Spatial Interference Cancellation for Multi-Antenna Mobile Ad Hoc Networks
Kaibin Huang, Jeffrey G. Andrews, Dongning Guo, Robert W. Heath, Jr.,, and Randall A. Berry

TL;DR
This paper analyzes how multiple antennas and zero-forcing beamforming can significantly improve the transmission capacity of mobile ad hoc networks by canceling interference, with mathematical modeling and numerical validation.
Contribution
It provides a stochastic geometry-based analysis of the impact of interference cancellation and CSI accuracy on transmission capacity scaling in MANETs.
Findings
Canceling one interferer increases capacity by over tenfold.
Transmission capacity scales with the number of canceled interferers as L^(1-2/α).
CSI inaccuracy has negligible effect when training sequences are properly designed.
Abstract
Interference between nodes is a critical impairment in mobile ad hoc networks (MANETs). This paper studies the role of multiple antennas in mitigating such interference. Specifically, a network is studied in which receivers apply zero-forcing beamforming to cancel the strongest interferers. Assuming a network with Poisson distributed transmitters and independent Rayleigh fading channels, the transmission capacity is derived, which gives the maximum number of successful transmissions per unit area. Mathematical tools from stochastic geometry are applied to obtain the asymptotic transmission capacity scaling and characterize the impact of inaccurate channel state information (CSI). It is shown that, if each node cancels L interferers, the transmission capacity decreases as the outage probability to the power of 1/(L+1) as the outage probability vanishes. For fixed outage probability, as L…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsMobile Ad Hoc Networks · Cooperative Communication and Network Coding · Advanced MIMO Systems Optimization
