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Effects of HPA nonlinearity on frequency multiplexed OFDM signals

2001; Institute of Electrical and Electronics Engineers; Volume: 47; Issue: 2 Linguagem: Inglês

10.1109/11.948265

1557-9611

Paolo Banelli, Giuseppe Baruffa, S. Cacopardi,

PAPR reduction in OFDM

The paper analyzes the performance of the downlink channel of a multimedia interactive service system which transmits the desired information by the frequency multiplexing of several OFDM signals compliant with the DVB-T standard. The effects of the nonlinear distortions introduced by a high power amplifier on the system performance are evaluated both in terms of the bit error rate (BER) degradation in AWGN channels and of the spectral regrowth. The performance comparison to the case of a single DVB-T signal as well as the benefits of an ideal predistortion is also considered by comparing analytical results to computer simulations.