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Spectrally Efficient Incremental Relaying for Coverage Expansion in Cellular Networks with Heterogeneous Path Loss Conditions

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Abstract

In this paper we propose a cooperative scheme in which fixed relays operate with a higher spectral efficiency than the source. The relay transmits L times faster than the source with L times the spectral efficiency, reducing the loss inherent to the orthogonal cooperation. We assume a large scale path loss model which is capable of handling with heterogeneous conditions between the nodes of the network: the source, the relay and the base-station antennas can be at different heights. Our results show that the proposed scheme consumes less energy while achieving up to 3 dB of gain, in terms of throughput, when compared to the baseline cooperative scheme. In addition, a coverage area analysis shows that the proposed scheme increases considerably the cell area when compared to the non-cooperative transmission and to the baseline cooperative scheme. Finally, we show that the proposed scheme, with a single relay, outperforms in the high signal to noise ratio region the regular cooperative scheme using multiple relays.

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Authors and Affiliations

  1. CPGEI, Federal University of Technology—Paraná (UTFPR), Curitiba, PR, 80230-901, Brazil

    Glauber Gomes de Oliveira Brante & Richard Demo Souza

  2. PPGIA, Pontifical Catholic University of Paraná (PUCPR), Curitiba, PR, 80215-901, Brazil

    Marcelo Eduardo Pellenz

Authors
  1. Glauber Gomes de Oliveira Brante
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  2. Marcelo Eduardo Pellenz
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  3. Richard Demo Souza
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Correspondence to Glauber Gomes de Oliveira Brante.

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de Oliveira Brante, G.G., Pellenz, M.E. & Souza, R.D. Spectrally Efficient Incremental Relaying for Coverage Expansion in Cellular Networks with Heterogeneous Path Loss Conditions. Wireless Pers Commun 64, 811–829 (2012). https://doi.org/10.1007/s11277-011-0221-y

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  • DOI: https://doi.org/10.1007/s11277-011-0221-y

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