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Applications of SAW technology in a SONET-compatible high capacity digital microwave radio

机译:SAW技术在与SONET兼容的大容量数字微波无线电中的应用

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Surface acoustic wave (SAW) technology is used in the development of the world's first SONET-compatible digital microwave radio system. The SONET Radio 440 utilizes a 512 quadrature AM (QAM) modulation scheme to transport an OC-12 (622 Mbit) data stream over two 40 MHz channels, achieving twice the efficiency of current long-haul digital microwave radio systems. The success of this radio is due largely to the application of SAW technology in the signal processing hardware. Pulse shaping filters have been developed to provide stringent out-of-band rejection while maintaining the channel fidelity necessary for the high modulation scheme. Antenna delay differences are equalized from a terminal, thus simplifying the setup of a system in the field.
机译:表面声波(SAW)技术用于开发世界上第一个与SONET兼容的数字微波无线电系统。 SONET无线电440利用512正交AM(QAM)调制方案在两个40 MHz信道上传输OC-12(622 Mbit)数据流,实现了目前远程数字微波无线电系统两倍的效率。该无线电的成功很大程度上归功于SAW技术在信号处理硬件中的应用。已经开发了脉冲整形滤波器,以提供严格的带外抑制,同时保持高调制方案所需的通道保真度。从终端均衡天线延迟差,从而简化了现场系统的设置。

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