For the characteristics of amplitude and phase-modulated signals in non-cooperative burst communication like less known information, less data, and low signal to noise ratio, Modified Constant Modulus Algorithm (MCMA) is concentrated on and a blind equalization algorithm is designed based on soft constellation information. The proposed algorithm could achieve a quick blind equalization while just using the statistics of the samples of the receiver and adopting the ideology of cyclic iteration. The scheme has a lower complexity, better flexibility while disregarding the modulation type, which made it a good choice for non-cooperative condition. The simulation indicates that the new algorithm has a superior on existing algorithms in converging speed, equalization result, and durability while keeping the performance on defensing noise, frequency offset and phase offset, and can be applied into engineering practice.
黄焱,邱钊洋,欧阳喜. 基于星座软信息的猝发信号盲均衡算法[J]. 电子与信息学报, 2017, 39(3): 568-574.
HUANG Yan,QIU Zhaoyang, OUYANG Xi. Blind Equalization for Burst Signals Based on Soft Information of Constellation. JEIT, 2017, 39(3): 568-574.
ABRAR Shafayat and NANDI Asoke K. An adaptive constant modulus blind equalization algorithm and its stochastic stability analysis[J]. IEEE Signal Processing Letters, 2010, 17(1): 55-58. doi: 10.1109/LSP.2009. 2031765.
YANG Faquan. The key techniques and theories research on Modulation recognition for wireless communication signals [D]. [Ph.D. dissertation], Xidian university, 2015.
ZHAO Xiongwen, GUO Chunxia, and LI Jingchun. Mixed recognition algorithm for signal modulation schemes by high-order cumulants and cyclic spectrum[J]. Journal of Electronics & Information Technology, 2016, 38(3): 674-680. doi: 10.11999/JEIT150747.
CHEN Zeyi. A combined modulation recognition based on cyclic spectrum and high-order cumulants[J]. Telecommunication Engineering, 2015, 16(3): 328-332. doi: 10.3969/j.issn.1001-893x.2015.03.017.
[5]
KIL Yamoh and YONG Ohkchin. Modified constant modulus algorithm: blind equalization and carrier phase recovery algorithm[C]. IEEE International Conference on Communications, Seattle, USA, 1995: 498-502. doi: 10.1109 /ICC.1995.525219.
XU Hua, ZHENG Hui, and ZHANG Dongmei. Analysis of constant modulus blind equalization algorithms based on “data reuse”[J]. Journal on Communications, 2009, 30(7): 73-77.
[7]
OERDER M and MEYR H. Digital filter and square timing recovery[J]. IEEE Transactions on Communications, 1988, 36(5): 605-612. doi: 10.1109/26.1476.
[8]
刘少林. MPSK信号调制方式识别与参数估计[D]. [博士论文],北京邮电大学, 2015.
LIU Shaolin. Modulation recognition and parameter estimation of MPSK signals[D]. [Ph.D. dissertation], Beijing University of Posts and Telecommunications, 2015.
[9]
ROY S and SHYNK J. Analysis of the data-reusing LMS algorithm[C]. The Thirty-Second Midwest Symposium on Circuits and Systems, Champaign, IL, USA, 1989: 1127-1130. doi: 10.1109/MWSCAS.1989.102053.
[10]
SCHNAUFER B A and JENKINS W K. New data-reusing LMS algorithms for improved convergence[C]. The Twenty- Seventh Asilomar Conference on Signals, Systems and Computers, California, USA, 1993: 1584-1588. doi: 10.1109/ ACSSC.1993.342346.
[11]
SONI R, GALLIVAN K, and JENKINS W. Low-complexity data reusing methods in adaptive filtering[J]. IEEE Transactions on Signal Processing, 2004, 52(2): 394-405. doi: 10.1109/TSP.2003.821338.
[12]
许华. 短时突发信号的盲处理技术研究[D]. [博士论文], 解放军信息工程大学, 2005.
XU Hua. Blind equalization techniques on short burst signals [D]. [Ph.D. dissertation], Information Engineering University of PLA, 2005.
[13]
GODARD D N. Self-recovering equalization and carrier tracking in two-dimensional data communication systems[J]. IEEE Transactions on Communications, 1980, 28(11): 1867-1875. doi: 10.1109/TCOM.1980.1094608.
LIAO Canhui, TU Shilong and WAN Jian. An anti- frequency-offset algorithm for modulation recognition of satellite amplitude-phase modulated signal[J]. Journal of Electronics & Information Technology, 2014, 36(2): 346-352. doi: 10.3724/SP.J.1146.2013.00512.
ZHAO Ying. Estimation of carrier frequency of modulation signal based on improved algorithm[J]. Electronic Design Engineering, 2016, 24(6): 29-31. doi: 10.14022/j.cnki.dzsjgc. 2016.06.065.