According to the restriction between the acquisition performance and the hardware consumption, a two-stage compressive acquisition method was proposed based on compressive sensing, specifically some coarse acquisition values can be got by the first stage, following by accurately detecting the signal in the values by the second stage. Firstly, the sparsity of DSSS signal in the correlation domain was explored, so as to build the sparsity transformation matrix. Secondly, the measurement matrixes and detection algorithms in both stages were produced according to the deterministic Walsh-Hadamard matrix. Finally, the acquisition performance of the provided method was analyzed theoretically in terms of the detection probability and the mean acquisition time, which was also verified by Monte Carle method. The theoretical analysis and the simulation results show that the novel method can use much less correlations to achieve the same performance as conventional parallel correlation-based methods.
程艳合, 杨文革. 基于压缩感知的DSSS信号双阶段捕获方法[J]. 北京航空航天大学学报, 2015, 41(4): 624-631.
CHENG Yanhe, YANG Wenge. Two-stage acquisition algorithm for DSSS signal based on compressive sensing. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2015, 41(4): 624-631.
田日才. 扩频通信[M].北京:清华大学出版社,2006:1-26. Tian R C.Spread spectrum communication[M].Beijing:Tsinghua University Press,2006:1-26(in Chinese).
[2]
Huang Z J, Zhou J,Chen B,et al.A novel two-dimensional space-time processing scheme for DS/CDMA code acquisition[C]//International Conference on Signal Processing,Communication and Computing.Kunming:IEEE,2013:1-6.
[3]
Myeongsu H, Takki Y,Kang C,et al.A new adaptive code-acquisition algorithm using parallel sub filter structure[J].IEEE Transactions on Vehicular Technology,2006,55(6):1790- 1796.
[4]
Wu H B, Hu Y H.Fast acquisition of GPS signal in low SNR environments[C]//The 2nd International Conference on Information Science and Engineering.Hangzhou:IEEE,2010:4534-4537.
[5]
Liu S X, Feng W Q,Xiong H G,et al.A FFT based long-code acquisition algorithm suitable for FPGA implementation[C]//2011 International Conference on Electric Information and Control Engineering.Wuhan:IEEE,2011:5621-5624.
[6]
Hong L. Research on global positioning system M-code acquisition method and the acquisition performance[J].IET Communications,2014,8(5):587-596.
[7]
Tian M H, Feng Y X,Liu F.On the scheme of rapid acquisition of long PN code in DSSS Signals[C]//The 5th International Conference on.Kunming:IEEE,2009:457-460.
[8]
Li H,Cui X, Lu M,et al.Dual-folding-based rapid search method for long PN-code acquisition[J].IEEE Transactions on Wireless Communication,2008,7(12):5286-5296.
[9]
Feng W Q. Dual-channel method for fast long PN-code acquisition[J].Communications,China,2014,11(5):60-70.
[10]
Candes E J, Tao T.Decoding by linear programming[J].IEEE Transactions on Information Theory,2005,51(12):4203-4215.
[11]
Donoho D L. Compressive sensing[J].IEEE Transactions on Information Theory,2006,52(4):1289-1306.
[12]
Candes E J, Wakin M B.An introduction to compressive sampling[J].IEEE Signal Processing Magazine,2008,25(2):21-30.
[13]
Calderbank R, Howard S,Jafarpour S.Construction of a large class of deterministic sensing matrices that satisfy a statistical isometry property[J].Selected Topics in Signal Processing,2010,4(2):358-374.
[14]
Ouyang W L. Fast algorithm for walsh hadamard transform on sliding windows[J].IEEE Transactions on Pattern Analysis and Machine Intelligence,2010,32(1):165-171.
[15]
Sofotasios P C, Freear S.Novel expressions for the Marcum and one dimensional Q-functions[C]//7th International Symposium on Wireless Communication Systems.York:IEEE,2010:736-740.
[16]
Ward P W. GPS receiver search techniques[C]//IEEE Position Location and Navigation Symposium.Atlanta:IEEE,1996:604-611.