系统消息设计是无线通信系统中的重要概念之一，小区级系统消息主要为了配置小区驻留、提供用户接入、互操作等一系列重要参数配置。5G NR对于系统消息进行了一定程度的简化，相比4G不仅在同步信号以及系统消息设计方面都进行了完全不同的设计 ...

我第一次接触单边带（Single Sideband；SSB）信号要从 1960 年代初的业余无线电（Ham Radio）说起。cucednc 当时，大多数业余无线电语音通信都是通过调幅或调幅信号进行的。当你用调幅信号收听广播时，语音质量通常相当不错。我记得，EF Johnson Viking Ranger 发射机被 ...

The theoretical and practical requirements for introducing synchronous demodulation into domestic receivers for MF/LF broadcasting are discussed. The difficulties encountered in the construction and ...

Linear Technology has introduced a new high linearity I/Q demodulator, the LTC5586, with more than 1GHz, –1dB flatness bandwidth, supporting next-generation 5G wireless infrastructure equipment such ...

The TBA120 Series ICs provide a high-gain limiting IF amplifier and a quadrature coincidence detector in one package. These ICs are primarily intended for extraction of TV intercarrier sound, which ...