TY - GEN
T1 - Analysis of area spectral efficiency and link reliability in multiuser MIMO HetNets
AU - Li, Chang
AU - Zhang, Jun
AU - Song, S. H.
AU - Letaief, K. B.
PY - 2015/9/9
Y1 - 2015/9/9
N2 - Heterogeneous networks (HetNets) provide an effective way to meet the explosive growth of mobile data traffic. Previous studies have revealed that the successful transmission probability, i.e., the link reliability, of a SISO HetNet is invariant to the base station (BS) density. This indicates that the area spectral efficiency (ASE) can be increased by densifying the network, without sacrificing the link performance. However, in this paper, we shall show that the above invariance property no longer holds in multi-antenna HetNets. More specifically, changing the BS density will affect both the link reliability and the ASE, and there exists a tradeoff between these two important performance metrics. By adopting the Poisson point process to model the BS positions, we develop an exact expression of the successful transmission probability for general multiuser MIMO HetNets. We then use this result to evaluate the tradeoff between the ASE and the link reliability. It is analytically shown that the maximum successful transmission probability of the network is achieved by activating only the tier of BSs with the largest number of antennas per BS, while the maximum ASE is achieved by activating all the BSs. By adjusting the density of each tier of the HetNet, a tradeoff between the link reliability and ASE can be achieved.
AB - Heterogeneous networks (HetNets) provide an effective way to meet the explosive growth of mobile data traffic. Previous studies have revealed that the successful transmission probability, i.e., the link reliability, of a SISO HetNet is invariant to the base station (BS) density. This indicates that the area spectral efficiency (ASE) can be increased by densifying the network, without sacrificing the link performance. However, in this paper, we shall show that the above invariance property no longer holds in multi-antenna HetNets. More specifically, changing the BS density will affect both the link reliability and the ASE, and there exists a tradeoff between these two important performance metrics. By adopting the Poisson point process to model the BS positions, we develop an exact expression of the successful transmission probability for general multiuser MIMO HetNets. We then use this result to evaluate the tradeoff between the ASE and the link reliability. It is analytically shown that the maximum successful transmission probability of the network is achieved by activating only the tier of BSs with the largest number of antennas per BS, while the maximum ASE is achieved by activating all the BSs. By adjusting the density of each tier of the HetNet, a tradeoff between the link reliability and ASE can be achieved.
KW - area spectral efficiency
KW - link reliability
KW - multi-antenna heterogeneous networks
KW - Poisson point process
UR - http://www.scopus.com/inward/record.url?scp=84953735713&partnerID=8YFLogxK
U2 - 10.1109/ICC.2015.7248757
DO - 10.1109/ICC.2015.7248757
M3 - Conference article published in proceeding or book
AN - SCOPUS:84953735713
T3 - IEEE International Conference on Communications
SP - 2839
EP - 2844
BT - 2015 IEEE International Conference on Communications, ICC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE International Conference on Communications, ICC 2015
Y2 - 8 June 2015 through 12 June 2015
ER -