Topic
High-bit-rate digital subscriber line
About: High-bit-rate digital subscriber line is a research topic. Over the lifetime, 516 publications have been published within this topic receiving 8537 citations. The topic is also known as: HDSL & high-bit-rate DSL.
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29 Jul 1999
TL;DR: In this article, the authors present an integrated services digital network telecommunications installation, which has an interface on the exchange side for connection to a network terminator basic access device (1) or for direct connection to digital exchange (2), with a coupling field and transcoder for bit rate conversion inserted between the opposing interfaces, each provided with a memory for temporary storage of data.
Abstract: The telecommunications installation (3) has an interface on the exchange side for connection to a network terminator basic access device (1), or for direct connection to a digital exchange (2) and an interface on the subscriber side for connection to a number of subscriber devices (4,5), with a coupling field and a transcoder for bit rate conversion inserted between the opposing interfaces, each provided with a memory for temporary storage of data. OF DLRAWING - The drawing shows an integrated services digital network telecommunications installation. Network terminator basic access, 1. Digital exchange, 2. Telecommunications exchange, 3. Subscriber devices, 4, 5.
18 Mar 2016
TL;DR: In this paper, the authors present a chronological account of major milestones in fixed-line data and digital voice systems, including twisted pair copper wires traditionally used for the telephony system, coaxial copper cables used for inter exchange links and cable TV broadcasting; and optical fiber systems used for international and long-distance telephony and telecommunications backhaul.
Abstract: Three fixed‐line media are of main interest to broadband telecommunications: twisted pair copper wires traditionally used for the telephony system; coaxial copper cables used for inter‐exchange links and cable TV broadcasting; and optical fibre systems used for international and long‐distance telephony and telecommunications backhaul. This chapter presents a chronological account of major milestones in fixed‐line data and digital voice systems. The performance of twisted pair copper wire systems is affected by interference from other telephone connections. This interference is generally known as crosstalk, and exists in two main types: near end crosstalk (NEXT) far end crosstalk (FEXT). While much of additive noise is random and therefore difficult to remove, the crosstalk interference signals are deterministic and therefore it is possible to calculate and remove them from the received signal. Asymmetric digital subscriber line (ADSL)/very‐high‐bit‐rate DSL (VDSL) standards have evolved to deliver higher transmission rates in both upstream and downstream.
06 Dec 1992
TL;DR: The receiver filter optimization problem is re-examined in the context of the high-bit-rate digital subscriber line (HDSL) application and an alternative matched filter implementation is introduced as a practical suboptimal receiver front end filter in conjunction with a baud-rate finite-length DFE.
Abstract: The receiver filter optimization problem is re-examined in the context of the high-bit-rate digital subscriber line (HDSL) application. The performance gap between an ideal decision feedback equalizer (DFE) and a baud-rate DFE is derived. An alternative matched filter implementation that does not introduce additional low-frequency phase distortion is introduced as a practical suboptimal receiver front end filter in conjunction with a baud-rate finite-length DFE. >
07 Aug 2002
TL;DR: An effective method of computer-aided testing of amplitude-frequency responses of telephone lines for the link is shown.
Abstract: The quality control of subscriber lines is carried out both at receiving trials, and at holding operations. In this paper an effective method of computer-aided testing of amplitude-frequency responses of telephone lines for the link is shown.
01 Jan 1999
TL;DR: The evaluation of very high-speed digital subscriber lines (VDSL) performance is proposed by modifying an ADSL transceiver by using a near end crosstalk generator and symmetrical echo cancelled-signal.
Abstract: The evaluation of very high-speed digital subscriber lines (VDSL) performance is proposed by modifying an ADSL transceiver. By using a near end crosstalk generator and symmetrical echo cancelled-signal, a symmetrical VDSL experimental system in the bit rate range of 6 to 8 Mbps is set up.