Works Published in 2011
Displaying works 61 - 80 of 334 in total
Sorted by most recent date added to the index first, which may not be the same as publication date order.
2011 conference paper
Interference alignment for the multiple-antenna amplify-and-forward relay interference channel
Conference Record - Asilomar Conference on Signals, Systems and Computers, 1288–1292.
Contributors: K. Truong * & R. Heath Jr.
TL;DR:
A relay-aided interference alignment algorithm for the multiple-antenna amplify-and-forward relay interference channel that relies on a connection between mean square error and achievable rate to solve the end-to-end sum-rate maximization problem.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2011 conference paper
Grassmannian differential limited feedback for interference alignment
European Signal Processing Conference, 1075–1079. http://www.scopus.com/inward/record.url?eid=2-s2.0-84863759064&partnerID=MN8TOARS
Contributors: O. El Ayach & R. Heath Jr.
Source: ORCID
Added: September 11, 2020
2011 conference paper
Extending the reach of GPS-assisted femtocell synchronization and localization through Tightly-Coupled Opportunistic Navigation
2011 IEEE GLOBECOM Workshops, GC Wkshps 2011, 242–247.
Contributors: K. Pesyna*, K. Wesson*, R. Heath Jr. & T. Humphreys *
TL;DR:
The results of this paper suggest that a TCON solution fusing GPS with CDMA cellular signals offers significant sensitivity gains over state-of-the-art assisted-GPS receivers, allowing GPS-synchronized femtocells to be deployed in 90% of all residences.
(via Semantic Scholar)
hdl.handle.net (repository)
Source: ORCID
Added: September 11, 2020
2011 journal article
Improved iterative coordinated beamforming based on singular value decomposition for multiuser mimo systems with limited feedforward
Journal of Applied Research and Technology, 9(3), 342–354. http://www.scopus.com/inward/record.url?eid=2-s2.0-84860827655&partnerID=MN8TOARS
Contributors: L. Soriano-Equigua, J. Sánchez-García, C. Chae & R. Heath Jr.
Source: ORCID
Added: September 11, 2020
2011 journal article
Distributed link adaptation for multicast traffic in MIMO-OFDM systems
Physical Communication, 4(4), 286–295.
Contributors: S. Yun*, C. Caramanis* & R. Heath*
TL;DR:
A machine learning based distributed algorithm for link adaptation for multicast traffic in multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) systems is proposed and computations show that the data driven approach provides good prediction of the optimal modulation and coding scheme (MCS) outperforming the fixed MCS policies collectively.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2011 journal article
Cooperative algorithms for MIMO interference channels
IEEE Transactions on Vehicular Technology, 60(1), 206–218.
Contributors: S. Peters* & R. Heath Jr.
author keywords: Cooperative systems; distributed algorithms; interference channels; multiple-input-multiple-output (MIMO); wireless communication
TL;DR:
It is found that a network with cochannel interference can benefit from employing precoders that are designed to consider that interference, but in extreme cases, such as when only one receiver has a large amount of interference, ignoring that the co channel interference is advantageous.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2011 journal article
Decentralized precoding for multicell MIMO downlink
IEEE Transactions on Wireless Communications, 10(6), 1798–1809.
author keywords: Multicell; network MIMO; interference mitigation; decentralized precoder; inter-cell interference; dirty paper coding; CSI uncertainty
TL;DR:
This paper proposes distributed precoding techniques for the multicell MIMO downlink that are both decentralized with respect to the BSs as well as capable of enabling multiple users to share the same frequency carrier spatially within each cell.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2011 journal article
Cognitive cooperation for the downlink of frequency reuse small cells
Eurasip Journal on Advances in Signal Processing, 2011.
Contributors: M. Zwingelstein-Colin*, S. Akoum*, R. Heath* & M. Debbah *
TL;DR:
A cooperative diversity protocol coded over space, time, and frequency to achieve improved quality of service for mobile users in the downlink of small-cell frequency reuse networks and yields considerable improvement over direct transmission frequency reuse strategies.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2011 journal article
Adaptive limited feedback for sum-rate maximizing beamforming in cooperative multicell systems
IEEE Transactions on Signal Processing, 59(2), 800–811.
Contributors: R. Bhagavatula* & R. Heath Jr.
author keywords: Base station cooperation; feedback-bit partitioning; limited feedback
TL;DR:
A new limited feedback strategy is proposed for multicell beamforming where cooperation is restricted to sharing only the CSI of active users among base stations, and a new feedback-bit allocation strategy, to partition the available bits between the desired and interfering channels, is developed.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2011 book
Digital Communication Basics
In Handbook of Computer Networks (Vol. 1, pp. 627–641).
Contributors: R. Heath* & A. Salvekar*
Source: ORCID
Added: September 11, 2020
2011 journal article
Adaptive bit partitioning for multicell intercell interference nulling with delayed limited feedback
IEEE Transactions on Signal Processing, 59(8), 3824–3836.
Contributors: R. Bhagavatula & R. Heath Jr.
author keywords: Adaptive feedback-bit partitioning; limited CSI feedback; multicell cooperation
TL;DR:
A new feedback- bit allocation strategy is proposed, as a function of the delays in the communication links and received signal strengths in the downlink, which yields higher sum-rates than the equal-bit allocation technique.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2011 conference paper
A machine learning approach to link adaptation for SC-FDE system
GLOBECOM - IEEE Global Telecommunications Conference.
Contributors: Z. Puljiz*, M. Park* & R. Heath Jr.
TL;DR:
A machine learning-based approach for link adaptation in bit interleaved convolutionally encoded SC-FDE systems is proposed, which reduces the feature space dimensionality consisting of the channel coefficients, noise variance, and post-processing SNR to improve performance in the presence of channel uncertainty.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2011 conference paper
Adaptive policies for real-time video transmission: A Markov decision process framework
Proceedings - International Conference on Image Processing, ICIP, 2249–2252.
Contributors: C. Chen *, R. Heath Jr., A. Bovik * & G. De Veciana *
TL;DR:
It is proved that, under certain assumptions, adaptive video scheduling can be reduced to a Markov decision process over a finite state space and the scheduling policy can be optimized via standard stochastic control techniques using aMarkov decision formulation.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2011 journal article
An iterative interference cancellation method for co-channel multicarrier and narrowband systems
Physical Communication, 4(1), 13–25.
author keywords: CDMA; Co-channel interference; Femtocell; NBI; OFDMA; Successive interference cancellation
TL;DR:
Through computer simulations, it is shown that the proposed CCI cancellation method has lower complexity compared to joint demodulation, and it yields significant gains in the symbol error rate (SER) performance of both the NB and multicarrier systems.
(via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: September 11, 2020
2011 journal article
Measurements of generation-recombination effect by low-frequency phase-noise technique in AlGaN/GaN MOSHFETs
Physica Status Solidi (c), 8(5), 1539–1543.
author keywords: low-frequency noise; GaN MOSHFET; generation-recombination; gate dielectric
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Crossref, NC State University Libraries
Added: September 6, 2020
2011 journal article
Unstable periodic orbits and noise in chaos computing
Chaos: An Interdisciplinary Journal of Nonlinear Science, 21(4), 047520.
MeSH headings : Computer Simulation; Models, Statistical; Nonlinear Dynamics
Source: Crossref
Added: August 28, 2020
2011 journal article
Logical stochastic resonance with correlated internal and external noises in a synthetic biological logic block
Chaos: An Interdisciplinary Journal of Nonlinear Science, 21(4), 047521.
MeSH headings : Bacteriophage lambda / genetics; Computer Simulation; Gene Expression Regulation, Viral / genetics; Logistic Models; Models, Biological; Nonlinear Dynamics; Signal Transduction / genetics; Stochastic Processes; Viral Proteins / genetics
TL;DR:
The intriguing results of this study show that it is possible to build a biological logic block that can emulate or switch from the AND to the OR gate functionalities through externally tuning the system parameters, and are underpinned by the presence of an optimal amount of random fluctuations.
(via Semantic Scholar)
Source: Crossref
Added: August 28, 2020
2011 chapter
Chaos for Speech Coding and Production
In Advances in Nonlinear Speech Processing (pp. 270–278).
TL;DR:
The presence of nonlinearity and chaotic behavior in the human speech production system has been reported previously, but chaotic dynamics has not been widely exploited in speech coding and artificial speech production algorithms.
(via Semantic Scholar)
Source: Crossref
Added: August 28, 2020
2011 journal article
Dielectric response functions of the (0001¯), (101¯3) GaN single crystalline and disordered surfaces studied by reflection electron energy loss spectroscopy
Journal of Applied Physics, 110(4), 043507.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: Crossref
Added: August 28, 2020
2011 journal article
Radial space-charge-limited electron flow in semi-insulating GaN:Fe
Journal of Applied Physics, 110(1), 013723.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: Crossref
Added: August 28, 2020
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