New Multi-Carrier Candidate Waveform For the 5G Physical Layer of Wireless Mobile Networks

Mohammad R. Kadhum
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引用次数: 5

Abstract

In this paper, a new multi-carrier candidate waveform for the future generation of mobile (5G) is introduced, explored and evaluated. The newly developed design of the Orthogonal Generalized Frequency division multiplexing (OGFDM) can improve the performance in terms of the channel capacity and Bit Error Rate (BER) for the wireless transmission of the multi-carrier system. In addition, compared to the most candidate waveform, Generalized Frequency Division Multiplexing (GFDM), the innovative multi-carrier OGFDM can double, boost and even maximize the capacity of wireless channel at the acceptable level of the BER. This is essentially achieved due to major adaptations have been made on the Filtration level, Oversampling level and Modulation level of the currently recommended GFDM. Thus, depending on the Digital Hilbert Filter (DHF), the presented solution can attain the orthogonality between the un-orthogonal filtered subcarriers of the multi-carrier GFDM technique. Moreover, by utilizing an adjustable oversampling factor, the examined system can stay reliable even in the worst conditions of the wireless channel. Furthermore, employing the adaptive bit loading instead of the fixed modulation format, the announced waveform can reach the maximum rate of transmission with the venial limit of error. The main parameters of each promoted level are precisely specified in accordance with the optimum system performance. Besides, the different levels of the multi-carrier OGFDM are presented in the physical layer (PHY) of a wireless electrical back-to-back transceiver system. A MATLAB simulation was introduced to evaluate the system performance (BER & channel capacity) in presence of the Additive White Gaussian Noise (AWGN).
无线移动网络5G物理层新的多载波候选波形
本文介绍、探索和评估了下一代移动通信(5G)的一种新的多载波候选波形。新提出的正交广义频分复用(OGFDM)设计可以在信道容量和误码率方面改善多载波系统的无线传输性能。此外,与大多数候选波形——广义频分复用(GFDM)相比,创新的多载波OGFDM可以在可接受的误码率水平下使无线信道的容量翻倍、增强甚至最大化。这基本上是由于目前推荐的GFDM的滤波电平、过采样电平和调制电平进行了重大调整而实现的。基于数字希尔伯特滤波器(DHF),该方法可以实现多载波GFDM技术非正交滤波子载波之间的正交性。此外,通过利用可调的过采样因子,即使在最恶劣的无线信道条件下,测试系统也能保持可靠。此外,采用自适应比特加载代替固定调制格式,可以在最小误差限制下达到最大传输速率。每个提升级别的主要参数都是根据最佳系统性能精确指定的。此外,在无线电背靠背收发系统的物理层(PHY)中给出了多载波OGFDM的不同层次。采用MATLAB仿真方法对加性高斯白噪声(AWGN)下的系统性能(误码率和信道容量)进行了评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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