Millimeter-Wave Cellular Wireless Networks: Potentials and Challenges
Sundeep Rangan,Theodore S. Rappaport,Elza Erkip +2 more
- Vol. 102, Iss: 3, pp 366-385
TLDR
Measurements and capacity studies are surveyed to assess mmW technology with a focus on small cell deployments in urban environments and it is shown that mmW systems can offer more than an order of magnitude increase in capacity over current state-of-the-art 4G cellular networks at current cell densities.Abstract:
Millimeter-wave (mmW) frequencies between 30 and 300 GHz are a new frontier for cellular communication that offers the promise of orders of magnitude greater bandwidths combined with further gains via beamforming and spatial multiplexing from multielement antenna arrays. This paper surveys measurements and capacity studies to assess this technology with a focus on small cell deployments in urban environments. The conclusions are extremely encouraging; measurements in New York City at 28 and 73 GHz demonstrate that, even in an urban canyon environment, significant non-line-of-sight (NLOS) outdoor, street-level coverage is possible up to approximately 200 m from a potential low-power microcell or picocell base station. In addition, based on statistical channel models from these measurements, it is shown that mmW systems can offer more than an order of magnitude increase in capacity over current state-of-the-art 4G cellular networks at current cell densities. Cellular systems, however, will need to be significantly redesigned to fully achieve these gains. Specifically, the requirement of highly directional and adaptive transmissions, directional isolation between links, and significant possibilities of outage have strong implications on multiple access, channel structure, synchronization, and receiver design. To address these challenges, the paper discusses how various technologies including adaptive beamforming, multihop relaying, heterogeneous network architectures, and carrier aggregation can be leveraged in the mmW context.read more
Citations
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Unified Stochastic Geometry Modeling and Analysis of Cellular Networks in LOS/NLOS and Shadowed Fading
TL;DR: By exploiting the moment generating function of the SINR, this paper succeeds in analytically assessing cellular networks performance over the shadowed channel models, including Rayleigh, Nakagami-, Rician, and Rician shadow fading distributions.
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UAV Beam Alignment for Highly Mobile Millimeter Wave Communications
Weizheng Zhang,Wei Zhang,Jun Wu +2 more
TL;DR: This paper considers a UAV mmWave system, where the UAV serves as a BS to cover mobile users on the ground, and proposes efficient beam tracking methods to predict the beam direction with user mobility.
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User Association for Millimeter-Wave Networks: A Machine Learning Approach
TL;DR: A novel machine learning based user association approach to support multi-connectivity in mmWave networks is developed and can achieve a good performance with only a few training samples and without the need of CSI.
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User-Centric Visible Light Communications for Energy-Efficient Scalable Video Streaming
TL;DR: This work proposes a three-tier dynamic-programming-based algorithm for user/layer-level adaptive modulation mode assignment, for access-point-level power allocation and for cluster-level energy efficiency optimization, respectively, and demonstrates the superior performance of the authors' UC clusters compared to the conventional cell design.
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Directional Discontinuous Reception (DDRX) for mmWave Enabled 5G Communications
TL;DR: New Directional-Discontinuous Reception (DDRX) for directional air interface expected in mmWave enabled 5G communications is introduced and three new DDRX mechanisms are proposed to limit the impediments on power saving.
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