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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Secure On-Off Transmission in mmWave Systems With Randomly Distributed Eavesdroppers
TL;DR: The numerical and analysis results show that the secure on-off schemes can effectively improve the secrecy performance of mmWave systems, and blocking is beneficial for improving secrecy performance significantly.
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Poster: A millimeter wave software defined radio platform with phased arrays
TL;DR: MiRa is built: a full-fledged mmWave radio with phased arrays capable of beam steering, and operates as a daughterboard for the USRP software radio which enables easy manipulation of mmWave signals using standard GNU-radio software.
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ON–OFF Analog Beamforming for Massive MIMO
TL;DR: In this paper, the authors investigated a new analog beamforming architecture for massive MIMO systems, where each of the multiple transmit antennas is switched to be on or off to form a beam according to the channel state information at transmitters.
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Millimeter Wave Ad Hoc Networks: Noise-Limited or Interference-Limited?
TL;DR: It is concluded that a new framework of adaptive hybrid resource allocation procedure, containing a proactive contention-based phase followed by a reactive contention-free one with dynamic phase duration is necessary to cope with such transitional behavior of mmWave networks.
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TL;DR: The gains in multiuser systems are even more impressive, because such systems offer the possibility to transmit simultaneously to several users and the flexibility to select what users to schedule for reception at any given point in time.
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