2400b/s短波串行数传MODEM

A 2400b/s serial data--transmission MODEM for HF channels

此文介绍了一种2400b/s短波串行数传MODEM。该系统采用了预判决反馈和简化维特比算法的准最大似然序列检测技术、交错里德——索罗蒙码的前向纠错技术及高速数字信号处理技术等。线路试验结果表明,该MODEM系统在抗加性噪声干扰和多径衰落方面都达到了良好的性能。

A 2400b/s serial data-transmission MODEM for HF channels is presented, which employs the near-maximum-likelihood sequence estimation technique with pre-decision feedback and simplified Viterbi algorithm, the forward error correction technique for interleaving Reed-Solomon codes, and the high-speed digital signal processing technique. The channel test results show that this MODEM is satisfactory in countering both additive noise interference and multipath fading.