To efficiently use frequency resources, the next 6th generation mobile communication technology must solve the problem of out-of-band emission (OoBE) of cyclic prefix (CP) orthogonal frequency division multiplexing (OFDM), which is not solved in 5th generation technology. This study describes a new zero insertion technique to replace an existing filtering scheme to solve this internal problem in OFDM signals. In the development of the proposed scheme, a precoder with a two-dimensional structure is first designed by generating a two-dimensional mapper and using the specialty of each matrix. A spectral shaping technique based on zero insertion instead of a long filter is proposed, so it can be applied not only to long OFDM symbols, but also very short ones. The proposed method shows that the transmitted signal is completely blocked at the bandwidth boundaries of signals according to the current standards, and it is confirmed that the proposed scheme is ideal with respect to bit error rate (BER) performance because its BER is the same as that of CP-OFDM. In addition, the proposed scheme can transformed into a real time structure through vectorizing process with minimal complexity.

中文翻译：

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频谱封装的 OFDM：具有最小复杂性的矢量化结构

为了有效利用频率资源，下一代移动通信技术必须解决循环前缀（CP）正交频分复用（OFDM）的带外发射（OoBE）问题，这是第五代技术没有解决​​的问题。这项研究描述了一种新的零插入技术来替代现有的滤波方案，以解决 OFDM 信号中的这一内部问题。在所提出的方案的开发中，首先通过生成二维映射器并利用每个矩阵的特殊性来设计具有二维结构的预编码器。提出了一种基于零插入代替长滤波器的频谱整形技术，因此它不仅可以应用于长OFDM符号，还可以应用于非常短的OFDM符号。所提出的方法表明，根据当前标准，传输信号在信号的带宽边界处被完全阻塞，并且证实了所提出的方案在误码率 (BER) 性能方面是理想的，因为其 BER 与CP-OFDM。此外，所提出的方案可以通过向量化过程以最小的复杂度转换为实时结构。