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LTE Multi Evaluation Measurement
R&S
®
CMW-KM5xx/-KS5xx
507
User Manual 1173.9628.02 ─ 16
Example:
For a channel bandwidth of 3 MHz the following values are allowed in the uplink: 1, 2,
3, 4, 5, 6, 8, 9, 10, 12, 15. Not allowed are 7, 11, 13 and 14.
In the time domain the additional units radio frame, subframe and slot (containing the
SC-FDMA symbols) are defined, see figures below. Each SC-FDMA symbol contains a
guard time called Cyclic Prefix (CP). Depending on the duration of the guard time, it is
either called normal CP or extended CP and a slot contains either 7 SC-FDMA sym-
bols with normal CP or 6 SC-FDMA symbols with extended CP.
The basic time unit in LTE is the sample interval T
s
. T
s
can be calculated from the sam-
pling frequency 30.72 MHz: 1 T
s
= 1/30.72 MHz
≈
32.55 ns.
Fig. 3-6: LTE UL frame structure for FDD, normal CP
Fig. 3-7: LTE UL slot structure for FDD, extended CP
The figures above are for FDD, but the shown structure of SC-FDMA symbols and UL
slots applies also to TDD.
General Description
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