HAL CCSD
Downlink MIMO HetNets: Modeling, Ordering Results and Performance Analysis
Dhillon, H.S.
Kountouris, Marios
Andrews, J.G.
Wireless Networking & Communications Group [Austin] (WNCG) ; University of Texas at Austin [Austin]
Supélec Sciences des Systèmes (E3S) ; Ecole Supérieure d'Electricité - SUPELEC (FRANCE)
International audience
ISSN: 1536-1276
IEEE Transactions on Wireless Communications
Institute of Electrical and Electronics Engineers
hal-00826978
https://centralesupelec.hal.science/hal-00826978
https://centralesupelec.hal.science/hal-00826978
IEEE Transactions on Wireless Communications, 2013, 12 (10), pp.5208-5222. ⟨10.1109/TWC.2013.090513.130142⟩
ARXIV: 1301.5034
info:eu-repo/semantics/altIdentifier/arxiv/1301.5034
DOI: 10.1109/TWC.2013.090513.130142
info:eu-repo/semantics/altIdentifier/doi/10.1109/TWC.2013.090513.130142
en
[MATH.MATH-IT]Mathematics [math]/Information Theory [math.IT]
[INFO.INFO-IT]Computer Science [cs]/Information Theory [cs.IT]
info:eu-repo/semantics/article
Journal articles
We develop a general downlink model for multi-antenna heterogeneous cellular networks (HetNets), where base stations (BSs) across tiers may differ in terms of transmit power, target signal-to-interference-ratio (SIR), deployment density, number of transmit antennas and the type of multi-antenna transmission. In particular, we consider and compare space division multiple access (SDMA), single user beamforming (SU-BF), and baseline single antenna transmission. For this general model, the main contributions are (i) ordering results for both coverage probability and per user rate in closed-form for any BS distribution for the three considered techniques, using novel tools from stochastic orders, (ii) upper bounds on the coverage probability assuming a Poisson BS distribution, and (iii) a comparison of the area spectral efficiency (ASE). The analysis concretely demonstrates, for example, that for a given total number of transmit antennas in the network, it is preferable to spread them across many single-antenna BSs vs. fewer multi-antenna BSs. Another observation is that SU-BF provides higher coverage and per user data rate than SDMA, but SDMA is in some cases better in terms of ASE.
2013-10