[1]张士凯,吴乐南.基于几何特征的调制波形优化方法[J].东南大学学报(自然科学版),2009,39(4):673-677.[doi:10.3969/j.issn.1001-0505.2009.04.005]
　Zhang Shikai,Wu Lenan.Modulation optimization schemes based on geometry characteristics[J].Journal of Southeast University (Natural Science Edition),2009,39(4):673-677.[doi:10.3969/j.issn.1001-0505.2009.04.005]
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基于几何特征的调制波形优化方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第4期
页码:
673-677
栏目:
信息与通信工程
出版日期:
2009-07-20

文章信息/Info

Title:
Modulation optimization schemes based on geometry characteristics
作者:
张士凯;  吴乐南
东南大学信息科学与工程学院,南京 210096
Author(s):
Zhang Shikai;  Wu Lenan
School of Information Science and Engineering, Southeast University, Nanjing 210096, China
关键词:
几何特征;  波形优化;  扩展的二元相移键控(EBPSK)
Keywords:
geometry characteristics;  waveform optimization;  extended binary phase shift keying(EBPSK)
分类号:
TN911.3
DOI:
10.3969/j.issn.1001-0505.2009.04.005
摘要:
为提高频带效率,探索更有利于频谱紧缩的调制波形,根据二元相移键控调制波形的几何特征,通过数学分析与推导,提出了基于几何特征的卡圆和正弦插入波形优化方法. 把提出的优化方法应用于EBPSK调制,使其调制波形的相位突变趋于平滑,功率谱边带大大衰减,频谱得到紧缩,获得了较好的频谱特性.仿真表明,优化后的EBPSK调制与优化前的EBPSK调制具有几乎相同的误码率,验证了该优化方法的可行性.把提出的优化方法进一步与控制周期线谱成分的优化方法结合,得到了传输带宽更窄、边带抑制更好的EBPSK调制波形.该方法可以完全数字化实现,因而,可以简化发送设备,甚至省去发送成型滤波器.
Abstract:
To improve bandwidth efficiency and explore more proper modulation waveform which is good for spectrum compact, circle wedging and sine inserting waveform optimization methods are proposed based on the geometry characteristics of binary phase shift keying with mathematical analysis and deduction. Abrupt phase change in extended binary phase shift keying(EBPSK)is smoothed and the power spectrum density(PSD)sideband of which are greatly attenuated by applying the two methods, and PSD for EBPSK are compact, so good spectral characteristics are achieved. Simulation shows that both optimized EBPSK modulation and un-optimized modulation have almost the same bit error rate, which verifies the effectiveness of the optimization methods proposed above. Furthermore, by combining the two methods with the line spectral controlling method, a modulated EBPSK waveform with narrower bandwidth and better sideband suppression is achieved. Besides, the optimization methods can be realized digitally, so the wave forming filter can be simplified, or even omitted.

参考文献/References:

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相似文献/References:

[1]张士凯,吴乐南.EBPSK调制的波形优化[J].东南大学学报(自然科学版),2008,38(4):564.[doi:10.3969/j.issn.1001-0505.2008.04.004]
　Zhang Shikai,Wu Lenan.Optimization of extended BPSK modulated waveforms[J].Journal of Southeast University (Natural Science Edition),2008,38(4):564.[doi:10.3969/j.issn.1001-0505.2008.04.004]

备注/Memo

备注/Memo:
作者简介: 张士凯(1975—),男,博士生,讲师; 吴乐南(联系人),男,博士,教授,博士生导师, wuln@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(60472054,60872075)、江苏省自然科学基金资助项目(BK2007103).
引文格式: 张士凯,吴乐南.基于几何特征的调制波形优化方法[J].东南大学学报:自然科学版,2009,39(4):673-677.[doi:10.3969/j.issn.1001-0505.2009.04.005]
更新日期/Last Update: 2009-07-20