Method and system for diversity maximum likelihood spread spectrum communication bit synchronization

The present invention relates to a spread spectrum communication method and system synchronization bits, and more particularly to a weak signal conditions for the diversity of the maximum likelihood method and bit synchronous spread-spectrum communication system. According to the method and system of the present invention, the length N by the noncoherent integration length of M times K noncoherent integration implemented, and different candidate positions corresponding to the M-bit K times energy of comparison, each of the candidate positions appear bits M N times bit energy and the maximum energy of different bit boundary candidate position in the result set up to judge, without increasing the premise of non-coherent integration length, reducing the bit synchronization error probability.