A source clock recovery by receiving data filling rate in AAL1 traffic

This paper proposes a new timing recovery method by means of utilizing service data filling rate instead of timing information of transmitter. The proposed algorithm controls the phase locked loop in the opposite direction to data filling rate of FIFO in receiver, and it is based on the fact that average of cell jitters is zero. The proposed algorithm was implemented and tested in the DS3 rate video communication system. As a result, the proposed algorithm yields good performance in terms of jitters characteristics and hardware complexity.