The spread of wideband services to the office and home through fixed and terrestrial mobile netwo... more The spread of wideband services to the office and home through fixed and terrestrial mobile networks will create a market for the extension of such services for people on the move and for those who work outside the office environment. Various wideband terrestrial cellular systems will serve users at both local and global level, although the scope for deployment of such systems in the early phase (2000+) will be limited to densely populated and affluent areas, resulting in a potential requirement for wireless access technologies which can connect users to the network in other areas.
2008 IEEE International Workshop on Satellite and Space Communications, 2008
For satellite systems offering broadband and telecom services at Ka band frequencies and above Fa... more For satellite systems offering broadband and telecom services at Ka band frequencies and above Fade Mitigation Techniques (FMT), in particular Adaptive Modulation and Coding (ACM), are essential to improve the system capacity. One of the important aspects of ACM from a physical and MAC layer perspective is the choice of transmission modes to be used during the system operation that would achieve the optimal trade-off between the system complexity and performance. This paper deals with one such methodology of selecting the appropriate set of transmission modes (MODCOD subset) from a physical layer point of view for both DVB-S2 and extended DVB-RCS systems. Optimizing the achievable spectral efficiency with respect to implementation complexity has been the main focus of the proposed methodology. In particular, we show that subsets with 8 and 5 transmission modes provide best trade-off between the complexity of the ACM based system and the achieved average spectral efficiency for the forward and return link of the DVB-S2/RCS system respectively.
2006 International Workshop on Satellite and Space Communications, 2006
Abstract High altitude platform (HAP) system offers establishment of communication links with pre... more Abstract High altitude platform (HAP) system offers establishment of communication links with predominantly line-of-sight (LOS) conditions due to high elevation angles. However, in mobile scenario, the transmitted signal is still subject to blocking due to obstacles between ...
The spread of wideband services to the office and home through fixed and terrestrial mobile netwo... more The spread of wideband services to the office and home through fixed and terrestrial mobile networks will create a market for the extension of such services for people on the move and for those who work outside the office environment. Various wideband terrestrial cellular systems will serve users at both local and global level, although the scope for deployment of such systems in the early phase (2000+) will be limited to densely populated and affluent areas, resulting in a potential requirement for wireless access technologies which can connect users to the network in other areas.
2008 IEEE International Workshop on Satellite and Space Communications, 2008
For satellite systems offering broadband and telecom services at Ka band frequencies and above Fa... more For satellite systems offering broadband and telecom services at Ka band frequencies and above Fade Mitigation Techniques (FMT), in particular Adaptive Modulation and Coding (ACM), are essential to improve the system capacity. One of the important aspects of ACM from a physical and MAC layer perspective is the choice of transmission modes to be used during the system operation that would achieve the optimal trade-off between the system complexity and performance. This paper deals with one such methodology of selecting the appropriate set of transmission modes (MODCOD subset) from a physical layer point of view for both DVB-S2 and extended DVB-RCS systems. Optimizing the achievable spectral efficiency with respect to implementation complexity has been the main focus of the proposed methodology. In particular, we show that subsets with 8 and 5 transmission modes provide best trade-off between the complexity of the ACM based system and the achieved average spectral efficiency for the forward and return link of the DVB-S2/RCS system respectively.
2006 International Workshop on Satellite and Space Communications, 2006
Abstract High altitude platform (HAP) system offers establishment of communication links with pre... more Abstract High altitude platform (HAP) system offers establishment of communication links with predominantly line-of-sight (LOS) conditions due to high elevation angles. However, in mobile scenario, the transmitted signal is still subject to blocking due to obstacles between ...
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Papers by M. Mohorcic