The fifth generation new radio (5G-NR) system design is aimed to have ultra-large transmission rate, massive capacity, massive device connectivity, enhanced mobile broadband (eMBB) services, and ultra-reliable low communication latency (URLLC) services. To support the various challenges and specifications, new wireless communication technologies including new notorious waveforms, forward error correction codes (FEC), non-orthogonal waveforms as well as massive multiple input multiple output (MIMO) antenna schemes have been introduced to aid the progress of pliable 5G air interface system design. Cyclic prefix based orthogonal frequency division multiplexing (CP-OFDM) has been broadly selected in 4G-OFDM based long term evaluation(LTE), Wi-Fi, and other mobile communications due to the benefit of high spectral efficiency, ease of development and easy to integrate with MIMO systems, etc. However, the conventional CP-OFDM technology has some drawbacks, such as high out of band (OOB) emission leakage, an exact requirement of synchronization, and a limited number of CP lengths. Filtered OFDM (FOFDM) is a flexible foundational waveform by applying subband filtering on existing CP-OFDM which can support the needs of the waveform for 5G air interface. In this paper, a spectrally efficient waveform called polar coded filtered OFDM (PC-FOFDM) is proposed to fulfil these requirements for high data rate ultra-reliable low latency communications. This paper investigates bit error rate (BER) performance of PC-FOFDM scheme over additive white Gaussian noise (AWGN) channel and compares the results with PC-OFDM. The simulation results show that the PC-FOFDM scheme outperforms PC-OFDM in terms of spectrum efficiency, BER performance, and error vector magnitude (EVM).

第五代新无线电（5G-NR）系统设计旨在具有超大的传输速率，大容量，庞大的设备连接性，增强的移动宽带（eMBB）服务以及超可靠的低通信延迟（URLLC）服务。为了支持各种挑战和规范，已经引入了新的无线通信技术，包括新的臭名昭著的波形，前向纠错码（FEC），非正交波形以及大规模多输入多输出（MIMO）天线方案，以帮助推动无线通信技术的发展。柔韧的5G空中接口系统设计。由于具有高频谱效率，在基于4G-OFDM的长期评估（LTE），Wi-Fi和其他移动通信中已广泛选择了基于循环前缀的正交频分复用（CP-OFDM），易于开发并且易于与MIMO系统集成等。但是，常规CP-OFDM技术具有一些缺点，例如高带外（OOB）发射泄漏，对同步的精确要求以及有限的CP长度。通过在现有CP-OFDM上应用子带滤波，滤波OFDM（FOFDM）是一种灵活的基础波形，可以满足5G空口的波形需求。在本文中，提出了一种频谱有效波形，称为极性编码滤波OFDM（PC-FOFDM），可以满足高数据速率，超可靠，低延迟通信的这些要求。本文研究了PC-FOFDM方案在加性高斯白噪声（AWGN）信道上的误码率（BER）性能，并将结果与​​PC-OFDM进行了比较。