The Peak Data rate of LTE is about 400Mbps?
It’s in a simple way to calculate date rate in
LTE.
First: Assume That 20 MHz channel
bandwidth, normal CP, 64QAM and 4x4 MIMO technology are used.
Second: Calculate the number of
resource elements (RE) in a subframe with 20 MHz channel bandwidth:
12 subcarriers x 7 OFDMA symbols x
100 resource blocks x 2 slots= 16800 REs per subframe. Each RE can carry a
modulation symbol.
Third: Assume 64 QAM modulation and no coding, one
modulation symbol will carry 6 bits.
The total bits in a subframe (1ms)
over 20 MHz channel is 16800 modulation symbols x 6 bits / modulation symbol =
100800 bits. So the data rate is 100800 bits / 1 ms = 100.8 Mbps.
Fourth: with 4x4 MIMO, the
Peak Data rate goes up to 100.8 Mbps x 4 = 403 Mbps.
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