J.Tasic, M.Leban, I.Kale, B.Zajc, P.Blaznik.<br>
Systolic conjugate gradient adaptive echo cancellation.<br>
<i>Proc. 4th COST #229 WG.1 Workshop on Adaptive Methods and Emergent 
Techniques for Signal Processing and Communications</i>, pp.181-185, 
Ljubljana, Slovenia, April 1994.<p>

The paper describes an adaptive echo canceller which is based on the 
well-known LMS algorithm and the possibilities of the systolic realisation 
of an echo canceller based on the conjugate gradient algorithm. The conjugate 
gradient algorithm is supposed to be better than the LMS one, but it requires 
more computations and it is difficult to implement on a VLSI chip.
The systolic array for the conjugate gradient method, which can be used in 
the adaptation of the echo canceller, is presented and the computer 
simulation for the LMS and conjugate gradient algorithm in echo cancellation 
is given.