Works Published in 2015
Displaying works 61 - 80 of 479 in total
Sorted by most recent date added to the index first, which may not be the same as publication date order.
2015 journal article
Space-Time Physical-Layer Network Coding
IEEE Journal on Selected Areas in Communications, 33(2), 323–336.
author keywords: Physical-layer network coding; space-time precoding; multi-way relay channels
TL;DR:
A space-time physical-layer network coding method is presented for information exchange among multiple users over fully connected multiway relay networks and it is shown that ST-PNC improves the sum of degrees of freedom (sum-DoF) of the network compared to existing interference management methods.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2015 journal article
Power control for D2D underlaid cellular networks: Modeling, algorithms, and analysis
IEEE Journal on Selected Areas in Communications, 33(1), 1–13.
Contributors: N. Lee *, X. Lin *, J. Andrews * & R. Heath*
author keywords: Power control; device-to-device communication; cellular networks; Poisson point process; stochastic geometry
arxiv.org (repository)
Source: ORCID
Added: September 11, 2020
2015 journal article
The interplay between massive MIMO and underlaid D2D networking
IEEE Transactions on Wireless Communications, 14(6), 3337–3351.
Contributors: X. Lin *, R. Heath* & J. Andrews *
author keywords: Massive MIMO; device-to-device; cellular networks; spectral efficiency; stochastic geometry
TL;DR:
This paper investigates cellular and D2D spectral efficiencies under both perfect and imperfect channel state information (CSI) at the receivers that employ partial zero-forcing, and derives simple analytical lower bounds for both the cellular and underlaid D1D spectral efficiency.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 journal article
Rate adaptation and admission control for video transmission with subjective quality constraints
IEEE Journal on Selected Topics in Signal Processing, 9(1), 22–36.
Contributors: C. Chen *, X. Zhu *, G. De Veciana *, A. Bovik * & R. Heath*
author keywords: Quality of experience; video transport; rate adaptation; admission control; wireless networks
TL;DR:
This work shows how the QoE of video users can be improved by rate adaptation and admission control, and proposes a threshold-based admission control policy to block users whose empirical cumulative quality distribution is not likely to satisfy their QOE constraint.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Performance evaluation of ITLinQ and FlashLinQ for overlaid device-to-device communication
2015 IEEE International Conference on Communication Workshop, ICCW 2015, 596–601.
Contributors: R. Mungara*, X. Zhang *, A. Lozano * & R. Heath*
TL;DR:
A performance evaluation of ITLinQ and FlashLinQ, the two most popular schemes proposed to date to channelize D2D transmissions, are found to exercise similar mechanisms to avoid situations of excessive interference, yielding substantial improvements with respect to unchannelized networks.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Performance analysis of pair-wise dynamic multi-user joint transmission
IEEE International Conference on Communications, 2015-September, 3981–3986.
TL;DR:
The key finding is that the pair-wise dynamic BS cooperation through MU-JT provides a better rate coverage performance than that of single-user joint transmission (SU-T) over the entire range of the rate threshold when each user is close enough to the associated BS.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 journal article
Performance Analysis of Cooperative Wireless Networks with Unreliable Backhaul Links
IEEE Communications Letters, 19(8), 1386–1389.
author keywords: Cooperative wireless networks; backhaul; Bernoulli-weighted exponential
TL;DR:
A general expression is derived for the complementary cumulative distribution function of a sum of K independent random variables, where each random variable is a product of an exponential and a Bernoulli random variable, and applied to find a simple closed-form expression that characterizes the system outage performance as a function of network parameters and node geometry.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Optimizing the target error rate for link adaptation
2015 IEEE Global Communications Conference, GLOBECOM 2015.
TL;DR:
This paper derives a closed form expression for the optimal target block error rate (BLER) that maximizes the throughput with hybrid automatic repeat request (HARQ) and shows that the optimal BLER target is inversely proportional to the SINR.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Near maximum-likelihood detector with one-bit ADCs for multiuser massive MIMO systems
2015 IEEE 6th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMSAP 2015, 397–400.
TL;DR:
Simulation results show that the proposed nML detector can simultaneously support multiple users using higher-order constellations, e.g., 16 quadrature amplitude modulation, and performs much better than a simple zeroforcing (ZF)-type detector.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
MmWave ad hoc network coverage and capacity
IEEE International Conference on Communications, 2015-September, 1310–1315.
Contributors: A. Thornburg*, T. Bai* & R. Heath*
TL;DR:
A stochastic geometry approach is used to characterize the coverage probability of a mmWave ad hoc network with directional antennas and random building blockages and shows that mmWave networks support larger densities, higher area spectral efficiencies, and better rate coverage compared to traditional, lower-frequency ad hoc networks.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
On the spatial spectral efficiency of ITLinQ
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2015-April, 1806–1810.
Contributors: R. Mungara*, X. Zhang *, A. Lozano * & R. Heath*
TL;DR:
This paper analytically characterizes the spectral efficiency of the ITLinQ channelization technique and relies on a stochastic geometry formulation, which enables obtaining compact expressions while opening the door to an optimization of IT LinQ's parameters.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Multi-layer precoding for full-dimensional massive MIMO systems
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2015-April, 815–819.
Contributors: A. Alkhateeb *, G. Leus * & R. Heath*
TL;DR:
Simulation results show the potential gains of multi-layer precoding compared with traditional pilot-contaminated massive MIMO setups despite the low channel knowledge requirements and the low-complexity implementation.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 journal article
Loss Visibility Optimized Real-Time Video Transmission over MIMO Systems
IEEE Transactions on Multimedia, 17(10), 1802–1817.
Contributors: A. Abdel Khalek*, C. Caramanis* & R. Heath*
author keywords: Limited feedback; loss visibility; multiple-input multiple-output (MIMO); packet loss; unequal error protection; video signal processing
TL;DR:
This paper introduces an architecture for real-time video transmission over multiple-input multiple-output (MIMO) wireless communication systems using loss visibility side information and shows that the solution enables jointly reaping gains in terms of improved video quality and lower latency.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Millimeter wave power transfer and information transmission
2015 IEEE Global Communications Conference, GLOBECOM 2015.
Contributors: L. Wang *, M. Elkashlan *, R. Heath* , M. Di Renzo * & K. Wong*
TL;DR:
This paper considers users with large energy storage that are recharged by the mmWave base stations prior to uplink information transmission, and analyzes the average harvested energy and average achievable rate to show that when increasing the base station density, a transition from a noise- limited regime to an interference-limited regime is observed.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Low complexity hybrid sparse precoding and combining in millimeter wave MIMO systems
IEEE International Conference on Communications, 2015-September, 1340–1345.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2015 journal article
Limited Feedback Hybrid Precoding for Multi-User Millimeter Wave Systems
IEEE Transactions on Wireless Communications, 14(11), 6481–6494.
Contributors: A. Alkhateeb *, G. Leus * & R. Heath*
author keywords: Millimeter wave communication; multi-user hybrid precoding; limited-feedback
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2015 journal article
Metrocell antennas: The positive impact of a narrow vertical beamwidth and electrical downtilt
IEEE Vehicular Technology Magazine, 10(3), 51–59.
Contributors: X. Li, R. Heath* , K. Linehan* & R. Butler*
TL;DR:
It is demonstrated that the network spectral efficiency and average user through-put both increase as the vertical beamwidth decreases and downtilt is applied to metrocell transmission, and the network becomes more energy efficient.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Interference statistics in a random mmWave ad hoc network
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2015-August, 2904–2908.
Contributors: A. Thornburg*, T. Bai* & R. Heath*
TL;DR:
A derivation of the instantaneous interference-to-noise ratio (INR) distribution of a mmWave ad hoc network is presented and it is shown that with a reasonable choice of system parameters, the interference is nearly always stronger than the noise power in dense networks.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Interference in finite-sized highly dense millimeter wave networks
2015 Information Theory and Applications Workshop, ITA 2015 - Conference Proceedings, 175–180.
Contributors: K. Venugopal *, M. Valenti* & R. Heath*
TL;DR:
The paper considers the effect of blockages, which are primarily caused by the human bodies present in the operating environment, and develops expressions for coverage and rate, which capture the effects of key antenna characteristics such as directivity and gain.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Frequency selective hybrid precoding in millimeter wave OFDMA systems
2015 IEEE Global Communications Conference, GLOBECOM 2015.
TL;DR:
This paper proposes an algorithm to jointly optimize the wideband analog beamformers and the per- subcarrier digital precoders and shows that the optimized approach achieves good performance in terms of beamforming gain.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
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