Distributed MIMO Interference Cancellation for Interfering Wireless Networks: Protocol and Initial Simulation
Author(s)
Cortes-Pena, Luis Miguel
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Abstract
In this report, the problem of interference in dense wireless network deployments is addressed. Two example scenarios are: 1) overlapping basic service sets (OBSSes) in wireless LAN deployments, and 2) interference among close-by femtocells.
The proposed approach is to exploit the interference cancellation
and spatial multiplexing capabilities of multiple-input multiple-
output (MIMO) links to mitigate interference and improve the
performance of such networks. Both semi-distributed and fully
distributed protocols for 802.11-based wireless networks standard
are presented and evaluated. The philosophy of the approach is to
minimize modifications to existing protocols, particularly within
client-side devices. Thus, modifications are primarily made at
the access points (APs). The semi-distributed protocol was fully
implemented within the 802.11 package of ns-3 to evaluate the
approach. Simulation results with two APs, and with either one
client per AP or two clients per AP, show that within 5 seconds
of network operation, our protocol increases the goodput on the
downlink by about
50%, as compared against a standard 802.11n
implementation.
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Date
2013-02
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Text
Resource Subtype
Technical Report