Performance Improvement for PAPR Reduction in LTE Downlink System with Elliptic Filtering

摘要

This paper is concerned with the performance improvement of PAPR reduction of orthogonal frequencydivision multiplexing (OFDM) signal using amplitude clipping & filtering based design. Note that OFDMis one of the well adept multi-carrier multiplexing transmission scheme which has been implemented inlong term evolution (LTE) downlink. Nonetheless peak to average power ratio (PAPR) is the more rattlingproblem with OFDM, consequently in this paper a reduction procedure of the PAPR by using amplitudeclipping and filtering is proposed. Here we used IIR bandpass elliptic filter after amplitude clipping toreduce the PAPR. The performance of the system in terms of bit error rate (BER) is also canvased as a newfilter based clipping method. Our results show that the proposed methodology of clipping method with theIIR elliptic band pass filter significantly reduces the PAPR value.