Error surfaces of normalized blind channel equalization algorithms
نویسندگان
چکیده
Some recent normalized constant modulus algorithms possess surprisingly improved error performance surfaces (EPSs). In this paper, we look at the EPSs of these algorithms in the symbol-spaced setting. The lack of channel disparity in the fractionally-spaced setting is also considered. It is found that normalization has a decreasing e ect as the equalizer length is increased and causes the stationary points to drift. While the drift is small for the Desirable Local Solutions (DLSs), it is more signi cant for the Undesirable Local Solutions (ULSs) some of which cease to exist.
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