Massive MIMO Optimization with Compatible Sets

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Massive MIMO Optimization with Compatible Sets. / Fitzgerald, Emma; Pióro, Michał; Tufvesson, Fredrik.

In: IEEE Transactions on Wireless Communications, 2019, p. 2794 - 2812.

Research output: Contribution to journalArticle

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TY - JOUR

T1 - Massive MIMO Optimization with Compatible Sets

AU - Fitzgerald, Emma

AU - Pióro, Michał

AU - Tufvesson, Fredrik

PY - 2019

Y1 - 2019

N2 - Massive multiple-input multiple-output (MIMO) is expected to be a vital component in future 5G systems. As such, there is a need for new modeling in order to investigate the performance of massive MIMO not only at the physical layer but also higher up the networking stack. In this paper, we present general optimization models for massive MIMO, based on mixed-integer programming and compatible sets, with both maximum ratio combining and zero-forcing precoding schemes. We then apply our models to the case of joint device scheduling and power control for heterogeneous devices and traffic demands, in contrast to the existing power control schemes that consider only homogeneous users and saturated scenarios. Our results show that substantial benefits, in terms of energy usage, can be achieved without sacrificing throughput and that both the signaling overhead and the complexity of end devices can be reduced by abrogating the need for uplink power control through efficient scheduling.

AB - Massive multiple-input multiple-output (MIMO) is expected to be a vital component in future 5G systems. As such, there is a need for new modeling in order to investigate the performance of massive MIMO not only at the physical layer but also higher up the networking stack. In this paper, we present general optimization models for massive MIMO, based on mixed-integer programming and compatible sets, with both maximum ratio combining and zero-forcing precoding schemes. We then apply our models to the case of joint device scheduling and power control for heterogeneous devices and traffic demands, in contrast to the existing power control schemes that consider only homogeneous users and saturated scenarios. Our results show that substantial benefits, in terms of energy usage, can be achieved without sacrificing throughput and that both the signaling overhead and the complexity of end devices can be reduced by abrogating the need for uplink power control through efficient scheduling.

U2 - 10.1109/TWC.2019.2908362

DO - 10.1109/TWC.2019.2908362

M3 - Article

SP - 2794

EP - 2812

JO - IEEE Transactions on Wireless Communications

JF - IEEE Transactions on Wireless Communications

SN - 1536-1276

ER -