论文标题
二维FFT预编码过滤库计划
A Two-Dimensional FFT Precoded Filter Bank Scheme
论文作者
论文摘要
这项工作通过二维（2D）快速傅立叶变换（2D-FFT）提出了一个新的预编码过滤库（FB）系统。它的结构类似于正交的时间频率空间（OTFS）系统，其中OFDM发射器被更改为滤波器库多携带者（FBMC），从而获得了较低的带外发射。通过基于离散的傅立叶变换使用预编码，可以保证FBMC传输的复杂正交性，该变换也用于实现二维快速傅立叶变换。通过使用全局传输矩阵，我们为新系统提出了混合接收器。首先，执行频域均衡，然后对延迟多普勒域上的干扰取消。仿真结果表明，所提出的系统获得了类似于其他OTFS系统的错误性能，并且与其他预编码的FBMC系统相比，性能出色。
This work proposes a new precoded filter bank (FB) system via a two-dimensional (2D) fast Fourier transform (2D-FFT). Its structure is similar to Orthogonal Time Frequency Space (OTFS) systems, where the OFDM transmitter is changed to a filter bank multi-carrier (FBMC) one, thus obtaining a lower out-of-band emission. The complex orthogonality of the FBMC transmission is guaranteed by using precoding based on a discrete Fourier transform, which is also used to implement the two-dimensional fast Fourier transform. Through the use of a global transmission matrix, we propose a hybrid receiver for the new system. First, a frequency domain equalization is performed, followed by an interference cancellation on the delay-Doppler domain. The simulation results show that the proposed system obtains an error performance similar to other OTFS systems, and superior performance as compared to other precoded FBMC systems.
