12-04-2008

Just figured out what was wrong with my dot product calculation. I was multiplying two 16 bit integers together and they were rolling over. A simple cast to int32 and the problem was solved. Onward! Update: 4:14 PM Here’s and efficient implementation of the dot product that I wrote for the ARMv5E: ; void dot_product(int32 …

12-03-2008

Now that IQ demodulation is working, it’s on to CORDIC. The trick is to try and get this done in a reasonable amount of time. If it’s not possible then I’ll have to explore other options for computing atan2. I only need accuracy to 0.1 degrees so that may help a bit. Update: 2:05 PM …

12-02-2008

Today I’m going to try and figure out why my FIR Filter doesn’t seem to work properly. I’m doing IQ Demodulation for a radio location system we’re developing but the output of my new FIR Filter looks really weird. Hopefully it’s just the taps for the filter that are wrong. I’ll update this post as …

New site!

Well I’m on a new server so it’s time for a brand new website!  I’m adding the old content back but it’s a slow process.  Stay tuned.