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本文介绍我院研制成功的具有ADFE(自适应判决反馈均衡器)的PCM二次群4GHz微波信道机系统。该系统利用我国邮电部4GHZ 960路微波信道机的一个射频通道,附加一个包括调制解调器和ADFE的数字调制解调机架,即可传送PCM120路数字信息。本文附有该系统在南京—扬州及宜兴—苏州—上海的测试结果。
This article describes the successful development of our hospital with ADFE (adaptive decision feedback equalizer) PCM quad-band 4GHz microwave channel machine system. The system uses a radio frequency channel of the 4GHZ 960 microwave channel machine of China’s Ministry of Posts and Telecommunications, and adds a digital modulation and demodulation rack including a modem and an ADFE to transmit PCM120 digital information. This article is accompanied by the test results of the system in Nanjing - Yangzhou and Yixing - Suzhou - Shanghai.