Time interleaving study for an OFDM long-haul HF radio link

• Published in: IET 11th International Conference on Ionospheric Radio Systems and Techniques (IRST 2009) pp. 264 - 267
• Main Authors: Bergada, P, Deumal, M, Alsina, R.M, Pijoan, J.L
• Format: Conference Proceeding
• Language: English
• Published: Stevenage IET 2009
• Subjects: Radio links and equipment; Radiowave propagation; time interleaving effect; geostationary satellite visibility; remote sensors; ionospheric electromagnetic wave propagation; multipath channels; time-varying long-haul ionospheric channel; multipath channel; OFDM long-haul HF radio link; HF radio propagation; time-varying channels; skywave ionospheric communication; low-rate data transmission; OFDM modulation
• ISBN: 1849191239; 9781849191234
• DOI: 10.1049/cp.2009.0076

Communication with remote places is a challenge that in most cases is solved by means of satellites. However, for low-rate data transmission from remote sensors placed in Antarctic stations, this solution, a part from being too costly is of disadvantage since the geostationary satellite visibility is poor. In such scenarios, Skywave ionospheric communication systems represent a practical alternative to satellites. HF communications suffer from impaired propagation, i.e. long delay spread, medium Doppler values, high level of attenuation and high level of interference. To cope with some of these impairments, in this paper, a study of the time interleaving effect applied to OFDM symbols transmitted through a multipath time-varying long-haul ionospheric channel is studied.