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Authors: | Philipp Blum, Lothar Thiele |
Group: | Computer Engineering |
Type: | Inproceedings |
Title: | Trace-Based Evaluation of Clock-Synchronization Algorithms for Wireless Loudspeakers |
Year: | 2004 |
Month: | September |
Pub-Key: | BT05 |
Book Titel: | Second Workshop on Embedded Systems for Real-Time Multimedia (ESTIMedia 2005) |
Pages: | 7-12 |
Keywords: | SN |
Publisher: | IEEE |
Abstract: | We present an evaluation strategy for clock synchronization algorithms. It is based on a combination of measured traces, which provide for realistic performance estimation, and of simulation, which guarantees repeatability. The evaluation strategy includes parameteroptimization to allow for a fair comparison of algorithms; a general purpose evolutionary optimizer is used for this purpose. The strategy is applied in a case study, evaluating the performance of four clock synchronization algorithms in the wireless loudspeakers application. We find that the phase-locked loop algorithm, as well as the linear-regression and the gradient algorithm achieve sufficient synchronization in a lightly loaded network. Only the local selection algorithm is able to maintain sufficient synchronization under heavy network load, as generated for example by concurrent audio or video streaming. |
Location: | Stockholm, Sweden |
Resources: | [BibTeX] [Paper as PDF] |