Slides LTE System

7/24/2019 Slides LTE System

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MINISTRY OF EDUCATION OF UKRAINEKHARKOV NATIONAL UNIVERSITY OF RADIO ELECTRONICS

DEPARTMENT OF TELECOMMUNICATION SYSTEMS ENG.

Executor :Kh !ru"" h A"! K #!"Su$er%!&or : Professor Loshakov V.A .

KHARKOV '()*

I+cre &!+, Co##u+!c t!o+& -u "!t o/ LTES &te# U&!+, OFDM Tech+!0ue&


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Mobile GenerationsMobile communication has become the most important requirementsof global societies. In the last century, technology has evolved from

being expensive to a small number of individuals available to anda ordable for the vast majority of the population of the world.Mobile generations started from G to !G "#

$ero generation of Mobile phones In %&!', the (ero generation ) G* ofmobile telephones was introduced.

+dvanced Mobile hone -ystem )+M -* /irst Generation, )%&01#%&2&*, It was the +nalog mobile phone standard, 3rst generationcellular technology that uses separate frequencies.

-econd Generation )%&& *, 4he second generation )1G* of the wirelessmobile networ5 was based on low#band digital data signaling. 4hemost popular 1G wireless technology is 5nown as Global -ystems forMobile 6ommunications )G-M*. G-M systems.-econd Generation 1G7 )1.'G 8 1.0'G* 9.:. ;etwor5s )%&& # 1 *, 2.5G: General ac5et ata

rate for Global =volution ) EDGE *. 1


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Mobile Generations 4hird Generation )?G* 9ireless ;etwor5s )1 #1 %% -4I::*,

@ne of the most important aspects of ?G wireless technologiesis its ability to unify existing cellular standards, such as 6>M+,G-M, and 4>M+, less than one umbrella. 4he following three airinterface modes accomplish this result" wideband 6>M+,6>M+1 and the Aniversal 9ireless 6ommunication )A96#%?B* interfaces, ?G is the third#generation technology also5nown as AM4- )Aniversal Mobile 4elecommunications -ystem*.

/ourth Generation )1 %% *!G promises =conomic deployment ofsystems with optimi(ed radio interfaces among macro cells,micro cells, indoor, hot spots and broadcast networ5s, andpromises to accommodate mixed#mode multi#standard services,and to employ any future services. :4=#+dvanced will be anincrease of the maximum transmission bandwidth beyond 1MC(, perhaps up to as high as % MC( or even beyond.

?


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!

6omparisons between 1.', 1.0', ?and !G


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'

landscapes of mobile radio systems


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B

9hatDs mean :ong 4erm =volution EThe 3GPP Long Term Evolution (LTE) standard represents

a major advance in cellular technology. :4= is designed to meetcarrier needs for high#speed data and media transport as well ashigh#capacity voice support well into the next decade. :4= is wellpositioned to meet the requirements of next#generation mobilenetwor5s. It will enable operators to o er high performance,mass#mar5et mobile broadband services, through a combinationof high bit#rates and system throughput F in both the uplin5 and

downlin5 with low latency.

B !"groun# "4he wor5 towards :4= standardi(ation started in;ovember 1 ! in a ?G


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3 GPP RE$LESES P r meter%

0


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Features of Long Term EvolutionLong Term Evolution offers the following features: Up to 100 Mbps(Downlink) Up to !0 Mbps (Uplink) "implifie# $r%hite%ture Advanced MIMOSpatial Antenna Technology , Open Interfaces , Fle i!le ,Fre"#ency $F%%&T%%', All IP (ack!one and @/>M+ subdivides the available bandwidth for

signal transmission into a multitude of narrowband subcarriers.Purpose of OFDMA "# Increasing performance communication

systems .

Advantages and disadvantages in OFDMA

Advantages of OFDMA:

Atili(ation of di erent spectrum bandwidths without changing basic

system parameters or equipment design.

:ow complexity of receiversDisadvantages of OFDMA

ea5#to#+verage ower


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4echnologies +ssociated with :4=6ompare etween :4= 8 9iMax

&i'$ is a short name for 9orldwide Interoperability ofMicrowave +ccess. 9iM+H is described in I=== 2 1.%B 9irelessMetropolitan +rea ;etwor5 )9M+;* standard. 9iM+H is anemerging technology that provides high#speed mobile data andtelecommunication services.

Simil ritie% et*een &i' + n# LTE:, oth expect speeds to be in the % Mbps range. oth use @/>M, @/>M will be used in 9iMax, but a technology

called -6#/>M+ )-ingle 6arrier#/requency >ivision Multiple+ccess* will be used in :4=. -6#/>M+ is theoretically designed towor5 more eJciently with lower#power end#user devices than@/>M.

oth have Multiple Input Multiple @utput )MIM@* antennatechnology. which means that information, is sent over two ormore antennas from a single cell site to improve reception. In

tough transmission locations, such as a dense downtown area,MIM@ could be a relatively inexpensive means of improving


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6ompare etween :4= 8 9iMax

%


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-rthogon l re/uen!0 Divi%ion 'ulti1le+ing (- D') i% te!hnolog0 th t # te% !" to the 4 6%. t * %!on%i#ere# 8or 3G %0%tem% in the mi#, % e8ore eing#etermine# too imm ture. Develo1ment% in ele!troni!%

n# %ign l 1ro!e%%ing %in!e th t time h % m #e - D'm teur te!hnolog0 *i#el0 u%e# in other !!e%% %0%tem%

li"e 9 2. (&i, i) n# 9 2. 4 (&i'$ ) n# ro #! %t%0%tem% (Digit l $u#io ;i#eo Bro #! %t < D$B D;B).

(- D') i% mo#ul tion te!hni/ue %e# on the i#e o8%1litting the !h nnel into #e=ne mount > o8n rro* n# n# in#e1en#ent %u ,!h nnel% th t re%u11o%e# to h ve ? t 8re/uen!0 re%1on%e.(- D')in!lu#ing the u%e o8 - D' in v riou% !urrent %t n# r#%

th t #em n# high # t r te% n# ver0 lo* error r te%*hen tr n%mitting over *irele%% multi1 th !h nnel%.@h llenge% to high # t r te n# lo* error r tetr n%mi%%ion% re n l0Ae# 0 e+ mining the!h r !teri%ti!% o8 *irele%% !ommuni! tion !h nnel%.The #e%ign o8 the LTE 1h0%i! l l 0er (P C) i% he vil0in?uen!e# 0 the re/uirement% 8or high 1e "

-rthogon l re/uen!0 Divi%ion'ulti1le+ing


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+daptive modulation in frequency domain )a* K+M%B)b* K+MB!

%1


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#:4=

%?


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4ransmitter and receiver structure of @/>M+ 4ransmitter and receiver structure of -6#

/>M+


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@->@L S ->In the First topic is (Mobile Generation) Te!hni/ue% re o8ten %1r te

into gener tion% in mo ile !ommuni! tion% *ith G eing n logmo ile r #io %0%tem% o8 the 9 % 2G mo ile %0%tem% the =r%t #igit l

n# 3G %0%tem% to #e l *ith the =r%t mo ile ro # n# # t . % o8ten! lle# the long,term evolution (LTE) 3. G . $ %e!on# ver%ion o8 LTE * %#evelo1e# in Rele %e n# Rele %e !ontinue% the 1rogre%%ion *iththe eginning o8 the ne+t %igni=! nt %te1 "no*n % LTE,$#v n!e# HGI.

In the Second topic is (L !) corresponds to intro#u!tion the gener l LTE !"groun# n# the !om1 ri%on et*eenLTE n# other te!hnolog0 (&i'$ ) Simil ritie% n# DiJerent. The over llintent i% to 1rovi#e n e+tremel0 high,1er8orm n!e r #io, !!e%%te!hnolog0 th t oJer% 8ull vehi!ul r %1ee# mo ilit0 n# th t ! n re #il0!oe+i%t *ith SP$ n# e rlier net*or"%. Be! u%e o8 %! l le n#*i#tho1er tor% *ill e le to e %il0 migr te their net*or"% n# u%er% 8rom

SP$ to LTE over time.In hird topic is 1rin!i1le% o8 =r%t %t ge o8 LTE Te!hnolog0 u%ing

orthogon l 8re/uen!0 #ivi%ion multi1le+ing (o8#m) Te!hnolog0 . Di%!u%%- D' theor0 in LTE @ommuni! tion%: Theor0 n# $11li! tion% o8 - D'

n# #i%!u%e% ho* LTE u%e% - D'$ on the #o*nlin" n# u%e S@, D'$ onthe u1lin" % #v nt ge *hi!h i% *ell %uite# to !hieve high 1e " # tr te% in high %1e!trum n#*i#th n# #i%!u%e% S!he#uling 11ro !he%in the 8re/uen!0 #om in ! n l%o minimiAe inter8eren!e there 0

oo%ting %1e!tr l eF!ien!0. %'


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4han5s for listening L NOPQR ST U V

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