Equalisation of Time Variant Multipath Channels Using Amplitude Banded LMS Algorithms(Digital Signal Processing)(Regular Section)

For the purpose of equalisation of rapidly time variant multipath channels, we derive a novel adaptive algorithm, the amplitude banded LMS(ABLMS), which implements a non-linear adaptation based on a coefficient matrix. Then we develop the ABLMS algorithm as the adaptation procedure for a linear transversal equaliser(LTE)and a decision feedback equaliser(DFE)where a parallel adaptation scheme is deployed. Computer simulations demonstrate that with a small increase of computational complexity, the ABLMS based parallel equalisers provide a significant improvement related to the conventional LMS DFE and the LMS LTE in the case of a second order Markov communication channel model.copyright(c)2001 IEICE許諾番号：07RB0174 http://www.ieice.org/jpn/trans_online/index.htm