| 多径干扰下一种双M-ary正交信道扩频通信系统的仿真 |
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| 引用本文： | 李明江,张中兆.多径干扰下一种双M-ary正交信道扩频通信系统的仿真[J].南京航空航天大学学报,2009,41(6). |
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| 作者姓名： | 李明江 张中兆 |
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| 作者单位： | 哈尔滨工业大学通信技术研究所,哈尔滨,150001 |
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| 摘 要： | 为了考察双M-ary正交信道扩频通信方式的抗多径干扰的能力,本文研究了在IQ正交信道上采用双M-ary扩频通信的系统方案;分析了其在多径干扰下的性能,并给出了理论分析和详尽的Simulink仿真.结果表明:该系统在白噪声信道情况下具有良好的性能,其高频带利用丰此时得到了体现,但是其受多径干扰的影响较大.因此在实际的使用中,必须加入纠检错模块来提高其抗多径干扰的能力.
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| 关 键 词： | 多径干扰 M元双正交扩频 双M-ary系统 |
Simulation of Dual M-ary Orthogonal Channel Spread-Spectrum Communication System with Multipath Interference |
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| Li Mingjiang,Zhang Zhongzhao.Simulation of Dual M-ary Orthogonal Channel Spread-Spectrum Communication System with Multipath Interference[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(6). |
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| Authors: | Li Mingjiang Zhang Zhongzhao |
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| Abstract: | In order to verify the anti-multipath interference ability of the dual M-ary spread-spectrum communication system,a M-ary spread-spectrum communication system is researched.And then the system performance in the muhipath interference environment is analyzed.Theory analyses and simulink simulation results show that the system has high bandwidth efficiency and good performance on the AWGN channel,but it is influenced under the multi-path interference.Thus,detecting and correcting mechanisms have to be used to enhance the ability of anti-muhipath interference for this system. |
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| Keywords: | CPSK multipath interference M-ary biorthogonal spread-spectrum coherent phase shift keying dual M-ary system |
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