedin1980 – orthogonalityproblembeingsolved.CiminiatBellLabs identifies manyofthekeyissues inOFDM transmissionanddoes aproof-of-conceptdesign.CiminidescribeduseofOFDM formobilecommunications

1985

TelebitTrailblazerModem introducedincorporatinga 512carrierPacketEnsembleProtocolAlard& Lasalle: COFDM fordigitalbroadcasting1987TH-CSF LER, firstexperimentalDigitalTV linkinOFDM,Paris area

1988(September)

OFDM internationalpatentapplicationPCT/FR 89/00546,filed in the name of THOMSON-CSF, Fouche, de

1989

Couasnon, Travert, Monnier and all..http://www.wipo.int/pctdb/en/wo.jsp?WO=1990/04893October1990: TH-CSF LER, firstOFDM equipmentfieldtest, 34 Mbit/s inan8 MHzchannel, experiments inParisarea

1990

December 1990: TH-CSF LER, first OFDM test bedcomparisonwithVSB inPrincetonUSA.ANSI ADSL standard.1991September 1992: TH-CSF LER, second generationequipmentfieldtest, 70 Mbit/s inan8 MHz channel, twinpolarisations. Wuppertal, Germany

1992

October 1992: TH-CSF LER, second generation field testandtestbedwithBBC, nearLondon, UKDSL adopts OFDM, alsocalleddiscretemulti-tone,followingsuccessful field trials/competitions at Bellcore versusequalizer-basedsystems.

1993

TH-CSF showinMontreuxSW, 4 TV channelandoneHDTV channelinasingle8 MHzchannelMorris: Experimental150Mbit/s OFDM wireless LANUS patent5282222, Methodandapparatus formultipleaccess betweentransceivers inwireless communicationsusingOFDM spreadspectrum.

1994

ANSI HDSL standard.ETSI Digital Audio Broadcasting standard EUreka: firstOFDM basedstandard.

1995

ETSI WLAN standard.1996

ThefirstpaperonopticalOFDM intheopenliteraturewasreportedbyPanandGreen.ETSI DVB-T standard.1997MagicWAND projectdemonstrates OFDM modems forwireless LAN.

1998

ANSI VDSL andETSI VDSL standards.ETSI BRAN standard.

TheIEEE 802.11 committeeonwireless LANs releases the802.11astandardforOFDM operationin5GHzUNI band.IEEE 802.11awireless LAN standard(Wi-Fi)

1999

ETSI BRAN Hiperlan/2 standards forwireless LAN.Proprietary fixed wireless access (V-OFDM, Flash-OFDM,etc.)

2000

OFDM consideredfornew802.11 and802.16 standards.2001Dixonetal. proposedtheuseofOFDM tocombatmodaldispersioninmultimodefiber(MMF).TheIEEE 802.16 committeereleases anOFDM-basedstandardforwireless broadbandaccess formetropolitanareanetworks underrevision802.16a.

2002

IEEE 802.11gstandardforwireless LAN.

The IEEE 802.11 committee releases the 802.11gstandardforoperationinthe2.4GHzband.

2003

Themulti-bandOFDM standardforultra-widebandisdeveloped, showingOFDM’s usefulness inlow-SNRsystems.OFDM consideredforUWB (802.15.3a).IEEE 802.16-2004 standardforwireless MAN (WiMAX)2004

ETSI DVB-H standardCandidate for IEEE 802.15.3a standard for wireless PAN(MB-OFDM)Candidate forIEEE 802.11n standardfornextgeneration

wireless LANOFDMA is candidateforthe3GPP LongTerm Evolution

(LTE) airinterface E-UTRA downlink.Candidate for3.75Gmobile cellular standards(3GPP &3GPP2 Long TermEvolution) named High Speed OFDM packet Access(HSOPA)

2005

Candidate for 4G standard in China, Japan and SouthKorea(CJK).

The first complete LTE air interface implementation wasdemonstrated, including OFDM-MIMO, SC-FDMA andmulti-userMIMO uplink.

2007

Multi-userMIMO-OFDM fornext-generationwireless.AdaptiveHSDPA-styleOFDM andMC-CDMA transceivers100 Gb/ CO-OFDsM transmissionover1000 km standardsingle-modefiber(SSMF) withhighspectralefficiencyof2bit/s/Hzhas beendemonstratedbyvarious groups.

Todate,

As the industry is embracing the imminent commercialrolloutof100 Gb/s Ethernet(100 GbE), thefeasibilityof1Tb/s Ethernetis the nextlogicalstep.Also,multimode fiberin conjunction with multiple-input multiple-output OFDM(MIMO-OFDM) is proposedas atechnologytoachieve100Tb/s perfiberthattakes advantageofmodemultiplexingintheopticalfiber.

Future

REFERENCES

1) www.wikipedia.com.2) OFDM and MC-CDMA A Primer, L. Hanzo & T. Keller.3) Multiuser MIMO-OFDM for Next-Generation Wireless Systems, Vol. 95,

No. 7, July 2007 | Proceedings of the IEEE, Jiang and Hanzo.4) OFDM for Optical Communications,,, William Shieh&Ivan Dj ordj evic.William Shieh&Ivan Dj ordj evic.William Shieh&Ivan Dj ordj evic.5) Synchronization and Channel Estimation in OFDM: Algorithms forSynchronization and Channel Estimation in OFDM: Algorithms forSynchronization and Channel Estimation in OFDM: Algorithms for

Efficient Implementation of WLAN SystemsEfficient Implementation of WLAN SystemsEfficient Implementation of WLAN Systems,,, Alfonso LuAlfonso LuAlfonso Luí s Troyaí s Troyaí s TroyaChinchilla.Chinchilla.Chinchilla.

6) Multicarrier Communications,Lecture 1 :Introduction & ofdm basics ,Jian(Andrew) Zhang...

7) MIMO-OFDM for LTE,WiFi, and WiMAX : coherent versus non-coherentand cooperative turbo-transceivers , L. Hanzo, L. Hanzo, L. Hanzo, J, J, J. Akhtman, L. Wang,. Akhtman, L. Wang,. Akhtman, L. Wang,M. Jiang.M. Jiang.M. Jiang.