Spectral Overlap Optimization for DVB-T2 and LTE Coexistence

Abstract

In this paper, we analyze the spectral coexistence between the second generation terrestrial Digital Video Broadcasting (DVB-T2) and the Long Term Evolution (LTE) networks. In particular, the global spectral efficiency (SE) of both systems is investigated when a partial spectral overlap between DVB and LTE signals occurs. Our contribution lies in two-folds: i) the interfering signal variance in each network is derived analytically according to the frequency overlap while taking into account the difference between the characteristics of LTE and DVB networks, especially the OFDM subcarrier spacing and then the OFDM symbol duration. ii) the SE is derived with uniform and non uniform power allocation between overlapped and non overlapped subcarriers of the two networks. This derivation offers an analytical evaluation of the effect of the spectral overlap ratio variation and different power allocation scenarios and provides insightful results on the cooperation between the two networks.

Optimization of hybrid broadcast/broadband networks for the delivery of linear services using stochastic geometry

“…The authors concluded that the global capacity is affected positively by increasing the mobile power, and negatively by the BC power, and that the maximization of mobile and BC capacities are opposite objectives. The authors then studied in [146] the spectral efficiency of such a hybrid network, in the cases of uniform and non-uniform power allocation, and for different spectral overlapping ratios. In both works, the ICI in the cellular network was not considered.…”

“…Handover [143]. Coverage [152] Service sharing [142,143,148,149] User sharing [144,146,147,151,152,155] BC/MC Service offload [143] Personalization.…”

Very High-Performance Echo Canceller for Digital Terrestrial Television in Single Frequency Network

“…In [17], the authors analyze the required overhead to ensure a target average signal-to-interference-plus-noise ratio (SINR) using Time-division multiple access (TDMA) of each node. In [18], the interference cancellation (IC) reduces interference effect, and the overlap ratio could be enhanced while maintaining a high quality of service (QoS). The echo cancellation method has been studied in [19], [20], and analyzed in a deferent domain such as in [21] for voice over IP (VoIP) communication acoustic echo.…”

A low complex peak‐to‐average power ratio reduction in orthogonal frequency division multiplexing systems using a two‐dimensional interleaving strategy

“…OFDM is the current state‐of‐the art technique underlying most of wireless communication systems. To name a few, fourth generation (4G), fifth generation (5G), 1 and Digital Video Broadcast (DVB‐T1/2) 2 . The main drawback of OFDM systems is high peak‐to‐average power ratio (PAPR) which causes severe nonlinear distortion (NLD) at the output of the power amplifiers and digital to analog converters (DACs) in the RF processing chain 3 .…”