A transceiver system for dual‐simplex high‐bit‐rate digital subscriber lines |
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| Authors: | Shyue‐Win Wei Hou‐Chun Ting Sheu‐Chih Cheng |
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| Affiliation: | 1. Telecommunication Laboratories , Ministry of Transportation and Communications , Chungli, Taiwan 320, R.O.C.;2. Department of Electrical Engineering , Chung Hua Polytechnic Institute , Hsinchu, Taiwan, ROC;3. Institute of Eletronics , National Chiao Tung University , Hsinchu, Taiwan, ROC |
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| Abstract: | Abstract High bit‐rate digital subscriber lines (HDSL) technology is a new technology that may provide bi‐directional transmission at a rate of 1.544 Mb/s in conventional copper wires. A transceiver system for dual‐simplex (DSX)‐HDSL is presented. Simulation results show that the DSX‐HDSL system combined with simple pair‐selection can provide 18Kft/24AWG service distance without line repeaters. In the presented DSX‐HDSL transceiver, 2B1Q code with (1‐D) precoding is used to reduce the inter‐symbol interference (ISI) and the dynamic range of signal. Hence, a 12‐bit or less A/D converter can satisfy the performance requirement. In addition, another switchable (1‐D) filter is used in the receiver to shorten the duration of channel response, therefore a (5, 32) hybrid‐decision‐feedback‐equalizer (DFE) can obtain an adequate performance. |
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| Keywords: | high‐bit‐rate digital subscriber lines (HDSL) circuits and systems |
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