Use of a Peak-to-Average Power Reduction Technique in HIPERLAN2 and its Performance in a Fading Channel
نویسندگان
چکیده
A technique that uses clipping has been recently proposed to reduce the peak-toaverage-power ratio (PAPR) in orthogonal frequency divisional multiplexing (OFDM) signals. The technique uses a discrete Fourier transform (DFT) based filter to reduce out-ofband (OOB) power after the interpolated baseband OFDM signal is clipped. In this paper, the technique is applied to HIPERLAN2 to reduce the PAPR of the transmitted signals. Like many other OFDM systems, HIPERLAN2 has a number of unused subcarriers. The DFT based filter is used to null the unused subcarriers at the band edge. The effect of in-band distortion on the system’s bit error rate (BER) is studied. Results show that effect of clipping noise on the system’s BER is minimal in the fading environment.
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