OQAM/OFDM信号二阶循环平稳性分析

李剑强; 崔伟亮; 江桦; 王宁

doi:10.3724/SP.J.1146.2010.01052

OQAM/OFDM信号二阶循环平稳性分析

doi: 10.3724/SP.J.1146.2010.01052

李剑强^{* 崔伟亮江桦王宁,},
崔伟亮,
江桦,
王宁

基金项目:

国家十一五重点项目(2009AA011504)资助课题

计量
- 文章访问数: 4124
- HTML全文浏览量: 92
- PDF下载量: 1058
- 被引次数: 0
出版历程
- 收稿日期: 2010-09-29
- 修回日期: 2011-02-09
- 刊出日期: 2011-05-19

Second-order Cyclostationarity Analysis of OQAM/OFDM Signals

Li Jian-Qiang^{* 崔伟亮江桦王宁
,},
Cui Wei-Liang,
Jiang Hua,
Wang Ning

摘要

摘要: OQAM/OFDM是一种基于正交滤波器组的多载波调制信号，其特殊的生成机制决定了循环谱结构的复杂性。该文从OQAM/OFDM系统的连续时间基带模型出发，证明了OQAM信号具有的二阶循环平稳性，推导了谱相关函数表达式，并分析了OQAM信号的各种谱相关特征，以及多径衰落信道对其的影响。仿真实验表明了理论分析的正确性。
- 偏移正交幅度调制(OQAM) /
- 循环平稳 /
- 谱相关函数(SCF) /
- 循环谱截面
Abstract: OQAM/OFDM is a sort of multicarrier signal based on the orthogonal filter bank, and its special generation procedure determines the complexity of cyclic spectral structure. According to the continuous-time baseband model of OQAM/OFDM system, the second-order cyclostationarity of OQAM signals is proved, and the explicit expression of spectral correlation function is derived, meanwhile, the features of Spectral Correlation Function (SCF) for OQAM and the influence of multipath fading channel are investigated. Simulation results sustain the theoretical analysis.
- Offset Quadrature Amplitude Modulation (OQAM) /
- Cyclostationary /
- Spectral Correlation Function (SCF) /
- Cyclic spectrum profiles

HTML全文

参考文献(1)

Siohan P, Siclet C, and Lacaille N. Analysis and design of OFDM/OQAM systems based on filterbank theory[J]. IEEE Transaction on Signal Processing, 2002, 50(5): 1170-1172.[2] 胡苏, 武刚, 肖悦, 李少谦. OFDM/OQAM系统中联合迭代信道估计和信号检测[J]. 电子与信息学报, 2009, 31(10): 2332-2337.Hu Su, Wu Gang, Xiao Yue, and Li Shao-qian, et al.Joint iterative channel estimation and detection for OFDM/OQAM system [J]. Journal of Electronics Information Technology, 2009, 31(10): 2332-2337.[3] Dobre A, Abdi A, Bar-Ness Y, and Su W. Survey of automatic modulation classification techniques: classical approaches and new trends [J]. IET Communication, 2007, 1(2): 137-156.[4] Gardner W A. The spectral correlation theory of cyclostationary time-series [J]. Signal Processing, 1986, 11(1): 13-36.[5] Punchihewa A, Dobre O A, and Rajan S, et al.Cyclostationarity-based algorithm for blind recognition of OFDM and single carrier linear digital modulations [C]. 18th Annual IEEE Internatioal symposium on PIMRC, 2007, Athens, 2007: 1-5.[6] Bouzegzi A, Ciblat P, and Jallon P. New algorithm for blind recognition of OFDM based systems [J]. Signal Processing, 2010, 90(3): 900-913.[7] Zhang Hai jian, Ruyet D L, and Terre M. Spectral correlation of multicarrier modulated signals and its application for signal detection [J]. EURASIP Journal on Advances in Signal Processing, Vol. 2010, Article ID. 794246, 14 pages.[8] 黄奇珊, 彭启琮, 路友荣, 韩猛. OFDM信号循环谱结构分析[J]. 电子与信息学报, 2008, 30(1): 134-138.Huang Qi-shan, Peng Qi-cong, Lu You-rong, and Han Meng, et al.Cyclic spectrum analysis of OFDM signals [J]. Journal of Electronics Information Technology, 2008, 30(1): 134-138.[9] Gardner W A, Brown W A, and Chen C K. Spectral correlation of modulated signals: part II- digital modulation [J]. IEEE Transactions on Communications, 1987, 35(6): 595-601.[10] Vu?i? D Z, Obradovi? M M, and Obradovi? D M. Spectral correlation of OFDM signals related to their PLC applications [C]. 6th International Symposium on Power-Line Communications and Its Applications, ISMPLC, New Jersey, 2002: 27-29.[11] Sutton P D, Nolan K E, and Doyle L E. Cyclostationary signatures in practical cognitive radio applications [J]. IEEE Journal on Selected Areas Communications, 2008, 26(2): 13-24.[12] 蒋清平, 杨士中, 张天骐. 低信噪比OFDM信号符号周期盲估计[J]. 计算机应用, 2010, 30(6): 1463-1465.Jiang Qing-ping, Yang Shi-zhong, and Zhang Tian-qi. Symbol duration blind estimation of OFDM signals with low SNR [J]. Journal of Computer Application, 2010, 30(6): 1463-1465.[13] Gardner W A. Cyclostationarity in Communications and Signal Processing [M]. New Jersey: IEEE Press, 1993: 468-478.

施引文献

资源附件(0)

访问统计