Abstract-This paper provides a review of the second generation of Terrestrial Digital Video Broadcasting standard DVB-T2. DVB-T2 is the evolution of DVB-T and, together with DVB-S2 and DVB-C2, inaugurated a new transition from the first generation digital broadcasting systems, similar to the transition from analog to digital systems. In the paper the most relevant features of DVB-T2 are explained in detail, along with their benefits and trade-offs.The paper also presents a comprehensive review of the laboratory and field trial results available so far. Especial emphasis is placed in the results of the measurements carried out to test the mobile reception and the novel technologies as Multiple Input Single Output (MISO) and Time Frequency Slicing (TFS).

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Abstract.-New trends in technology require efficient control and processing platforms based on connected software-hardware subsystems. Due to their complexity and size, algorithms implemented on these platforms are difficult to test and verify. When these types of solution are being designed, it is necessary to provide information of the internal values of registers and memories of both the software and hardware during the execution of the complete system. The final architecture of the targeted design and its debugging capabilities strongly depends on how the hybrid system is connected and clocked. This article discusses different architectural strategies that have been adopted for a hybrid hardware-software platform, built ready for debug, and that uses components that can be easily found with a few special features. All the solutions have been implemented and evaluated using the UNSHADES-2 framework 1 .

Visible light communication (VLC) systems with a direct current-biased optical orthogonal frequency division multiplexing (DCO-OFDM) architecture suffers from the wellknown problem of high peak-to-average power ratio (PAPR). A DCO-OFDM signal at the input of the light emitting diode (LED) with high PAPR can experience clipping due to its limited dynamic-range. This causes distortion and degradation of the signal quality, forcing a large power back-off, and so leading to an inefficient use of the LEDs. In order to resolve this problem, we propose to apply a power de-rating reduction technique at the VLC transmitter based on a modification of the active constellation extension (ACE) method with two important changes: a better predictor of the power de-rating than the PAPR, the cubic metric (CM), and a more effective clipping stage. With the proposed method, we achieve a significant CM reduction as large as 7.1 dB, which contributes to a noticeable gain in the input power back-off of 2.5 dB or an important reduction of signal distortion, and a greater illumination to communication efficiency (ICE), higher than 30%.