srksp
Newbie level 5
sampling factor
I would be very much pleased if any one could explain me what is meant by sampling factor and how is it calculated in Wimax. In the standard they are telling to take various values like 8/7, 28/25 for n(i.e sampling factor). I want to know how can we get that factor. I know that it depends on number of subcarriers and bandwidth but i dont know how actually they arrived at that factor. For your reference i am pasting the line as given in the 802.16e standard.
"n: Sampling factor. This parameter, in conjunction with BW and Nused determines the subcarrier spacing, and the useful symbol time. This value is set as follows: for channel bandwidths that are a multiple of 1.75 MHz then n = 8/7 else for channel bandwidths that are a multiple of any of 1.25, 1.5, 2 or 2.75 MHz then n = 28/25 else for channel bandwidths not otherwise specified then n = 8/7."
I would be very much pleased if any one could explain me what is meant by sampling factor and how is it calculated in Wimax. In the standard they are telling to take various values like 8/7, 28/25 for n(i.e sampling factor). I want to know how can we get that factor. I know that it depends on number of subcarriers and bandwidth but i dont know how actually they arrived at that factor. For your reference i am pasting the line as given in the 802.16e standard.
"n: Sampling factor. This parameter, in conjunction with BW and Nused determines the subcarrier spacing, and the useful symbol time. This value is set as follows: for channel bandwidths that are a multiple of 1.75 MHz then n = 8/7 else for channel bandwidths that are a multiple of any of 1.25, 1.5, 2 or 2.75 MHz then n = 28/25 else for channel bandwidths not otherwise specified then n = 8/7."