| EPSRC Reference: |
GR/K20804/01 |
| Title: |
DEVELOPMENT AND ASSESSMENT OF ADAPTIVE CONTROL OF THE RADIO CHANNEL IN TDMA CELLULAR SYSTEMS |
| Principal Investigator: |
Dunlop, Professor J |
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| Department: |
Electronic and Electrical Engineering |
| Organisation: |
University of Strathclyde |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 January 1995 |
Ends: |
30 June 1998 |
Value (£): |
119,925
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| EPSRC Research Topic Classifications: |
| RF & Microwave Technology |
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Summary on Grant Application Form |
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(1) Enhancement of computational modelling tools for transmission of nonlinear pulses in optical fibre.(2) Evaluation and optimisation of current system designs.(3) Development of novel techniques for soliton transmission.Progress:We have developed our existing numerical tools to account for polarisation effects in long distance transmission systems. Recent experimental studies indicate that these are a significant issue and further work will seek to quantify their impact. Additionally, we have developed a user friendly display package to allow easy interpretation of the results.By using design diagrams we have shown that, in their simplest form, soliton systems can transmit 5 Gb/s over 6500 km and 2.5 Gb/s over 20,000 km. It transpires that the straight line filtering method of soliton control does very little to improve these figures, and so we have concentrated on developing novel means of improving performance.We have conceived and evaluated the following innovative concepts in soliton transmission: post transmission dispersion compensation for, reduction of Gordon-Haus jitter, mid-span optical phase conjugation for jitter reduction and pulse interaction reversal; step wise dispersion profiling of the transmission fibre; use of a single mid-span phase modulator for jitter reduction and the transmission of picosecond pulses using Nonlinear Optical Loop Mirrors as saturable absorbers.
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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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| Date Materialised |
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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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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.strath.ac.uk |