Two Extensional Applications of the Zero-Forcing Equalization Method

The zero-forcing automatic equalization technique is extended to equalization in quadrature amplitude modulation data transmission and TV transmission systems. A general cost function, whose minimization problem can be applied to the automatic equalization in the above two systems, is first presented. Based on this cost function, the zero-forcing equalizability condition is solved. Under this condition, simple algorithms, namely unit-increment or amplitude-dependent tap adjusting schemes, can be applied.