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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Youhong Lu Guodong Shi Youlian Zhu Weige Tao |
| Copyright Year | 2008 |
| Description | Author affiliation: Critical Commun. Syst. Div., Bosch Commun. Syst., Burnsville, MN (Youhong Lu) |
| Abstract | In this paper, we show that the whole echo path in an FXO varies sharply and suddenly because multiple switches involved in a call could not be active at the same time. An echo canceller adapting the echo path, therefore, will have poor performance. We then present an echo cancellation system consisting of two echo cancellers: one is a fixed echo canceller canceling the echo from the switch inside FXO and another is an adaptive echo canceller canceling the echo from the switches inside analog line network. The fixed echo canceller coefficients are obtained during system booting or rebooting via applying white noise to an LMS algorithm. |
| Starting Page | 3590 |
| Ending Page | 3594 |
| File Size | 143933 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424421138 |
| DOI | 10.1109/WCICA.2008.4593496 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-06-25 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Echo cancellers Adaptive filters IP networks Matched filters Digital filters Filtering algorithms Filtering theory Two Echo Path Echo Cancellation FXO Line Card |
| Content Type | Text |
| Resource Type | Article |
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