在新工科背景下,如何有效完成芯片课程教学是值得深入探究的。针对传统的DSP实验教学存在的问题,文章设计了 一个实验教学案例。以提高学生兴趣为核心,让学生主动式和探究式开展实验为目标,进行了实验内容、实验过程 实施、考核评价等方面的设计。该教学设计可为相关的实验教学提供参考。
We proposed a novel flip-optical orthogonal frequency division multiplexing (OFDM) scheme based on fast Hartley transform (FHT), namely Flip-FHT. FHT, as a real trigonometric transform, was used to process the Fourier transform. Therefore, Hermitian symmetry was not required for the input signal. At the same time, unlike the traditional fast Fourier transform (FFT)-based asymmetric clipped optical OFDM (ACO-OFDM), in which only odd subcarriers carried information symbols, the proposed scheme flipped the negative part of the real bipolar signal so that even subcarriers could also carry information symbols. Therefore, this scheme is suitable for intensity modulation/direct detection (IM/DD) optical wireless communication (OWC) systems. The spectral efficiency of the Flip-FHT system is 2 times that of the ACO-OFDM system, and the computational complexity at the receiver is 50 that of the ACO-OFDM system. Simulation results show that compared with the ACO-OFDM system under 4-quadrature amplitude modulation (4QAM) and 16QAM, the Flip-FHT system featuring binary phase-shift keying (BPSK) and 4-pulse amplitude modulation (4PAM) achieves the same performance with a simpler system and a smaller constellation size.
为了积极实践全员育人、全程育人和全方位育人的要求,在电磁场与电磁波课程中引入思政教育。本文从电磁场与电磁波课程 内容中挖掘思政元素,建立思政内容资料库,根据授课内容、专业理论出现的历史背景和当前发展状况等,设置合适的思政教育目标,以某 个知识点或理论作为思政教育的切入点融入思政元素。课堂上,依据授课内容灵活加入思政教育内容,激发学生的情感体验。在课程考核中 增加思政内容,考核学生在专业知识学习的同时是否培养出正确的三观和职业道德。