Works Published in 2007
Displaying works 21 - 40 of 294 in total
Sorted by most recent date added to the index first, which may not be the same as publication date order.
2007 conference paper
Harsh Environment Thermal Management Using Aluminum-Based Packaging
Presented at the International Electronics Packaging Symposium, Niskayuna, NY.
Event: International Electronics Packaging Symposium at Niskayuna, NY on July 31 - August 1, 2007
Source: NC State University Libraries
Added: October 23, 2021
2007 chapter
Packaging and Smart Power Systems
In M. H. Rashid (Ed.), Power Electronics Handbook (2nd ed., pp. 1147–1158).
Ed(s): M. Rashid
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Crossref, NC State University Libraries
Added: September 5, 2021
2007 report
Efficient support for speculative tasking
Source: ORCID
Added: August 18, 2021
2007 journal article
A review on multiple access interference cancellation and avoidance for IR-UWB
Signal Processing, 87(4), 623–653.
author keywords: multiuser interference cancellation; ML; MMSE; review; tutorial; ultrawideband
TL;DR:
A comprehensive review of multiple access interference (MAI) avoidance/cancellation for impulse radio (IR) ultrawideband (UWB) systems is presented, to outline analogies and differences between IR-UWB and DS-CDMA approaches to handle the MAI, and to identify possible research directions.
(via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: August 13, 2021
2007 article
P4M-7 Front-End IC Design for 2D cMUT Arrays: Modeling and Experimental Verification
Yamaner, F. Y., & Bozkurt, A. (2007, October). 2007 IEEE Ultrasonics Symposium Proceedings.
Source: ORCID
Added: September 26, 2020
2007 article
P4M-6 A Low Noise Capacitive Feedback Analog Front-End for CMUTs in Intra Vascular Ultrasound Imaging
Cenkeramaddi, L. R., Bozkurt, A., Yamaner, F. Y., & Ytterdal, T. (2007, October). 2007 IEEE Ultrasonics Symposium Proceedings.
author keywords: CMUT; CMUT sensing circuit; CMUT analog front-end; CMUT-CMOS; low-noise; ultrasound front end; high voltage ultrasound pulser; IVUS imaging; capacitive feedback analog front-end
TL;DR:
The proposed capacitive feedback analog front-end for intra vascular ultrasound (IVUS) imaging as opposed to the conventional resistive feedback Analog front-ends was able to achieve an overall noise figure of less than 2 dB.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 26, 2020
2007 conference paper
Welcome message from the technical program co-chairs
IEEE Vehicular Technology Conference.
Contributors: R. Heath* & G. Bottomley*
Source: ORCID
Added: September 11, 2020
2007 journal article
Uplink power control in multi-cell spatial multiplexing wireless systems
IEEE Transactions on Wireless Communications, 6(7), 2700–2711.
Contributors: R. Chen*, J. Andrews *, R. Heath Jr. & A. Ghosh *
author keywords: MIMO systems; power control
TL;DR:
Numerical results show that power control, compared to supposedly optimal waterfilling strategies, actually achieves higher throughput at the low SINRs typical in cellular systems, with significantly lower overhead and complexity.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2007 journal article
Transmit selection diversity for unitary precoded multiuser spatial multiplexing systems with linear receivers
IEEE Transactions on Signal Processing, 55(3), 1159–1171.
Contributors: R. Chen*, R. Heath Jr. & J. Andrews *
author keywords: diversity methods; multiple-input multiple-output (MIMO) systems; precoding
TL;DR:
Two precoding methods that use extra transmit antennas, beyond the minimum required, to provide additional degrees of diversity and mutual information over single-user multiple-input multiple-output (MIMO) methods and static allocation methods are proposed.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2007 journal article
Sum capacity of multiuser MIMO broadcast channels with block diagonalization
IEEE Transactions on Wireless Communications, 6(6), 2040–2045.
Contributors: Z. Shen *, R. Chen*, J. Andrews *, R. Heath Jr. & B. Evans *
author keywords: MIMO; capacity; multiuser; broadcast channels; precoding; dirty paper coding
TL;DR:
This paper analytically compares BD without receive antenna selection to DPC for a set of given channels and shows that if the user channels are orthogonal to each other, then BD achieves the same sum capacity as DPC; and an upper bound on the ergodic sum capacity gain of DPC over BD is proposed.
(via Semantic Scholar)
citeseerx.ist.psu.edu (repository)
Source: ORCID
Added: September 11, 2020
2007 journal article
Space division multiple access with a sum feedback rate constraint
IEEE Transactions on Signal Processing, 55(7 II), 3879–3891.
Contributors: K. Huang *, R. Heath Jr. & J. Andrews *
author keywords: broadcast channels; feedback communication; multiuser channels; space division multiplexing
TL;DR:
Numerical results show that the proposed SDMA design is capable of attaining higher sum capacities than existing ones, even though the sum feedback rate is bounded, and is shown to achieve a sum capacity growth rate close to the optimal one.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2007 journal article
Systematic codebook designs for quantized beamforming in correlated MIMO channels
IEEE Journal on Selected Areas in Communications, 25(7), 1298–1310.
Contributors: V. Raghavan, R. Heath Jr. & A. Sayeed
author keywords: diversity methods; fading channels; Grassmannian line packing; limited feedback; MIMO systems; quantization
TL;DR:
This paper proposes a universal codebook design for correlated channels when channel statistical information is known at the transmitter that is robust to channel statistics and is implemented by maps that can rotate and scale spherical caps on the Grassmannian manifold.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2007 journal article
Simplified spatial correlation models for clustered MIMO channels with different array configurations
IEEE Transactions on Vehicular Technology, 56(4 II), 1924–1934.
Contributors: A. Forenza, D. Love * & R. Heath Jr.
author keywords: channel capacity; circular arrays; correlation; linear arrays; multipath channels; multiple-input multiple-output (MIMO) systems
TL;DR:
An approximate spatial correlation model for clustered multiple-input multiple-output (MIMO) channels is proposed and used to show that the proposed model is a good fit to the existing parametric models for low angle spreads (i.e., smaller than 10deg).
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2007 conference paper
SDMA with a sum feedback rate constraint
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 3.
Contributors: K. Huang *, R. Heath Jr. & J. Andrews *
TL;DR:
Numerical results show that the proposed SDMA design is capable of attaining higher sum capacities than existing ones, even though the sum feedback rate is bounded, and to achieve a sum capacity growth rate close to the optimal one.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2007 journal article
Smart antennas for next generation wireless systems
Eurasip Journal on Wireless Communications and Networking, 2007.
Contributors: A. Alexiou, M. Navarro * & R. Heath Jr.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2007 journal article
Shifting the MIMO Paradigm
IEEE Signal Processing Magazine, 24(5), 36–46.
Contributors: D. Gesbert*, M. Kountouris *, R. Heath Jr., C. Chae * & T. Sälzer*
TL;DR:
Multi-user MIMO (MU-MIMO) networks reveal the unique opportunities arising from a joint optimization of antenna combining techniques with resource allocation protocols, and brings robustness with respect to multipath richness, yielding the diversity and multiplexing gains without the need for multiple antenna user terminals.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2007 conference paper
Reduced rank signaling in spatially correlated MIMO channels
IEEE International Symposium on Information Theory - Proceedings, 1081–1085.
Contributors: V. Raghavan*, V. Veeravalli * & R. Heath Jr.
TL;DR:
This work quantifies the impact of spatial correlation on the M-th transition-SNR, defined as the smallest SNR at which rank-M transmission becomes optimal, and studies communication with a low-complexity family of input covariance matrices that are characterized by their rank, assuming uniform power allocation over the smaller-dimensional eigen-space.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2007 conference paper
Throughput scaling of uplink SDMA with limited feedback
Conference Record - Asilomar Conference on Signals, Systems and Computers, 292–296.
Contributors: K. Huang *, J. Andrews * & R. Heath Jr.
TL;DR:
The results provide guidelines for designing uplink SDMA to achieve optimum throughput scaling and suggest that in the high SNR regime, scheduling should select users with small CSI quantization error.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2007 journal article
Reduced complexity signal detection for OFDM systems with transmit diversity
Journal of Communications and Networks, 9(1), 75–82. http://www.scopus.com/inward/record.url?eid=2-s2.0-34247103991&partnerID=MN8TOARS
Contributors: J. Kim, R. Heath Jr. & E. Powers
Source: ORCID
Added: September 11, 2020
2007 journal article
Quantization on the Grassmann manifold
IEEE Transactions on Signal Processing, 55(8), 4208–4216.
Contributors: B. Mondal*, S. Dutta* & R. Heath Jr.
author keywords: array signal processing; MIMO systems; quantization; rate distortion theory
TL;DR:
Gersho's asymptotic (large rate, small distortion) distortion bounds are extended to the case when the source is distributed on the complex Grassmann manifold.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
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