Millimeter-Wave Cellular Wireless Networks: Potentials and Challenges
Sundeep Rangan,Theodore S. Rappaport,Elza Erkip +2 more
- Vol. 102, Iss: 3, pp 366-385
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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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Proceedings ArticleDOI
Millimeter Wave Location-Based Beamforming using Compressive Sensing
TL;DR: In this paper, a location based analog beamforming (BF) technique using compressive sensing (CS) to be feasible for millimeter wave (mmWave) wireless communication systems is proposed.
Proceedings ArticleDOI
Handover performance in 5G HetNets with millimeter wave cells
TL;DR: The impact of the distance between the overlaid macro BSs and the mmWave small BSs with directional antenna configurations on the HO performance is studied and closed-form expressions of the probabilities of HO, no HO and HO failure are derived.
Proceedings ArticleDOI
Machine Learning on Camera Images for Fast mmWave Beamforming
Batool Salehi,Mauro Belgiovine,Sara Garcia Sanchez,Jennifer G. Dy,Stratis Ioannidis,Kaushik R. Chowdhury +5 more
TL;DR: In this paper, a machine learning approach with two sequential convolutional neural networks (CNNs) is proposed to identify the locations of the transmitter and receiver nodes, and then return the optimal beam pair.
Proceedings ArticleDOI
Hybrid precoding for multi-user mmWave systems based on MMSE criterion
Jiaqi Cong,Xianchi Li,Yu Zhu +2 more
TL;DR: Investigation of the hybrid precoding for multi-user communication in a downlink mmWave system, aiming at minimizing the sum of the users' mean square errors (sum-MSE) with the constraints of maximum transmit power and constant modulus for the phase shifters in the radio frequency precoding block shows results that perform closely to the fully digital precoding scheme.
Journal ArticleDOI
Exploiting Site-Specific Propagation Characteristics in Directional Search at 28 GHz
Juan C. Aviles,Ammar B. Kouki +1 more
TL;DR: A simple ray tracing method is proposed to approximately identify the most effective BS angles that avoid power emissions in directions largely blocked by nearby buildings, and the results indicate that prior site-specific information may be helpful, particularly for systems using analog beamforming.
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