Clock recovery in communication systems

摘要

In a frequency hopped wireless network, more robust method and system are disclosed for recovering clock synchronization. The method and system of the invention relies on the fact that correct decoding of a received packet occurs only when the same clock value is used to generate the decoding sequence at both the sender and the receiver. Several decoding sequences are tried based on different clock values to decode the packet. The different clock values used may be adjacent or nearby an initial estimated clock value. The clock value of the first decoding sequence to result in a correctly decoded packet is taken as the proper clock value for synchronization. Correct decoding is determined by checking the CRC of the packet.