Performance Improvement for Papr Reduction in Lte Downlink System with Elliptic Filtering

TL;DR

This paper proposes a novel amplitude clipping and elliptic filtering method to effectively reduce PAPR in LTE OFDM downlink systems, improving signal quality without significantly increasing BER.

Contribution

It introduces the use of an IIR elliptic bandpass filter after clipping to enhance PAPR reduction in LTE OFDM signals, which is a new approach.

Findings

Significant PAPR reduction achieved with the proposed method

The BER performance remains acceptable after filtering

Elliptic filtering enhances the effectiveness of clipping in PAPR reduction

Abstract

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