WCDMA
Maximum Output Power
• The maximum output power is a measure
of the maximum power the UE can
transmit in a bandwidth of at least (1+ a)
times the chip rate of the radio access
mode. The period of measurement shall
be at least one timeslot.
Frequency Error
• The frequency error is the difference
between the RF modulated carrier
frequency transmitted from the UE and the
assigned frequency.
Open Loop Power Control in the Uplink
• Open loop power control in the uplink is the
ability of the UE transmitter to set its output
power to a specific value.
• This function is used for PRACH transmission
and based on the information from Node B using
BCCH and the downlink received signal power
level of the CPICH.
• The information from Node B includes
transmission power of CPICH and uplink
interference power level.
Inner Loop Power Control in the
Uplink
• Inner loop power control in the uplink is
the ability of the UE transmitter to adjust
its output power in accordance with one or
more TPC commands received in the
downlink.
Minimum Output Power
• The minimum controlled output power of
the UE is when the power control setting is
set to a minimum value. This is when both
the inner loop and open loop power control
indicate a minimum transmit output power
is required.
Transmit OFF Power
• Transmit OFF power is defined as the
RRC filtered mean power when the
transmitter is off.
Transmit ON/OFF Time mask
• The time mask for transmit ON/OFF
defines the ramping time allowed for the
UE between transmit OFF power and
transmit ON power.
Occupied Bandwidth (OBW)
• Occupied bandwidth is a measure of the
bandwidth containing 99 % of the total
integrated power of the transmitted
spectrum, centred on the assigned
channel frequency.
Spectrum emission mask
• The spectrum emission mask of the UE
applies to frequencies, which are between
2,5 MHz and 12,5 MHz away from the UE
centre carrier frequency.
Adjacent Channel Leakage Power
Ratio (ACLR)
• ACLR is the ratio of the RRC filtered mean
power centred on the assigned channel
frequency to the RRC filtered mean power
centred on an adjacent channel frequency.
Error Vector Magnitude (EVM)
• The Error Vector Magnitude is a measure
of the difference between the reference
waveform and the measured waveform.
Peak code domain error
• The Peak Code Domain Error is computed by
projecting power of the error vector onto the
code domain at a specific spreading factor.
• The Code Domain Error for every code in the
domain is defined as the ratio of the mean
power of the projection onto that code, to the
mean power of the composite reference
waveform expressed in dB.
• The Peak Code Domain Error is defined as the
maximum value for the Code Domain Error for
all codes.
Rx Sensitivity
• The reference sensitivity level is the
minimum mean power received at the UE
antenna port at which the Bit Error Ratio
(BER) shall not exceed a specific value
Thanks