Satellite Communications: Research Trends and Open Issues

Abstract

Abstract-A panoramic view on the study and design of digital designed by the DVB-T2 group. Again, the DVB-T2 specifisatellite communication links is the focus of this paper. Starting cations will be OFDM-based and will include state-of-the-art from the characterization of satellite propagation channel in solutions such as MIMO, low density parity check (LDPC) different application environments (from broadcast to fixed terminals, to broadband mobile satellite access), we address scodin scm,prolayrorte rocreinFC physical layer aspects related to satellite communications in the smart and fast synchronization techniques. attempt of providing the Reader with an overview of the new Satellite communications are not immune from this wave trends and open issues in this field.of innovation. In the DVB forum, after the publication of the DVB-S2 standard and the approval of the DVB-SH specifica-

Outage Performance of Cognitive Hybrid Satellite–Terrestrial Networks With Interference Constraint

“…Satellite communication has been widely used in various areas, such as broadcasting, disaster relief and navigation due to its potential in providing wide coverage and achieving higher data transmission rate at a low cost (see e.g., [1]- [3] and the references therein). Under this situation, many researches have investigated the key performance merits of satellite communications, such as outage probability (OP), average symbol error rate (ASER) and ergodic capacity [4]- [8].…”

Cooperative multiple-access scheme with antenna selection and incremental relaying

“…These ones can be used to expand the system coverage area, extend the battery life time, increase the system reliability, and increase the system transmission rate. Recently, several segments with a great variety of applications, such as vehicular communications, cellular networks, sensor networks, and satellite communications, are taking into consideration the use of those techniques in order to improve the system performance [5], [9].…”

Orthogonal Frequency Division Multiplexing Based Air Interfaces and Multiple Input Multiple Output Techniques in Cooperative Satellite Communications for 4th Generation Mobile Systems

“…To this aim, it is necessary to combine both networks into a hybrid architecture that possesses the flexibility to transmit high data rates from the source to the end user. In order to obtain such high data rates, it is also necessary to use higher order digital modulations, i.e., M-PSK or M-QAM, along with a bandwidth efficient scheme, like orthogonal frequency multiple access (OFDM) [4]. It is also imperative to adapt the recent trend of Cooperative Communications (CC) to this hybrid satellite/terrestrial network, so the link is as reliable as possible and the transmission of information is guaranteed.…”

“…Satellite communications are not immune to this wave of innovation [4]. In March 2006, during the DVB forum after the publication of the DVB-S2 standard and the approval of DVB-SH specifications, the Commercial Module approved the mission of extending DVB-RCS to mobile scenarios, yielding the DVB-RSC+M mode.…”

“…The use of higher order modulations over satellite links [4] must be carefully designed, and strong error correction algorithms must be used. In addition, as mentioned at the beginning of this dissertation, OFDM is required to obtain a better spectral efficiency and to transmit high data rates.…”