Performance Impact of LoS and NLoS Transmissions in Dense Cellular Networks

Select |




Print


Ding, Ming; Wang, Peng; Lopez-Perez, David; Mao, Guoqiang; Lin, Zihuai


2016-03-01


Journal Article


IEEE Transactions on Wireless Communications


15


3


2365-2380


In this paper, we introduce a sophisticated path loss model incorporating both line-of-sight (LoS) and non-line-of-sight (NLoS) transmissions to study their performance impact in small cell networks (SCNs). Analytical results are obtained on the coverage probability and the area spectral efficiency (ASE) for two user association strategies (UASs) assuming both a general path loss model and two special cases of path loss models recommended by the 3GPP standards. The performance impact of LoS and NLoS transmissions in SCNs in terms of the coverage probability and the ASE is shown to be significant both quantitatively and qualitatively, compared with previous work that does not differentiate LoS and NLoS transmissions. Particularly, our analysis demonstrates when the density of small cells is larger than a threshold, the network coverage probability will decrease as small cells become denser, which in turn makes the ASE suffer from a slow growth or even a notable decrease. For practical regime of small cell density, the performance results derived from our analysis are distinctively different from previous results, and show that small cell density matters. Therefore, our results shed new insights on the design and deployment of future SCNs.


Stochastic geometry, Homogeneous Poisson point process (HPPP), Line-of-sight (LoS), Nonline- of-sight (NLoS), Small cell networks (SCNs), Coverage probability, Area spectral efficiency (ASE)


https://doi.org/10.1109/TWC.2015.2503391


English


nicta:8656


Ding, Ming; Wang, Peng; Lopez-Perez, David; Mao, Guoqiang; Lin, Zihuai. Performance Impact of LoS and NLoS Transmissions in Dense Cellular Networks. IEEE Transactions on Wireless Communications. 2016-03-01; 15(3):2365-2380. <a href="https://doi.org/10.1109/TWC.2015.2503391" target="_blank">https://doi.org/10.1109/TWC.2015.2503391</a>



Loading citation data...

Citation counts
(Requires subscription to view)