| 海上数字短波通信调制解调器建模与仿真 |
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| 引用本文： | 王鹏,安建平. 海上数字短波通信调制解调器建模与仿真[J]. 计算机仿真, 2007, 24(8): 116-119 |
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| 作者姓名： | 王鹏 安建平 |
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| 作者单位： | 北京理工大学电子工程系,北京,100081;北京理工大学电子工程系,北京,100081 |
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| 摘 要： | 提出了一种应用于岸船通信的高效数字短波调制解调器仿真模型.纠错编码采用了多级编码(MLC)方案,通过与正交频分复用(OFDM)相结合,使系统具有很高的频带利用率和传输效率.给出了典型信道条件下的MLC编码与解码方案,映射方式采用差分幅度相位调制(MDAPSK).仿真结果显示所提方案满足数字短波通信需求,与正交幅度调制(16QAM)相比,16DAPSK在相同误码率时所需信噪比增加了1～2 dB,但大幅降低了接收机复杂度,同时提高了数据传输效率.
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| 关 键 词： | 数字短波通信 多级编码 差分幅度相位调制 |
| 文章编号： | 1006-9348（2007）08-0116-04 |
| 修稿时间： | 2005-07-18 |
Modeling and Simulation of Maritime HF Digital Communication Modem |
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| WANG Peng,AN Jian-pin. Modeling and Simulation of Maritime HF Digital Communication Modem[J]. Computer Simulation, 2007, 24(8): 116-119 |
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| Authors: | WANG Peng AN Jian-pin |
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| Affiliation: | Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | This paper presents a simulation model of high-efficiency digital shortwave moderm for ship to shore communication.A solution combining Multi-level Coding(MLC) with Orthogonal Frequency Division Multiplexing(OFDM) is adopted to make the system have higher usage factor of frequency band.The mapping method is M-ary Differential Amplitude/Phase-shift Keying(MDAPSK),and comparing with M-ary Quadrature Amplitude Modulation(MQAM),it reduces the complexity of the receiver and improves the transmission efficiency of the data.The simulation results show that this solution can meet the demand of digidal shortwave communication,but comparing with MQAM method,the SNR of it should be increased by 1-2dB to achieve the same symbol error rate. |
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| Keywords: | HF digital communication Multilevel coding 16DAPSK |
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