saeddawoud
Full Member level 3
hello
what is the difference between the coherent and non coherent detection of orthogonal FSK signals. i.e.: the minimum required frequency separation in coherent detection is 1/2T, where T is the symbol duration, to achieve the orthoganality. at the same time the minimum required separation in frequency to achieve orthogonality in non coheret detection is 1/T!! how is that?? isn't it the same signal, I mean the generation process in both coherent and non coherent is the same, but the detection process is different. so how is the minimum separation in frequency is 1/T and 1/2T at the smae time to achieve orthogonality. anyone can explain that supported with references or papers.
Thanx in advance.
what is the difference between the coherent and non coherent detection of orthogonal FSK signals. i.e.: the minimum required frequency separation in coherent detection is 1/2T, where T is the symbol duration, to achieve the orthoganality. at the same time the minimum required separation in frequency to achieve orthogonality in non coheret detection is 1/T!! how is that?? isn't it the same signal, I mean the generation process in both coherent and non coherent is the same, but the detection process is different. so how is the minimum separation in frequency is 1/T and 1/2T at the smae time to achieve orthogonality. anyone can explain that supported with references or papers.
Thanx in advance.