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用于滤波器组多载波（FBMC）系统的基于限幅的迭代峰均功率比（PAPR）降低技术评估

Evaluation of clipping based iterative PAPR reduction techniques for FBMC systems.

作者信息

Kollár Zsolt, Varga Lajos, Horváth Bálint, Bakki Péter, Bitó János

机构信息

Inter-University Centre for Telecommunications and Informatics (ETIK), Kassai straße 26, Debrecen H-4028, Hungary ; Department of Broadband Infocommunications and Electromagnetic Theory, Budapest University of Technology and Economics (BME), Egry József utca 18, Budapest H-1111, Hungary.

Department of Broadband Infocommunications and Electromagnetic Theory, Budapest University of Technology and Economics (BME), Egry József utca 18, Budapest H-1111, Hungary.

出版信息

ScientificWorldJournal. 2014 Jan 16;2014:841680. doi: 10.1155/2014/841680. eCollection 2014.

DOI:10.1155/2014/841680
PMID:24558338
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3914596/
Abstract

This paper investigates filter bankmulticarrier (FBMC), a multicarrier modulation technique exhibiting an extremely low adjacent channel leakage ratio (ACLR) compared to conventional orthogonal frequency division multiplexing (OFDM) technique. The low ACLR of the transmitted FBMC signal makes it especially favorable in cognitive radio applications, where strict requirements are posed on out-of-band radiation. Large dynamic range resulting in high peak-to-average power ratio (PAPR) is characteristic of all sorts of multicarrier signals. The advantageous spectral properties of the high-PAPR FBMC signal are significantly degraded if nonlinearities are present in the transceiver chain. Spectral regrowth may appear, causing harmful interference in the neighboring frequency bands. This paper presents novel clipping based PAPR reduction techniques, evaluated and compared by simulations and measurements, with an emphasis on spectral aspects. The paper gives an overall comparison of PAPR reduction techniques, focusing on the reduction of the dynamic range of FBMC signals without increasing out-of-band radiation. An overview is presented on transmitter oriented techniques employing baseband clipping, which can maintain the system performance with a desired bit error rate (BER).

摘要

本文研究滤波器组多载波（FBMC）技术，这是一种多载波调制技术，与传统的正交频分复用（OFDM）技术相比，其邻道泄漏比（ACLR）极低。发射的FBMC信号的低ACLR使其在认知无线电应用中特别有利，因为认知无线电应用对带外辐射有严格要求。大动态范围导致高峰均功率比（PAPR）是各类多载波信号的特点。如果收发信机链中存在非线性，则高PAPR的FBMC信号的有利频谱特性会显著退化。可能会出现频谱再生，在相邻频带中造成有害干扰。本文提出了基于限幅的新型PAPR降低技术，并通过仿真和测量进行评估和比较，重点关注频谱方面。本文对PAPR降低技术进行了全面比较，重点是在不增加带外辐射的情况下降低FBMC信号的动态范围。概述了采用基带限幅的面向发射机的技术，这些技术可以在所需误码率（BER）下保持系统性能。

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