Self-Adjustment Channel Rank Based on Reordered Cholesky Factorization

http://www.wocn2012.org/This paper presents a self-adjustment of the length of the channelimpulse response using a classical Cholesky Factorization. This isof special importance in the context of algorithms containing amatrix inversion and the rank of this matrix is strongly related tothe length of the channel impulse, i.e. interferer cancellationalgorithm.When the length of the channel impulse response is overestimated,the matrix inversion is carried out with a singularmatrix. A self-adjustment is then required to avoid an increase inthe noise level