Spectral Overlap Optimization for DVB-T2 and LTE Coexistence

Hiba Bawab 1, 2, 3 Philippe Mary 1 Jean-François Hélard 1 Youssef Nasser Oussama Bazzi 4
1 IETR - Institut d'Electronique et de Télécommunications de Rennes
2 Lebanese University [Beirut]
3 Orange Labs
4 LIU - Lebanese International University
Abstract : In this paper, we analyze the spectral coexistence between the second generation terrestrial digital video broadcasting (DVB) 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 twofold 1) 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 and 2) 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.
Keywords : interference cancellation (IC) DVB-T2 LTE spectral overlap power allocation RF coexistence
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Hiba Bawab, Philippe Mary, Jean-François Hélard, Youssef Nasser, Oussama Bazzi. Spectral Overlap Optimization for DVB-T2 and LTE Coexistence. IEEE Transactions on Broadcasting, Institute of Electrical and Electronics Engineers, 2018, 64 (1), pp.70-84. ⟨10.1109/TBC.2018.2795458⟩. ⟨hal-01770198⟩

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