Finally, simulation results of WCCs with Twill structure over AWGN show that BER performance is affected greatly by the transmission frame length, return-to-zero mode and the number of encoders, and also indicate that proper selection of encoder and interleaver can improve error-correcting performance greatly and has no error floor.

In order to find a new method to improve the skill of short-rang climate prediction,a complex autoregressive model is established based on mathematic derivation of the complex least-square,in which the conventional least-square formula is extended from the real number domain into the complex number domain.