The very short frame of mobile DVB‐RCS: Code design and QoS Performance

Abstract

SUMMARYIn this paper, the design of a new very short frame introduced in the upcoming version of DVB-RCS standard targeting interactive mobile services will be described. The frame design with a special focus on channel coding and performance are addressed in detail, as well as an evaluation of the QoS performance for realistic traffic scenarios, propagation channel conditions, and carrier sizes.

Non‐binary protograph low‐density parity‐check codes for space communications

“…Owing to their excellent error correction capability combined with the availability of low complexity encoding/decoding algorithms, low-density parity-check (LDPC) codes [1] have recently been included in several satellite communications standards. Their application ranges from deep-space communications [2,3] to satellite broadcasting services [4] and up-links for interactive satellite systems [5]. In the past decade, LDPC code constructions were proposed that approach the Shannon limit within few tenths of decibel for large codeword lengths (n > 10000) [6,7].…”

Low complexity FEC Systems for Satellite Communication

“…It can be seen that at a BER of 10 −8 proposed 4K NG LDPC codes give approximately 0.5dB better performance than the corresponding codes in [4]. …”

“…The code has been simulated for offset min sum based LDPC decoding, the error performance results for rate 1/2 code is shown in figure below along with the performance of similar code proposed in [4]. It can be seen that at a BER of 10 −8 proposed 4K NG LDPC codes give approximately 0.5dB better performance than the corresponding codes in [4].…”

“…In [4] authors have proposed very short frames 4K LDPC codes to be used in the return link of DVB-RCS+M (Return Channel via Satellite) system. However designed code still uses BCH to remove errors due to trapping set at the error floor, which results in increased implementation complexity.…”

Introduction special issue on DVB‐RCS+M

“…Article 5-low rate coding/SCPC mode (introduction of very short frames) [5] In a mobile environment as mainly considered for DVB-RCS1M, it is actually the user group including the mobile that moves, such as a bus, train, ship, plane, etc. This suggests that, in contrast to, for example, home-and single user DVB-RCS terminals as well as in contrast to mobile phones, there is, in fact, a group of users behind the terminal.…”