LTE Multi Evaluation Measurement
R&S
®
CMW-KM5xx/-KS5xx
506
User Manual 1173.9628.02 ─ 16
3.2.4 LTE UL Signal Properties
This section describes the following selected topics related to LTE UL signal proper-
ties.
Resources in Time and Frequency Domain
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3.2.4.1
Resources in Time and Frequency Domain
The UL radio resources in an LTE system are divided into time-frequency units called
resource elements. In the time domain a resource element corresponds to one SC-
FDMA symbol. In the frequency domain it corresponds to one subcarrier.
For the mapping of physical channels to resources, the resource elements are grouped
into resource blocks (RB). Each RB consists of 12 consecutive subcarriers (180 kHz)
and 6 or 7 consecutive SC-FDMA symbols (0.5 ms).
Fig. 3-5: Resource element grid (7 symbols per RB)
The total number of resource blocks available per channel depends on the channel
bandwidth as shown in the following table.
Channel Bandwidth [MHz]
1.4
3
5
10
15
20
Resource Blocks (RB)
6
15
25
50
75
100
The number of resource blocks is additionally restricted by 3GPP TS 36.211. Only
numbers that can be calculated by the following formula are allowed:
N
RB
= 2
i
x 3
j
x 5
k
, with i, j, k being non-negative integer values
General Description
深圳德标仪器
135-1095-0799
