This paper introduces linear constellation precoding (LCP) for OFDM transmissions over frequency-selective fading channels. Exploiting the correlation structure of OFDM subchannels, and choosing system parameters properly, we first perform op

接收平台下发的带副载波的调频信号，并进行解调、放大，最后驱动高音喇叭进行广播。支持接收三个频点FM-RDS，支持应急/日常广播，支持区域广播，支持定时广播，具有多种保护电路等。(The subcarrier frequency modulation signal under the receiving platform is demodulated and amplified, and the loudspeaker is finally driven to broadcast. It supp