LMS based blind channel estimation of SC-FDMA systems using variable step size and phase information

The variable step size (VSS) channel estimation (CE) method is proposed which updates during each iteration to minimise the sum of the squares of the prior estimation errors up to that current time point. In addition, this CE algorithm uses a phase discriminating weighting scheme such that the algorithm reduces error owing to noise as well as decision error. The proposed CE scheme is of little bit higher complexity than the VSS-LMS scheme while improving mean square error performance.