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With the introduction of DVB-T2 in Germany and other European countries as new standard for Digital Video Broadcasting the underlying passive radar signal processing has also to be adapted, because the currently used predecessor, DVB-T, is not compatible to DVB-T2 on the physical layer. DVB-T2 has been improved in order to achieve a higher data rate and to allow more flexibility for different use...
The Direct-Video-Broadcast Satellite (DVB-S) standard is used to provide video and radio to millions of users worldwide. It is designed to provide quasi-error free satellite communications. This paper discusses some of the limitations of the DVB-S standard, describes some attempts in related work to address these concerns, and presents a new modification to enhance the performance and reliability...
Digital Video Broadcasting — Satellite — Second Generation (DVB-S2) and Digital Video Broadcasting — Return Channel via Satellite (DVB-RCS) are two important commercial satellite communications (SATCOM) standards, for forward link and return link information transmission via satellites, correspondingly. Advanced channel coding schemes have been designed in DVB-S2 and DVB-RCS to mitigate the information...
In this paper we propose a hybrid Zadoff-Chu (ZC) based pilot sequence suitable for OFDM broadcast systems. While maintaining the same scattered pilot structure and the same power level as in DVB-T2, we replace the phase values by a ZC combined sequence. This combined sequence can either carry information bits through a repetition of small ZC patterns, or serve just as a very robust fine time domain...
After ten years of successful deployment, the second generation satellite standard for digital video broadcasting, DVB-S2, has been updated to include very low signal-to-noise ratio modes to better support mobile and very small terminal applications without changing its fundamental structure. This paper provides a high level discussion on several of the most important aspects of the updated standard.
This paper treats the exploration of carrier (frequency/phase) synchronization methods for use in second generation of Digital Video Broadcasting — Return Channel via Satellite (DVB-RCS2). This new standard specifies reference bursts consisting of very limited number of known symbols and operation of turbo code decoder at extremely low Signal to Noise Ratio (SNR). The abovementioned constraints rule...
The basic idea of the “Tower Overlay over LTE-A+” system (TOoL+) is to offload popular services, especially live video, from cellular networks, thereby decreasing the operational cost of such networks. This can be realized by using High Tower High Power (HTHP) transmitters whose signals can be seen as an overlay to the cellular networks. For the integration of HTHP signals into the cellular networks,...
Cognitive Radio requires the architecture of radio systems to combine reception and spectrum monitoring functionality efficiently. We propose a flexible digital front end that supports concurrent synchronization and sensing of high-throughput wireless standards. The chip is implemented in 65 nm CMOS technology resulting in a chip area of 6.4 mm2. Fine grain clock gating allows synchronization at 4...
In this paper, we address the problem of orthogonal frequency-division multiplexing (OFDM) channel estimation in the presence of phase noise (PHN) and carrier frequency offset (CFO). In OFDM systems, PHN and CFO cause two effects: the common phase error (CPE) and the intercarrier interference (ICI) which severely degrade the accuracy of the channel estimate. In literature, several algorithms have...
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