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Coexistence conditions of LTE-advanced at 3400–3600 MHz with TVRO at 3625–4200 MHz in Brazil

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Abstract

In Brazil, the 3625–4200 MHz frequency band (C-band) is widely used by TV receive-only (TVRO) application in the fixed satellite service (FSS). The 3400–3600 MHz adjacent band can be used by International Mobile Telecommunications (IMT) systems, but many low noise block downconverters (LNB) of TVRO sold in Brazil have not a C-band filter. Thus, it is likely that the low cost LNB used in TVRO receivers would be overloaded by the IMT-systems emissions within the LNB wideband receiver, even the IMT stations operating accordingly to international standards. This paper shows that both systems can coexist harmoniously depending on the characteristics of the IMT system and on the FSS receiver specifications.

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Notes

  1. This value is used in several interference studies, e.g. [28,29,30,31]. Besides, in a recent analysis using Seamcat, Anatel (the Telecommunications Regulatory Body of Brazil) analyzed the harmful interference caused by a LTE base station (operating at the 700 MHz frequency band) in TV receivers. Simulations using Seamcat showed a probability of harmful interference of about 5% for an LTE base station with equivalent radiated power of 54 dBm [29]. Nevertheless, by the time this paper is being written, no critical interference from the recently deployed LTE-700 MHz network to the broadcasting receivers was detected, following the same pattern experience of other countries [32].

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Authors and Affiliations

  1. National Telecommunications Agency – Anatel, Brasília, Brazil

    Leandro Carísio Fernandes & Agostinho Linhares

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  1. Leandro Carísio Fernandes
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  2. Agostinho Linhares
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Correspondence to Leandro Carísio Fernandes.

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This paper reflects the authors’ own opinion and do not necessarily reflects the official policy or position of Anatel.

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Fernandes, L.C., Linhares, A. Coexistence conditions of LTE-advanced at 3400–3600 MHz with TVRO at 3625–4200 MHz in Brazil. Wireless Netw 25, 105–115 (2019). https://doi.org/10.1007/s11276-017-1544-8

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