| 应用于水声MC-CDMA系统的一种自适应调制算法 |
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| 引用本文： | 方荟,胡晓毅. 应用于水声MC-CDMA系统的一种自适应调制算法[J]. 闽江学院学报, 2012, 33(2): 73-76 |
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| 作者姓名： | 方荟 胡晓毅 |
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| 作者单位： | 1. 闽江学院计算机科学系,福建福州,350108
2. 厦门大学信息科学与技术学院,福建厦门,361005 |
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| 摘 要： | 自适应调制技术能有效地利用系统有限的功率和频谱资源，改善系统的误码率性能．针对资源受限的水声MC-CDMA系统提出一种自适应的调制算法．采用该方案的自适应水声MC-CDMA系统在获得有效频谱效率和分集增益的同时，还能获得很好的误码率性能．分析了提出的自适应调制算法的性能，并通过MATLAB系统仿真，表明自适应调制算法较非自适应调制可以使系统性能有明显的提高，说明了自适应调制技术在水声MC-CDMA中的有效性．
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| 关 键 词： | MC-CDMA 水声通信 自适应调制 |
An adaptive modulation algorithm applied to MC-CDMA underwater acoustic communication system |
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| FANG Hui,HU Xiao-yi. An adaptive modulation algorithm applied to MC-CDMA underwater acoustic communication system[J]. Journal of Minjiang University, 2012, 33(2): 73-76 |
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| Authors: | FANG Hui HU Xiao-yi |
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| Affiliation: | 1.Department of Computer Science,MinJiang University,Fuzhou,Fujian 350108,China; 2.Department of Communication Engineering,Xiamen University,Xiamen,Fujian 361005,China) |
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| Abstract: | Adaptive modulation techndogy can improve the system performance with finite power and high spectral efficiency.In this paper,a combining scheme of UWAC MC-CDMA and adaptive modulation is proposed in order to achieve the spectral efficiency and the frequency diversity without loss of much BER performance.The performance of the adaptive modulation algorithm is analyzed.MATLAB simulation results also indicate that the adaptive modulation algorithm can obviously improve the system performance compared with non-adaptive one.The affectivity of adaptive modulation has been verified in UWA MC-CDMA. |
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| Keywords: | MC-CDMA UWAC adaptive modulation |
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