Impact of timing and frequency offsets on multicarrier waveform candidates for 5G
Impact of timing and frequency offsets on multicarrier waveform candidates for 5G
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DOI：
10.1109/dsp-spe.2015.7369549
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发表时间：
2015-05
期刊：
影响因子：
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通讯作者：
A. Aminjavaheri;Arman Farhang;Ahmad Rezazadehreyhani;B. Farhang-Boroujeny
中科院分区：
文献类型：
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作者：
A. Aminjavaheri;Arman Farhang;Ahmad Rezazadehreyhani;B. Farhang-Boroujeny
本文介绍了受定时和载波频率偏移影响的5G候选波形的研究。这些波形是：正交频分复用（OFDM）、广义频分复用（GFDM）、通用滤波多载波（UFMC）、圆形滤波器组多载波（C-FBMC）和线性滤波器组多载波（FBMC）。当多个用户以异步或准同步方式向基站发送信号时，我们对多址干扰（MAI）特别感兴趣。我们在这些波形中确定了MAI的来源，并提出了一些数值分析来证实我们的发现。本研究的目的是回答以下问题：“5G候选波形中哪一种具有更宽松的同步要求？”
This paper presents a study of the candidate waveforms for 5G when they are subject to timing and carrier frequency offset. These waveforms are: orthogonal frequency division multiplexing (OFDM), generalized frequency division multiplexing (GFDM), universal filtered multicarrier (UFMC), circular filter bank multicarrier (C-FBMC), and linear filter bank multicarrier (FBMC). We are particularly interested in multiple access interference (MAI) when a number of users transmit their signals to a base station in an asynchronous or a quasi-synchronous manner. We identify the source of MAI in these waveforms and present some numerical analysis that confirm our findings. The goal of this study is to answer the following question, “Which one of the 5G candidate waveforms has more relaxed synchronization requirements?”.