| EPSRC Reference: |
GR/J67925/01 |
| Title: |
FORCAST: FORWARD ERROR CONTROL FOR AMPLIFIED SUBMARINE TELECOMMUNICATIONS |
| Principal Investigator: |
O'Reilly, Professor Sir JJ |
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| Department: |
Electronic and Electrical Engineering |
| Organisation: |
UCL |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 August 1994 |
Ends: |
31 January 1998 |
Value (£): |
139,266
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Summary on Grant Application Form |
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The aim of this project is to assess the extent to which alternative signal coding and receiver signal processing - including but not restricted to conventional error control - may improve the performance, reach and/or robustness of submarine optical fibre telecommunications transmission systems. Of particular interest is the extent to which operation at the line rate may be effected, thereby enabling received signal sequence structure, associated with the non-linearities of the channel, to be taken into account. Progress:A comparative assessment of alternative error control coding schemes has been undertaken and we have shown that rather less complex binary codes - as opposed to the Reed-Solomon codes currently adopted in initial experimental studies - can in principle meet the desired error performance targets and offer more graceful degradation characteristics outside the design range. A novel simulation acceleration technique has been devised and reported, enabling the performance of the various codes to be established down to the very low error values of importance for demanding transmission applications. Encoding and decoding arrangements compatible with operation at the line rate are being studied and in particular a buffered decoding architecture is under investigation in this context. A relatively low complexity transmitter signal coding/processing scheme has been devised which offers promise as a means of ameliorating the problems of self phase modulation - especially for long single span systems and this is being studied in the first instance with the aid of an established system simulator.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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