Method and apparatus for improving the accuracy of a received composite signal s(t) that contains a known reference signal S.sub.d (t) with a known bit transition period .DELTA.tchip and that may contain a multipath signal S.sub.m (t;.chi.;b) with an unknown multipath time delay b and an unknown multipath...http://www.google.com/patents/US6002361?utm_source=gb-gplus-sharePatent US6002361 - Direct integrated approach to multipath signal identification
