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Article Dans Une Revue IEEE Transactions on Communications Année : 2017

Asymptotic Analysis of Area Spectral Efficiency and Energy Efficiency in PPP Networks with SLNR Precoder

Résumé

This paper aims at characterizing the energy efficiency area spectral efficiency (EE-ASE) tradeoff in random geometry networks with multiple-antenna arrays at base stations (BSs). In particular, ASE and EE are studied w.r.t. the transmit power when BSs use a signal-to-leakage-plus-noise ratio (SLNR) precoder. When the static power consumption cannot be neglected, EE behaves linearly w.r.t. ASE before a sharp decreasing of EE due to the interference-limited characteristic of the network. Our contribution relies on the derivation of a closed-form expression for ASE with SLNR precoder in the asymptotic regime, i.e. when the number of antennas and users grows to infinity, using stochastic geometry. We derive EE from a linear power consumption model afterwards. Unlike conventional SLNR precoders, the average signal-to-interference-plus-noise ratio and the leakage to other cells are considered in a geometry dependent network. Extensive Monte Carlo simulations show that despite the asymptotic nature of the theoretical analysis, the closed-form expressions are tight w.r.t. simulations even for moderate number of antennas and users. Hence, the analysis can be used for realistic network performance analysis.
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Dates et versions

hal-01551410 , version 1 (30-06-2017)

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Ahmad Mahbubul Alam, Philippe Mary, Jean-Yves Baudais, Xavier Lagrange. Asymptotic Analysis of Area Spectral Efficiency and Energy Efficiency in PPP Networks with SLNR Precoder. IEEE Transactions on Communications, 2017, 65 (7), pp.3172 - 3185. ⟨10.1109/TCOMM.2017.2699192⟩. ⟨hal-01551410⟩
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