A buffer level clock recovery based on least mean squares in PTN

Abstract

Packet Transport Network (PTN) supports multiple services, including legacy TDM service. Clock recovery mechanism is essential technology for TDM over packet networks. As the buffer level clock recovery method in PTN is highly sensitive to the Packet Delay Variation (PDV), a buffer level clock recovery based on least mean squares (LBL) is proposed. Simulation results show that LBL can effectively remove the negative contribution of packet delay jitter and provide more accurate clock recovery at the destination than traditional scheme.