SRTS Application in High Speed Transmission System

SRTS方法在高速傳輸系統的應用

10.7060/KNUJST.200706.0063

林尚亭(Sun-Ting Lin)；張誌軒(Chih-Hsuan Chang)

SRTS ； 固定位元傳輸速率 ； 高品質數位電視 ； SRTS ； CBR ； HDTV

高雄師大學報：自然科學與科技類

22期（2007 / 06 / 01）

63 - 70

英文

SRTS可用於ATM網路上提供固定位元傳輸速率服務，以應用在高解析度的視訊、語音等即時性服務。 然而，SRTS這項技術也可以應用在其它較高傳輸速率的服務上，例如高品質數位電視(high definition television, HDTV)，從影像廣播－直到Gbp速率的範圍，所需用到的傳輸速率為2.48832 Gbp(STM-16)，因為影像信號週期對於網路週期是非同步的，所以週期補償的同歩技術是必要的。但是，在高傳輸速率中的同步技術是一大挑戰。 在本論文中，我們將焦點著重在以CBR訊號的週期補償方法及將SRTS運用在高傳輸速率服務中。我們除了建立SRTS的發送、接收電路外，還分析在高傳輸速率服務下的相關參數的設定，找出SRTS方法在高速應用中的最佳設定值。

Synchronous residual timing stamp (SRTS) is a technique originally used for encoding and transporting synchronous timing information for constant bit rate (CBR) traffic over asynchronous transfer mode (ATM) network. Recently, this technique can also be applied to other services with higher transmission rate such as video broadcasting up to the order of Gbps range such as high definition television (HDTV). The corresponding clock rate of transmission link for those high bit rate video services should be 2.48832 Gbps (Synchronous Transport Module-level 16, STM-16) instead of 155.52 Mbps (STM-1). The clock recovery is necessary since the service clock for the video signal is asynchronous to the network clock. To apply the SRTS method in a new service with different transmission rates, the related parameters should be analyzed and redesigned. In this paper, we build up the SRTS transmitter and receiver as well as analyze the jitter performance at the high bit rate services to minimize jitter generation in the SRTS method.

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