Broadband access using subcarrier multiplexing and asymmetric digital subscriber lines
✍ Scribed by Keang-Po Ho; Yiu Fai Ng; Wing Bun Chan
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 265 KB
- Volume
- 13
- Category
- Article
- ISSN
- 1074-5351
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✦ Synopsis
A broadband access system using subcarrier multiplexing on optical "bre and asymmetric digital subscriber lines (ADSL) or very high-speed digital subscriber lines (VDSL) on unshielded twisted-pair is proposed to provide broadband access. In this hybrid-"bre/twisted-pair (HFTP) system, the digital multiplexing/ demultiplexing process is moved back to the central o$ce by using subcarrier multiplexing for "bre transmission. Instead of installing in remote node, ADSL/VDSL transceivers are installed at the central o$ce to greatly reduce the remote node complexity. The local node simply down-converts the subcarrier multiplexed ADSL/VDSL signal to the baseband, suitable to send directly into the twisted-pair. The reduction of complexity could result in a lower initial installation cost, especially for a low service penetration rate.