| 一种平滑化的HPSK调制技术 |
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| 引用本文： | 潘洋,单侠芹,殷奎喜,张倩茹.一种平滑化的HPSK调制技术[J].电子工程师,2010,36(11):20-22,33. |
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| 作者姓名： | 潘洋 单侠芹 殷奎喜 张倩茹 |
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| 作者单位： | 南京师范大学物理科学与技术学院; |
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| 基金项目： | 虚拟地理环境教育部重点实验室开放项目 |
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| 摘 要： | 文中主要研究并改进了一种广泛应用于WCDMA和CDMA2000反向链路中的调制技术——HPSK（混合移相键控）调制技术。这种调制技术能有效降低峰均比,提高功率放大器的效率。文中主要分析了HPSK调制技术的工作原理,并对HPSK调制过程中的相位跳变进行分析计算,从而分析其降低π跳变的原理。另外,该系统还采用了一种平滑函数法对复扰码的输出信号进行平滑滤波,使输出调制信号的相位跳变更加平缓,缩小了频带宽度。
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| 关 键 词： | Walsh码 HPSK 相位跳变 平滑化处理 |
A New Smoothed HPSK Modulating Technology |
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| PAN Yang,SHAN Xiaqin,YIN Kuixi,ZHANG Qianru.A New Smoothed HPSK Modulating Technology[J].Electronic Engineer,2010,36(11):20-22,33. |
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| Authors: | PAN Yang SHAN Xiaqin YIN Kuixi ZHANG Qianru |
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| Affiliation: | PAN Yang,SHAN Xiaqin,YIN Kuixi,ZHANG Qianru(School of Physical Science and Technology,Nanjing Normal University,Nanjing 210046,China) |
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| Abstract: | This article mainly researches and improves a modulating technology which has been widely used in WCDMA and CDMA2000 reverse link,named hybrid phase shift keying（HPSK）modulating technology.This modulating technology can decrease the peak-to-average ratio effectively,and increase the efficiency of the amplifier.This article mainly analyses the working principle of HPSK,calculates the phasic change in the process of HPSK modulating,and works out how it reduces the probability of π phasic change.In addition,this system also uses a kind of smoothing function to smooth the output,making the phasic change of output more smooth,and reducing the frequency bandwidth. |
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| Keywords: | Walsh code HPSK phasic change smoothing |
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