Mobile and Satellite Communications

Current Projects


Investigating the integration of time diversity into the DVB-Sx (Digital Video Broadcasting via Satellite) protocol to improve link availability and throughput at Ka-band frequencies which are subject to significant impairments due to rain attenuation.

Mobility enhancement for the DVB-S2 protocol to allow reliable broadband multimedia communication via satellite using portable handheld devices.

Develop interference mitigation measures in multi-spot-beam terabit capacity satellite communication systems operating at Ka-/V-band frequencies.

Working on improved characterisation of the dynamics of rain attenuation on satellite links and have active radiometry, meteorological and satellite beacon measurements at two sites in Pontypridd and Chilbolton Observatory in England.



Books

Ifiok Otung, 2014, Digital Communications: Principles & Systems, Institution of Engineering and Technology (IET), London, ISBN 978-1849196116.

Sahena Begum and Ifiok Otung, 2011, Broadband satellite-integrated network design, VDM Publishing, Saarbrucken, Germany, ISBN 978-3-639-31427-4

Ifiok Otung, 2010, Outline of Satellite Communications, Pontypridd: University of Glamorgan, ISBN 978-1-84054-221-9

Ifiok Otung, Signals and Systems, Work In Progress. To be released next year if all goes well.

Journal Articles

Nagaraja C., and Otung I. E., 2012, “Statistical prediction of site diversity gain on earth-space paths based on radar measurements in the UK”, IEEE Trans. Antennas & Propagation, Vol. 60, No. 1, pp. 247-256, doi:10.1109/TAP.2011.2167896


Otung I. E., and Enoch S., 2011, “Mitigation of rain attenuation in fixed WiMAX using cell site diversity”, IET Electronics Letters, 3 March 2011, Vol. 47, Issue 5, p.349-351, doi:10.1049/el.2010.7367

Andersen JB, Eggers PCF, Otung I., “Modelling scintillations of the rain channel on a satellite link”, Under revision for submission to International Journal of Satellite Communications & Networking

Abdulkareem K., Richter J., Otung I., “XPD-induced interference in dual-polarised high capacity satellite communication systems”, Work completed; internal revisions in progress for submission to IEEE Transactions on Antennas & Propagation



Conference Papers

Otung I., “From GEO to LEO/MEO: Benefits of lower orbits satellite communications for oil and gas industry”, Invited Talk, 7th Oil and Gas Telecommunications Conference, London, March 2014


Ugalla L., Eastment J., and Otung I., “Evaluation of DVB-S2 Performance on an Experimental Ka-band Satellite Link in the UK”, 31st AIAA International Communication Satellite Systems Conference (ICSSC), Florence, Italy, 14-17 October 2013

Otung I., “Characterisation of nonlinearity and intermodulation distortion in C- & Ku-band satellite transponders”, 31st AIAA International Communication Satellite Systems Conference (ICSSC), Florence, Italy, 14-17 October 2013

Otung I., 2013, “Approaches to satellite networking: A critical evaluation of impact on capacity and quality of service”, Invited Paper, SMi Oil and Gas Telecommunications Conference, London, 20 – 21 March 2013

Ugalla L., Eastment J., and Otung I., 2012, “DVB-S2 link availability enhancement by integration with time diversity”, APSL Research Symposium, Sheffield, 17 Nov. 2012

Otung I. E., 2012, “Trends in satellite communications: Implications for Nigeria in the 21st century”, International Guest Lecture, African Regional Centre for Space Science and Technology Education, Ile-Ife, Nigeria, 22 June 2012

Otung I. E., Uggalla L., Eastment J., and Willis M., 2012, “EUTELSAT 20 GHz Beacon Measurements in the UK”, COST IC0802, Propagation tools and data for integrated telecommunication, navigation and earth observation systems, MCM 7, Portsmouth, 16-18 April 2012

Otung I. E., 2012, “Satellites in orbit: Tracking location and motion on earth”, UK National Science & Engineering Week, Cardiff, 17-18 March 2012

Otung I. E., 2012, “Bandwidth efficiency: Maximising your return on spectrum investment”, Oil & Gas Communications Conference, London, UK, 21-22 March 2012

Otung I. E., and Udofia K., 2011, “Efficacy of time diversity on V-band satellite links and impact of event dynamics”, Proceedings of ESA Workshop on Radiowave Propagation 2011, ESTEC, Noordwijk, The Netherlands, 30 Nov. – 2 Dec. 2011

Andersen J.B., Eggers P.C.F., and Otung I.E., 2011, “Statistics of rain attenuation revisited”, XXXth URSI General Assembly and Scientific Symposium., Istanbul, 13 – 20 Aug 2011

Otung I. E., 2011, “Mobile satellite communications in the 21st century: A review of the state of the art”, 2nd International Science Research Seminar, University of Calabar, Nigeria, 25 May 2011

Otung I. E., 2011, “Mobile Satellite Systems”, 4th Oil and Gas Telecommunications Conference, Marriott Regents Park, London, UK, 23 – 24 March 2011

Otung I. E., 2011, “Bringing space down to earth”, UK National Engineering and Science Week, Techniquest, Cardiff, UK, 19 March 2011