Nuts and Bolts of a Realistic Stochastic Geometric Analysis of mmWave HetNets: Hardware Impairments and Channel Aging

Anastasios Papazafeiropoulos, Tharmalingam Ratnarajah, Pandelis Kourtessis, Symeon Chatzinotas

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
27 Downloads (Pure)

Abstract

Motivated by heterogeneous network (HetNet) design in improving coverage and by millimeter-wave (mmWave) transmission offering an abundance of extra spectrum, we present a general analytical framework shedding light on the downlink of realistic mmWave HetNets consisting of K tiers of randomly located base stations. Specifically, we model, by virtue of stochastic geometry tools, the multi-Tier multi-user (MU) multiple-input multiple-output (MIMO) mmWave network degraded by the inevitable residual additive transceiver hardware impairments (RATHIs) and channel aging. Given this setting, we derive the coverage probability and the area spectral efficiency (ASE), and we subsequently evaluate the impact of residual transceiver hardware impairments and channel aging on these metrics. Different path-loss laws for line-of-sight and non-line-of-sight are accounted for the analysis, which are among the distinguishing features of mmWave systems. Among the findings, we show that the RATHIs have a meaningful impact at the high-signal-To-noise-ratio regime, while the transmit additive distortion degrades further than the receive distortion the system performance. Moreover, serving fewer users proves to be preferable, and the more directive the mmWaves are, the higher the ASE becomes.

Original languageEnglish
Article number8676087
Pages (from-to)5657-5671
Number of pages15
JournalIEEE Transactions on Vehicular Technology
Volume68
Issue number6
DOIs
Publication statusPublished - 28 Mar 2019

Keywords

  • channel aging
  • Heterogeneous MIMO networks
  • millimeter wave transmission systems
  • performance analysis
  • transceiver hardware impairments

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