论文信息 - A long reach digital subscriber loop transceiver

A long reach digital subscriber loop transceiver

An echo-cancelling duplex transmission system is described for the digital subscriber loop which uses a 4-level zero redundancy line code (2B1Q) to give very long reach in the presence of crosstalk. Novel digital signal processing algorithms are used to simplify the analogue line interface circuitry. All the digital signal processing, along with sophisticated maintenance and interfacing circuitry, can be contained on a single LSI circuit. Measured performance results are presented.

P. F. Adams | S. A. Cox | R. B. P. Carpenter | N. G. Cole

[1] David D. Falconer,et al. Timing Jitter Effects on Digital Subscriber Loop Echo Cancellers: Part I - Analysis of the Effect , 1985, IEEE Transactions on Communications.

[2] P. F. Adams,et al. Long reach duplex transmission systems for ISDN access , 1984 .

[3] Theo A. C. M. Claasen,et al. Design Considerations for a 144 kbit/s Digital Transmission Unit for the Local Telephone Network , 1984, IEEE J. Sel. Areas Commun..

[4] K. Mueller,et al. Timing Recovery in Digital Synchronous Data Receivers , 1976, IEEE Trans. Commun..

[5] S. A. Cox. Clock sensitivity reduction in echo cancellers , 1985 .

[6] P. F. Adams,et al. Line coding and intersymbol interference in local network transmission systems , 1983 .

[7] S. A. Cox,et al. An analysis of digital transmission techniques for the local network , 1985 .

[8] David G. Messerschmitt,et al. Nonlinear Echo Cancellation of Data Signals , 1982, IEEE Trans. Commun..

[9] R. P. Colbeck,et al. A 160-kb/s digital subscriber loop transceiver with memory compensation echo canceller , 1986 .

[10] C. Cowan,et al. Non-linear system modelling: Concept and application , 1984, ICASSP.