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Modulation Classification using Cyclostationary Features on Fading Channels
並列摘要
In this study Automatic Modulation Classification (AMC) which is based on cyclostationary property of the modulated signal are discussed and implemented for the purpose of classification. Modulation Classification (MC) is a technique used to make better the overall performance of cognitive radios. Recently Cognitive Radio (CR) plays a key role in the field of communication. CR also used in the development of different wireless application and the exploitation of civilian and military applications. In modulated signals there is cyclostationary property that can be used for the detection of modulation formats. The extraction of cyclostationary features, is used for classification of digital modulation schemes at different values of SNR’s, the considered modulation formats are FSK [2-64], PSK [2-64], PAM [2-64] and QAM [2-64] and the channel models considered are AWGN and Rayleigh flat fading. When the receiver, receives the signal it extract the cyclostationary features i-e Spectral Coherence Function (SCF) and Cyclic Domain Profile (CDP) and then uses a multilayer perception which is also known as Feed Forward Back Propagation Neural Network (FFBPNN) for classification of the modulation formats. The performance of proposed algorithm in the form of confusion matrix shows the correct classification accuracy of the considered modulation format. The simulation result shows the performance of proposed algorithm and feature extraction at lower SNR's.
延伸閱讀
- Li, X. T., Lei, J., Liu, W., Li, E., & Li, Y. B. (2014). Blind Channel Estimation Based on Multilevel Lloyd-Max Iteration for Nonconstant Modulus Constellations. Journal of Applied Mathematics, 2014(), 617-623-052. https://doi.org/10.1155/2014/146207
- Liao, J. F. (2008). A New Full-Diversity Blind Channel Estimation and Equalization over Fast Time-Varying ISI Fading Channels [doctoral dissertation, National Tsing Hua University]. Airiti Library. https://doi.org/10.6843/NTHU.2008.00141
- 嚴煜焜（1997）。Implementation of Montgomery's Modulation Multiplication Algorithm Using Systolic Array〔碩士論文，元智大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0009-0112200611300868
- Hong, M. C. (2008). Frequency Synchronization and Channel Estimation for OFDM Systems over Frequency-Flat Channels: ML and LS Approaches. [master's thesis, Tamkang University]. Airiti Library. https://doi.org/10.6846/TKU.2008.00541
- Chen, K. C. (2013). Bit-interleaved Coded Differential Modulation Schemes for Correlated Fading Channels [master's thesis, National Tsing Hua University]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0016-1402201415092567