greatestcon
Newbie level 1

In 802.11a Standard, the short preamble is defined as
sqrt(13/6)*ifft( [ 0 0 1+1i 0 0 0 -1-1i 0 0 0 ...
1+1i 0 0 0 -1-1i 0 0 0 -1-1i 0 0 0 1+1i 0 0 0 ...
0 0 0 0 -1-1i 0 0 0 -1-1i 0 0 0 1+1i 0 0 0 ...
1+1i 0 0 0 1+1i 0 0 0 1+1i 0 0 ]
How does this sqrt(13/6) come? I just know it is used for power normalization, but how can I compute it?
Thanks for help!!
sqrt(13/6)*ifft( [ 0 0 1+1i 0 0 0 -1-1i 0 0 0 ...
1+1i 0 0 0 -1-1i 0 0 0 -1-1i 0 0 0 1+1i 0 0 0 ...
0 0 0 0 -1-1i 0 0 0 -1-1i 0 0 0 1+1i 0 0 0 ...
1+1i 0 0 0 1+1i 0 0 0 1+1i 0 0 ]
How does this sqrt(13/6) come? I just know it is used for power normalization, but how can I compute it?
Thanks for help!!