| QAM调制分析与其SystemView仿真实现 |
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| 引用本文： | 陈国平.QAM调制分析与其SystemView仿真实现[J].信息通信,2006,19(6):28-30. |
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| 作者姓名： | 陈国平 |
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| 作者单位： | 南京信息职业技术学院,南京,210046 |
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| 摘 要： | 正交振幅调制OAM(Ouadrature Amplitude Modulation)是一种频谱利用率很高的调制方式.文章在介绍OAM调制、解调原理的基础上,深入探讨了OAM的频谱利用率和误码率性能.并在SystemView下对该系统进行了完整仿真.通过仿真观察到调制与解调信号的波形,星座图以及OAM信号功率谱密度曲线,并对仿真结果进行了分析.由分析结果可知,OAM调制系统具有很高的频谱利用率以及较好的误码率性能,因此可增大系统容量,同时也保证了系统的可靠性.
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| 关 键 词： | 误码率 仿真 星座图 功率谱密度 高频滚降 |
| 文章编号： | 1673-1131（2006）06-0028-03 |
Analysis of OAM and Its Simulation Based on SystemView |
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| CHEN Guo-ping.Analysis of OAM and Its Simulation Based on SystemView[J].Information & Communications,2006,19(6):28-30. |
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| Authors: | CHEN Guo-ping |
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| Institution: | Nanjing College of Information Technology,Nanjing 210046 |
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| Abstract: | OAM(Quadrature Amplitude Modulation)is a kind of modulation modes with high utilization ratio of frequency spectrum. Utilization ratio of frequency spectrum and bit error rate(BER)performance is discussed based on principle of QAM modulation and demodulation.The whole QAM system is simulated by System View.The modulating wave.Constellation Diagram and power spectrum density curve is observed by simulation.The simulation result shows that QAM can enlarge the system capacity and ensure the system reliability with high utilization ratio of frequency spectrum and low bit error rate. |
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| Keywords: | Bit error rate Simulation Constellation Diagram Power spectral density High frequency rolloff |
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