Blind feedforward timing estimation for constant-modulus signalling in time-varying fading channels

A simple low-complexity algorithm is proposed for blind feedforward symbol timing estimation in time-varying flat-fading channels,assuming constant modulus signalling. its important properties are brought out using asymptotic analysis. it is shown that at high signal-to-noise ratios (snrs),the algorithm results in a timing estimate with negligible bias. it also has a mean-square-error (mse) performance that is superior for short data records and small roll-off factors to that of the square-law-(sql-) and the cyclostationarity-(cs-) based algorithms available to date. computer simulations are presented to demonstrate effectiveness of the algorithm. © 2010 shankar prakriya.