Abstract:

A new spacetime equalizer with wavelet transformation based on structure risk minimum criterion (WSRMSTE) is present to improve convergence speed by a wavelet transformation. In some dimensions wavelet signal space, it not only takes advantage of learning information in communication signals, but also appropriately exploits structure information of filters. It adaptively adjusts wavelet coefficients and capacity control coefficients. Simulation is carried out. It shows that, compared with a spacetime equalizer based on structure risk minimum criterion, and a typic spacetime equalizer with wavelet transformation based on support vector machine, the WSRMSTE is with better track performance and rapid convergence speed. So, it can be applied to wireless mobile communications.

Key words: spacetime equalization, filter, wavelet transformation, capacity control, structure risk minimum