Design of Multichannel AP-DCD Algorithm using Matlab

This paper presented design of a low complexity multichannel affine projection (AP) algorithm using Dichotomous Coordinate descent(DCD) iterations. The computational complexity of this proposed algorithm is analyzed, and it is shown through simulation that the new multichannel algorithm not only provides the same performance as affine projection algorithm, it could also be implemented in hardware. It is expected that the new algorithm will consume less memory and power because it requires less number of multiplications and additions. The performance of the multichannel AP-DCD algorithm depends on the number of updates. When the number of update (Nu) increases, the performance of the multichannel AP-DCD algorithm provides the same performance as AP algorithm. Furthermore, to offering a good convergence speed, the new algorithm provides the expected tradeoff between convergence performance and computational complexity.