Hi, I am implementing an equalization algorithm for OFDM system. For this, after calculating the channel taps, we need to divide the complex sub-carrier symbols with complex tap values. I was wondering this division takes too many cycles for the DSP implementations. So is there any way of doing equalization in a better way or we have to live with this expensive division operation.
Equalization in OFDM
Started by ●October 14, 2008
Reply by ●October 14, 20082008-10-14
On Oct 14, 7:11 am, "Ubaid Abdullah" <ubaid_abdul...@yahoo.com> wrote:> Hi, > I am implementing an equalization algorithm for OFDM system. For this, > after calculating the channel taps, we need to divide the complex > sub-carrier symbols with complex tap values. I was wondering this division > takes too many cycles for the DSP implementations. So is there any way of > doing equalization in a better way or we have to live with this expensive > division operation.You need to compute something like a/b. Re-write as a*c where c = 1/ b. You can use a lookup table to map from b to c. This works really well for fixed-point processors.