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Performance study of fixed and moving relays for vehicular users with multi-cell handover under co-channel interference

Sui Yutao (Institutionen för signaler och system, Kommunikationssystem) ; Zhe Ren ; Sun Wanlu (Institutionen för signaler och system, Kommunikationssystem) ; Tommy Svensson (Institutionen för signaler och system, Kommunikationssystem) ; Peter Fertl
IEEE International Conference on Connected Vehicles and Expo p. 514-520. (2013)
[Konferensbidrag, refereegranskat]

In this paper, we investigate the power outage probability (OP) of a vehicular user equipment (VUE) device served by half-duplex decode-and-forward relay nodes (RNs) under co-channel interference. Both moving RNs (MRNs) and fixed RNs (FRNs) are studied, and compared with the baseline, base station (BS) to VUE direct transmission. In order to understand the benefit for vehicular users served by an RN, we consider practical channel models for different involved links as well as the impact of handover (HO) between the BS and the RNs. For an accurate comparison, we present a comprehensive framework to optimize the HO parameters, as well as we numerically optimize the FRN position which minimizes the average power OP at the VUE. FRN shows its advantage to serve its nearby VUEs. However, when vehicular penetration loss is moderate to high, MRN assisted transmission greatly outperforms transmission assisted by an FRN as well as direct transmission. Hence, the use of MRNs is very promising for improving the quality-of-service (QoS) of VUEs in future mobile communication systems.

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Denna post skapades 2014-01-06. Senast ändrad 2015-03-30.
CPL Pubid: 191327


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