Performance Analysis of Digital Radio Links with Nonlinear Transmit Amplifier and Data Pfedistorter with Memory
نویسندگان
چکیده
R . zm Dip. Elettronica e Informatica Universita’ di Padova, Padova, Italy ABSTRACT. A new adaptive data predistortion technique to combat nonlinearity effects in digital radio links is presented. The method is attractive for its simplicity (two digital FIR filters) and because of the inherent adaptability to any nonlinearity. The performance gain is measured in about 3dB for the 64QAM system with respect to a system without predistortion, and of 1dB with respect to memoriless data predistortion. The corresponding values for the 256QAM system are of 4dB and of 1.5dB, respectively.
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