Neyman-Person Theorem (1/7) Detection is Hypothesis test from observations Ho Nothing but noise Null hypo. H Something with noise Alternative hypo. Goal:Infer from x[n],what is true.Ho or Hi Example Detect DC in WGN Ho cin]=wlnl Hy xIn]=A+wln] whxiong@uestc.edu.cn 7whxiong@uestc.edu.cn Neyman-Person Theorem (1/7) 7 Detection is Hypothesis test from observations Example : Detect DC in WGN H0 x[n] = w[n] H1 x[n] = A + w[n] H0 Nothing but noise Null hypo. H1 Something with noise Alternative hypo. Goal: Infer from x[n], what is true. H0 or H1