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[ "张志成,男,河西学院物理与机电工程学院讲师,主要研究方向为电子技术基础、单片机。" ]
[ "黄小娜,女,河西学院物理与机电工程学院讲师,主要研究方向为信号处理、复杂网络建模与优化。" ]
[ "熊丽,女,河西学院物理与机电工程学院讲师,主要研究方向为电路理论及应用、机械电子工程。" ]
网络出版日期:2015-11,
纸质出版日期:2015-11-20
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张志成, 黄小娜, 熊丽. 一种适合多载波码分多址系统的扩频序列[J]. 电信科学, 2015,31(11):60-66.
Zhicheng Zhang, Xiaona Huang, Li Xiong. A Spread Spectrum Sequence for MC-CDMA System[J]. Telecommunications science, 2015, 31(11): 60-66.
张志成, 黄小娜, 熊丽. 一种适合多载波码分多址系统的扩频序列[J]. 电信科学, 2015,31(11):60-66. DOI: 10.11959/j.issn.1000-0801.2015305.
Zhicheng Zhang, Xiaona Huang, Li Xiong. A Spread Spectrum Sequence for MC-CDMA System[J]. Telecommunications science, 2015, 31(11): 60-66. DOI: 10.11959/j.issn.1000-0801.2015305.
多载波码分多址(MC-CDMA)技术结合了正交频分复用(OFDM)技术和码分多址(CDMA)技术的优点,具有数据传输速率高、频谱利用率高、抗干扰能力强和系统容量大的优点,是现阶段备受瞩目的一种无线通信方式。由于该通信系统中的码分多址技术结合了多载波调制技术,所以要求该系统中使用的扩频序列在兼具良好的自相关、互相关特性的同时,还要有较低的峰均比,这对扩频序列的设计提出了较高的要求。为了满足上述要求,设计了一种以Golay码为基础码,以m序列对Golay码进行加扰的扩频序列,该扩频序列具有良好的自相关、互相关特性,且峰均比较低。通过对比仿真验证,证明了本文中设计的扩频序列具有良好的特性,适用于MC-CDMA系统。
The MC-CDMA system takes the advantages of the OFDM system and the CDMA system.The MC-CDMA system is a kind of wireless communication aroused an ongoing and growing research interests
which has the characteristics of high bit transmission rate
high bandwidth efficiency
anti-jamming
and a large system capacity.Since the MC-CDMA system includes the multi-carrier modulation
it is difficult to design a spread spectrum sequence performing not only a high level of self-correlation and cross-correlation but also a low peak-to-average power ratio in the MC-CDMA system.To solve this problem
a spread spectrum sequence which was modulated by Golay code and m sequence was proposed.The spread spectrum sequence proposed owned a good performance in self-correlation
cross-correlation and peak-to-average power ratio.The simulation results show the effectiveness and the superiority of the proposed spread spectrum sequence.
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