Design and implementation of alow complexity NCO based CFO compensation unit

机译：低复杂度基于NCO的CFO补偿单元的设计与实现

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The use of Orthogonal Frequency Division Multiplex (OFDM) modulation has become increasingly important for actual and future mobile communication systems [1]. Within this scope, Carrier Frequency Offset (CFO) compensation is indispensable [2]. Its underlying algorithm requires the calculation of trigonometric functions, which is difficult to achieve by hardware implementation in general. In this paper we propose a CFO compensation approach based on low complexity and hardware optimized linear function approximation. The Multiplier-less nonuniform Piecewise function Approximation (MPA) methodology significantly reduces the calculation effort of crucial algebraic terms. Matlab simulation is performed in order to prove the results in terms of feasibility. The compensation algorithm is also implemented in VHDL and synthesized as hard-wired Integrated Circuit (IC). A chip area of 0.034mm², a frequency of 181MHz and a total power consumption of 18.62μλΥ/ΜΗζ are obtained.

机译：正交频分复用（OFDM）调制的使用对于实际和未来的移动通信系统变得越来越重要[1]。在此范围内，载波频率偏移（CFO）补偿是必不可少的[2]。它的基础算法需要三角函数的计算，这通常很难通过硬件实现来实现。在本文中，我们提出了一种基于低复杂度和硬件优化线性函数逼近的CFO补偿方法。无需乘数的非均匀分段函数逼近（MPA）方法大大减少了关键代数项的计算工作。进行Matlab仿真是为了证明结果的可行性。补偿算法也用VHDL实现，并合成为硬连线集成电路（IC）。获得的芯片面积为0.034mm ^{2 ，频率为181MHz，总功耗为18.62μλΥ/ΜΗζ。}

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《Proceedings of the 20th European Signal Processing Conference.》||p.116- 120|共5页
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Rust Jochen; Wiegand Till; Paul Steffen;
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中图分类信号处理;信号处理;
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1. Low complexity interference compensation for DFRFT-based OFDM system with CFO [J] . Trivedi Vinay Kumar, Kumar Preetam Communications, IET . 2020,第14期

机译：CFO基于DFRFT的OFDM系统的低复杂性干扰补偿
2. A Low-Complexity Transceiver Structure With Multiple CFOs Compensation for OFDM-Based Coordinated Multi-Point Systems [J] . Yang Yi-Syun, Huang Wei-Chieh, Li Chih-Peng, Communications, IEEE Transactions on . 2015,第7期

机译：基于OFDM的多点协作系统具有多CFO补偿的低复杂度收发器结构
3. FPGA Implementation of SDR Based CFO Estimation and Compensation Circuit for OFDM System [J] . Jeich Mar, Chi-Cheng Kuo, Shih-Hao Chou Journal of signal processing systems for signal, image, and video technology . 2012,第2期

机译：基于SDR的OFDM系统CFO估计和补偿电路的FPGA实现。
4. Design and implementation of alow complexity NCO based CFO compensation unit [C] . Rust Jochen, Wiegand Till, Paul Steffen European Signal Processing Conference . 2012

机译：基于NCO的CFO补偿单元的设计与实现
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Design and implementation of alow complexity NCO based CFO compensation unit

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