March 2012 - DSP LOG

Thermal Noise and AWGN

Krishna Sankar13 years ago13 years ago101 mins

A friend called me up couple of days back with the question – How white is AWGN? I gave him an answer over phone, which he was not too happy about. That got me thinking bit more on the topic and the result is this post – brief write up on thermal noise and it’s…

Hamming (7,4) code with soft and hard decoding

Krishna Sankar13 years ago13 years ago161 mins

An earlier post we discussed hard decision decoding for a Hamming (7,4) code and simulated the the bit error rate. In this post, let us focus on the soft decision decoding for the Hamming (7,4) code, and quantify the bounds in the performance gain.