Blind Estimation Algorithm of the Linear Block Codes Parameters Based on WHT
Yang Xiao-wei①② Gan Lu①
①(Department of Information Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China) ②(National Laborotory of Information Control Technology for Communication System, Jiaxing 314033, China)
Abstract：A new approach is presented for blind estimation of linear block codes parameters with noisy data. Firstly, the proposed method exploits the statistical properties of the dual codes and Walsh-Hadamard transform to determine whether a code is belong to dual code or not. Meanwhile, from the principle of “3 standard deviation”, a theoretical threshold to distinguish dual codes is induced. Then the code length and synchronization are estimated when the normalized dual space dimension reaches the maximum. Finally, the parity-check matrix is recovered by the dual codes. Computer simulation results show that the proposed method can provide good performance even when the bit error rate is 0.03.
杨晓炜, 甘露. 基于Walsh-Hadamard变换的线性分组码参数盲估计算法[J]. 电子与信息学报, 2012, 34(7): 1642-1646.
Yang Xiao-Wei, Gan Lu. Blind Estimation Algorithm of the Linear Block Codes Parameters Based on WHT. , 2012, 34(7): 1642-1646.
2012, Vol. 34 
