LTE Data Rate Calculation
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LTE Data Rate Calculation July 9, 2011 Capacity , LTE LTE , QAM , Peak LTE data rate can be calculated using the following parameters: 1Time-slot=0.5ms(i.e1Sub-frame=1ms) 1Time-slot=7 Modulation Symbols (when normal CP length is used) 1 Modulation Symbol=6 bits; if 64 QAM is used as modulation scheme Data rate for a single carrier=Number of symbols per time slot*Bits per symbol/Duration of a time slot=7*6/0.5e-3=84kbps If 1200 carriers (100RBs) are used then the aggregated throughput would be=1200*84kbps=100.8Mbps If 4×4 MIMO is used then the capacity would increase four fold to=403.2Mbps With 3/4 channel coding the data rate would be reduced to=302.4Mbps Note: 1. A Resource Block (RB) =12 Carriers 2. Actual data rate would depend upon the instantaneous channel conditions and number of users sharing the resources e.g. going down from 64QAM to QPSK in adverse channel conditions would reduce the data rate from 302.4Mbps to 100.8Mbps. Changing the code rate from 3/4 to 1/3 would further reduce the data rate to 44.8Mbps.
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1Time-slot=0.5ms(i.e1Sub-frame=1ms)1Time-slot=7 Modulation Symbols (when normal CP length is used)1 Modulation Symbol=6 bits; if 64 QAM is used as modulation schemeData rate for a single carrier=Number of symbols per time slot*Bits per symbol/Duration of a time slot=7*6/0.5e-3=84kbpsIf 1200 carriers (100RBs) are used then the aggregated throughput would be=1200*84kbps=100.8Mbps
Transcript of LTE Data Rate Calculation
LTE Data Rate CalculationJuly 9, 2011 Capacity, LTE LTE, QAM,Peak LTE data rate can be calculated using te !"ll"#ing para$eters%1Ti$e&sl"t'0()$s*i(e1+ub&!ra$e'1$s,1Ti$e&sl"t'- M"dulati"n +y$b"ls *#en n"r$al CP lengt is used,1 M"dulati"n +y$b"l'. bits/ i! .0 QAM is used as $"dulati"n sce$e1ata rate !"r a single carrier'2u$ber "! sy$b"ls per ti$e sl"t34its per sy$b"l51urati"n "! ati$e sl"t'-3.50()e&6'70kbps8! 1200 carriers *10094s, are used ten te aggregated tr"ugput #"uldbe'1200370kbps'100(7Mbps8! 0:0 M8M; is used ten te capacity #"uld increase !"ur !"ld t"'006(2Mbpserage tr"ugput c"rresp"nding t" +829 rangeLet us c"nsider te !"ll"#ing distributi"n !"r te +829 at te cell edge%P1'0()*+829'1()0&6()0d4,P2'0(2)*+829'6()0&-(00d4,P6'0(1)*+829'-(00&9()0d4,P0'0(10 *+829'9()0&11()0 d4,Cell Tr"ugput ' *0()030, D *0(2)3., D *0(1)37,D*0(10312, ' )(9 Mbps2"te% Tis tr"ugput is $uc less tan te te"retical $aBi$u$ #ic assu$es tat te !ull 20MEF band#idt is being utiliFed in a 0:0 M8M; c"n!igurati"n(
