Huacheng Zeng

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Interference alignment (IA) is a powerful technique to handle interference in wireless networks. Since its inception, IA has become a central research theme in the wireless communications community. Due to its intrinsic nature of being a physical layer technique, IA has been mainly studied for point-to-point or single-hop scenario. There is a lack of(More)
Degree-of-Freedom (DoF)-based model is a simple yet powerful tool to analyze MIMO’s spatial multiplexing (SM) and interference cancellation (IC) capabilities in a multi-hop network. Recently, a new DoF model was proposed and was shown to achieve the same rate region as the matrix-based model (under SM and IC). The essence of this new DoF model is a novel(More)
A fundamental issue of underwater acoustic (UWA) communications is large propagation delays due to water medium. A new direction to address this issue is to take advantage of large propagation delays rather than enduring them as a disadvantage. Recent advances in time-based interference alignment (IA), or propagation delay (PD)-based IA, offer a new(More)
Interference alignment (IA) is a major advance in information theory. Despite its rapid advance in the information theory community, most results on IA remain point-to-point or single-hop and there is a lack of advance of IA in the context of multi-hop wireless networks. The goal of this paper is to make a concrete step toward advancing IA technique in(More)
Reactive jamming is considered the most powerful jamming attack as the attack efficiency is maximized while the risk of being detected is minimized. Currently, there are no effective anti-jamming solutions to secure OFDM wireless communications under reactive jamming attack. On the other hand, MIMO has emerged as a technology of great research interest in(More)
The rapid advances of MIMO to date have mainly stayed at the physical layer or single-hop communications. Such advantages have not been fully realized at the network level, particularly for multi-hop networks. This is mainly due to the lack of a tractable and accurate model that can characterize MIMO's powerful capabilities such as spatial multiplexing (SM)(More)
IA has been widely regarded as a promising technique to handle mutual interference in wireless networks. Although there have been many studies on IA, most of the results are limited to the single-hop scenario. To date, research on IA in the networking community remains scarce. This stagnation underscores both the technical barrier in this area and the(More)
Recently, a new MIMO degree-of-freedom (DoF) model was proposed to allocate DoF resources for spatial multiplexing (SM) and interference cancellation (IC) in a multi-hop network. Although this DoF model promises many benefits, it hinges upon a global node ordering to keep track of IC responsibilities among all the nodes. An open question about this model is(More)
Jamming attack is a serious threat to the wireless communications. Reactive jamming maximizes the attack efficiency by jamming only when the targets are communicating, which can be readily implemented using software-defined radios. In this paper, we explore the use of the multi-input multi-output (MIMO) technology to achieve jamming resilient orthogonal(More)