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HARQ in Poisson Point Process-based Heterogeneous Networks

Chao Fang (Institutionen för signaler och system, Kommunikationssystem) ; Behrooz Makki (Institutionen för signaler och system, Kommunikationssystem) ; Tommy Svensson (Institutionen för signaler och system, Kommunikationssystem) ; Yateng Hong ; Xiaodong Xu
IEEE Vehicular Technology Conference (1550-2252). Vol. 2015 (2015),
[Konferensbidrag, refereegranskat]

Hybrid automatic repeat request (HARQ) plays an important role in improving the transmission efficiency and the robustness of wireless networks. Considering K-tier heterogeneous networks (HetNets) and modelling the locations of the base stations (BSs) as a homogeneous Poisson point process (PPP), this paper investigates the performance of HetNets implementing HARQ. We give closed-form expressions for the coverage probability and the per-user throughput with HARQ and show that using HARQ can indeed improve the coverage probability. However, depending on the channel conditions, the per-user throughput of the HetNets may decrease by the implementation of HARQ. Furthermore, we show that the small cell density has negligible effect on the coverage probability and per-user throughput, and the per-user throughput may increase with the small cell path loss.



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Denna post skapades 2014-10-14. Senast ändrad 2017-03-21.
CPL Pubid: 204247

 

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