Least Square (LS) Similar to linear model,assume s=H J(0)=(cn]-snl)2 =(x-H0)T(x-H0) whxiong@uestc.edu.cn 11whxiong@uestc.edu.cn Least Square (LS) 11 Similar to linear model, assume J(µ) = X(x[n] ¡ s[n]) 2 s = Hµ = (x ¡ Hµ) T (x ¡ Hµ)