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Digital PreDistortion imPlementation
pre-amplifiergainof0.20. ere is no value in the C++ column because
there is no reduction in the adjacent channel power ratio(ACPR) for a
pre-amp gain of 0.20 in the C++ system. is indicates that the C++
system has reached its limit. Table7.6 shows the performance differ-
ence for a two-carrier CDMA signal of a pre-amplifier gain of 0.40.
e C++ column remains valueless, as it has reached its limit in the
previous 0.2 pre-amp gain. e MATLAB simulation for five iterations
shows no value because the number of iterations is insufficient to achieve
significant reduction. e table for a pre-amp gain of 0.8 is ...