| 短波选频和选址呼叫技术的研究与实践 |
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| 引用本文： | 唐拴礼,姚居济.短波选频和选址呼叫技术的研究与实践[J].国际商务研究,1990(5). |
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| 作者姓名： | 唐拴礼 姚居济 |
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| 作者单位： | 机电部第十研究所 研究生(唐拴礼),机电部第十研究所 研究员(姚居济) |
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| 摘 要： | 本文从短波模拟话音通信的实际情况出发,讨论了短波无中心组网中,实时选频和数字选址技术.提出了以绝对值信噪比(ASNR)代替常用信噪比进行信道评判的实时选频方案,和以双门限连续判决器及简易纠错码-(7,4)循环码的软件编译码,作为数字选址呼叫信可靠传输、识别手段的数字选址呼叫方案,并通过了实验验证.
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| 关 键 词： | 短波通信 实时选频 数字选址呼叫 |
Research and practics in short wave frequency selecting and address selecting call |
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| Graduate Student Tang Shuanli Research Fellow Yao Juji.Research and practics in short wave frequency selecting and address selecting call[J].International Business Research,1990(5). |
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| Authors: | Graduate Student Tang Shuanli Research Fellow Yao Juji |
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| Institution: | The Tenth Institute of Ministry of Machine zuilding and Electronics Industry |
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| Abstract: | This paper discussed the techniques of real-time frequecy selecting and digital address selecting calling in short-wave no-centre trunking system. Based on the situation of analog communication, we used ASNR(Absolute Signal to Noice Ratio) to replace SNR(Signal to Noice Ratio) to estimate the quality of communcation, designed "two thresholds continuous comparator" in Company with using simple (7, 4) cyclic codes to make the data transmission more reliable. The system has been proved sucessfully by the experiments. |
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| Keywords: | Short Wave Communication Real-time Frequeney Selecting Digital Address Selecting Call |
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