论文标题
双方延迟多普勒在双重选择性褪色通道中的延迟逆转
Delay-Doppler Reversal for OTFS System in Doubly-selective Fading Channels
论文作者
论文摘要
最近提出的正交时间频率空间（OTFS）调制显示出明显的优势，而对于高移动性无线通信而言，传统的正交频施加（OFDM）（OFDM）。但是，一个具有挑战性的问题是开发具有低复杂性的实用OTFS系统的效率接收器。在本文中，我们为OTFS系统提出了一种具有期望性能和低复杂性的OTFS系统的新型延迟多普勒逆转（DDR）技术。我们从二维级联通道模型的角度介绍了DDR技术，分析其计算复杂性，并分析与没有DDR的直接处理（DP）接收器相比其性能增长。仿真结果表明，我们提出的DDR接收器在双重选择的褪色通道中优于传统接收器。
The recent proposed orthogonal time frequency space (OTFS) modulation shows signifcant advantages than conventional orthogonal frequency division multiplexing (OFDM) for high mobility wireless communications. However, a challenging problem is the development of effcient receivers for practical OTFS systems with low complexity. In this paper, we propose a novel delay-Doppler reversal (DDR) technology for OTFS system with desired performance and low complexity. We present the DDR technology from a perspective of two-dimensional cascaded channel model, analyze its computational complexity and also analyze its performance gain compared to the direct processing (DP) receiver without DDR. Simulation results demonstrate that our proposed DDR receiver outperforms traditional receivers in doubly-selective fading channels.
