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Power Efficiency in Broadband Wireless Communications
book

Power Efficiency in Broadband Wireless Communications

by Pooria Varahram, Somayeh Mohammady, Borhanuddin Mohd Ali, Nasri Sulaiman
August 2014
Intermediate to advanced content levelIntermediate to advanced
340 pages
8h 49m
English
CRC Press
Content preview from Power Efficiency in Broadband Wireless Communications
215
Power amPlifier linearization
is hampered and the CGMP technique is trying to decrease the error
in the regions where the input power is near the saturation point, as
shown in Figure6.13, the CGMP is going to be nonconvergence.
It can also be seen that the value of the error vector is negative and
this is true because the AM-AM characteristicof thePA is bending,
0.8
0.70.60.50.4
Input Voltage (Scaled)
Voltage Error
0.3
0.1
0.20.10
–0.06
–0.04
–0.02
0.02
0.04
0.06
0.08
0
Figure 6.13 Error voltage of the power amplifier after five iterations.
0.8
0.70.60.50.4
Input Voltage (Scaled)
Voltage Gain
0.3
1
2
3
0
0.2
–2
–1
0.10
–3
Figure 6.12 Complex gain memory predistortion ...
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Publisher Resources

ISBN: 9781466595484