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TIMING LOSS DETECTOR FOR ROBUST DATA TRANSMISSION

IP.com Disclosure Number: IPCOM000007171D
Original Publication Date: 1994-Jun-01
Included in the Prior Art Database: 2002-Mar-01

Publishing Venue

Motorola

Related People

Authors:
Yong-Hwan Lee

Abstract

Unlike voice communication, data communica- tion, can be seriously affected by a transient chan- nel impairment. In some cases, synchronization between the transmitter and the receiver may not be recovered in the presence of these kinds of impairments without a forced reinitialization proc- ess. Therefore, it is highly desirable for data com- munication equipment to have an efficient synchro- nization loss detector for robust recovery. In this paper, one such detector is proposed for high speed data transceivers with a secondary channel embedded in the main channel. A known sequence multiplexed with the secondary channel data is repeatedly sent through the embedded secondary channel. For continuous watch-dog like operation, the detection is sequentially performed based on a modified up/down counter scheme. The performance of the proposed detector is analytically evaluated in closed form.