DANORM
2012-05-22, 02:35 PM
From the 3gpp specification:
1 Radio Frame = 10 Sub-frame
1 Sub-frame = 2 Time-slots
1 Time-slot = 0.5 ms (i.e1 Sub-frame = 1 ms)
1 Time-slot = 7 Modulation Symbols (when normal CP length is used)
1 Modulation Symbols = 6 bits; if 64 QAM is used as modulation scheme
Radio resource is managed in LTE as resource grid..
1 Resource Block (RB) = 12 Sub-carriers
"Assume 20 MHz channel bandwidth (100 RBs), normal CP"
"Therefore,"
number of bits in a sub-frame = 100RBs x 12 sub-carriers x 2 slots x 7 modulatio
n symbols x 6 bits
= 100800 bits
"Hence, data rate = 100800 bits / 1 ms =100.8 Mbps"
"If 4x4 MIMO is used, then the peak data rate would be 4 x 100.8 Mbps = 403 Mbps
."
"If 3/4 coding is used to protect the data, we still get 0.75 x 403 Mbps = 302 M
bps as data rate."
And Please Add Reputation
1 Radio Frame = 10 Sub-frame
1 Sub-frame = 2 Time-slots
1 Time-slot = 0.5 ms (i.e1 Sub-frame = 1 ms)
1 Time-slot = 7 Modulation Symbols (when normal CP length is used)
1 Modulation Symbols = 6 bits; if 64 QAM is used as modulation scheme
Radio resource is managed in LTE as resource grid..
1 Resource Block (RB) = 12 Sub-carriers
"Assume 20 MHz channel bandwidth (100 RBs), normal CP"
"Therefore,"
number of bits in a sub-frame = 100RBs x 12 sub-carriers x 2 slots x 7 modulatio
n symbols x 6 bits
= 100800 bits
"Hence, data rate = 100800 bits / 1 ms =100.8 Mbps"
"If 4x4 MIMO is used, then the peak data rate would be 4 x 100.8 Mbps = 403 Mbps
."
"If 3/4 coding is used to protect the data, we still get 0.75 x 403 Mbps = 302 M
bps as data rate."
And Please Add Reputation