Tor A. Ramstad

93 papers B 11C 4Misc 16Journal 24Unranked 38
YearRankTypeTitle / Venue / Authors
2024 J jnl
Shannon-Kotel'nikov Mappings for Analog Point-to-Point Communications.
IEEE Trans. Inf. Theory
Pål Anders Floor, Tor A. Ramstad
2019 J jnl
Communication Aspects for a Measurement Based UWB in-Body to on-Body Channel.
IEEE Access
Pål Anders Floor, Raúl Chávez-Santiago, Anna N. Kim, Kimmo Kansanen, Tor A. Ramstad, Ilangko Balasingham
2016 B conf
Layered source-channel coding for uniformly distributed sources over parallel fading channels.
PIMRC
Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham
2015 J jnl
In-Body to On-Body Ultrawideband Propagation Model Derived From Measurements in Living Animals.
IEEE J. Biomed. Health Informatics
Pål Anders Floor, Raúl Chávez-Santiago, Sverre Brovoll, Øyvind Aardal, Jacob Bergsland, Ole-Johannes H. N. Grymyr, Per Steinar Halvorsen, Rafael Palomar, Dirk Plettemeier, Svein-Erik Hamran, Tor A. Ramstad, Ilangko Balasingham
2015 J jnl
On Joint Source-Channel Coding for a Multivariate Gaussian on a Gaussian MAC.
IEEE Trans. Commun.
Pål Anders Floor, Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham, Niklas Wernersson, Mikael Skoglund
2014 J jnl
On Zero-Delay Source-Channel Coding.
IEEE Trans. Inf. Theory
Emrah Akyol, Kumar Viswanatha, Kenneth Rose, Tor A. Ramstad
2014 J jnl
On change detection in a Kalman filter based tracking problem.
Signal Process.
Babak Moussakhani, John T. Flåm, Tor A. Ramstad, Ilangko Balasingham
2014 J jnl
Zero-Delay Joint Source-Channel Coding for a Multivariate Gaussian on a Gaussian MAC.
CoRR
Pål Anders Floor, Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham, Niklas Wernersson, Mikael Skoglund
2013 J jnl
On Zero Delay Source-Channel Coding
CoRR
Emrah Akyol, Kumar Viswanatha, Kenneth Rose, Tor A. Ramstad
2013 C conf
On optimal detection for matrix multiplicative data hiding.
IH&MMSec
Babak Moussakhani, Mohammad Ali Sedaghat, John T. Flåm, Tor A. Ramstad
2013 B conf
On zero delay source-channel coding: Functional properties and linearity conditions.
ISIT
Emrah Akyol, Kumar Viswanatha, Kenneth Rose, Tor A. Ramstad
2013 J jnl
Zero Delay Joint Source Channel Coding for Multivariate Gaussian Sources over Orthogonal Gaussian Channels.
Entropy
Pål Anders Floor, Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham
2012 — conf
A Robust Communication System Based on Joint-Source Channel Coding for a Uniform Source.
VTC Fall
Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham
2012 B conf
Coded pulse position modulation communication system over the human abdominal channel for medical wireless body area networks.
PIMRC
Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham
2012 — conf
Communication using ultra wide-band pulse position modulation for in-body sensors.
BODYNETS
Anna N. Kim, Pål Anders Floor, Tor A. Ramstad, Ilangko Balasingham
2012 — conf
Error concealment and post processing for the capsule endoscope.
BODYNETS
Anna N. Kim, Eirik Jenssen Daling, Tor A. Ramstad, Ilangko Balasingham
2012 J jnl
On localisation accuracy inside the human abdomen region.
IET Wirel. Sens. Syst.
Babak Moussakhani, John T. Flåm, Stig Støa, Ilangko Balasingham, Tor A. Ramstad
2012 — conf
On localizing a capsule endoscope using magnetic sensors.
EMBC
Babak Moussakhani, Tor A. Ramstad, John T. Flåm, Ilangko Balasingham
2012 B conf
On transmission of multiple Gaussian sources over a Gaussian MAC using a VQLC mapping.
ITW
Pål Anders Floor, Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham
2012 J jnl
Optimal and robust communication for a uniform source.
IET Commun.
Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham
2012 — conf
Real-time compression of measurements in distribution grids.
SmartGridComm
Reza Parseh, Santiago Sanchez Acevedo, Kimmo Kansanen, Marta Molinas, Tor A. Ramstad
2012 — conf
Sum-rate distortion bound for suboptimal multiterminal source coding applied in medical wireless sensor networks.
BODYNETS
Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham
2012 J jnl
Zero-Delay Joint Source-Channel Coding for a Bivariate Gaussian on a Gaussian MAC.
IEEE Trans. Commun.
Pål Anders Floor, Anna N. Kim, Niklas Wernersson, Tor A. Ramstad, Mikael Skoglund, Ilangko Balasingham
2011 — conf
Delay-Free Joint Source-Channel Coding for Gaussian Network of Multiple Sensors.
ICC
Anna N. Kim, Pål Anders Floor, Tor A. Ramstad, Ilangko Balasingham
2011 — conf
Distributed zero-delay joint source-channel coding for a bi-variate Gaussian on a Gaussian MAC.
EUSIPCO
Pål Anders Floor, Anna N. Kim, Niklas Wernersson, Tor A. Ramstad, Mikael Skoglund, Ilangko Balasingham
2011 J jnl
On Transmission of Two Correlated Gaussian Memoryless Sources over a Gaussian MAC using Delay-Free Mappings
CoRR
Pål Anders Floor, Anna N. Kim, Niklas Wernersson, Tor A. Ramstad, Mikael Skoglund, Ilangko Balasingham
2011 — conf
Transmitting multiple correlated gaussian sources over a Gaussian MAC using delay-free mappings.
ISABEL
Pål Anders Floor, Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham, Niklas Wernersson, Mikael Skoglund
2011 — conf
Very low complexity low rate image coding for the wireless endoscope.
ISABEL
Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham
2011 J jnl
Wireless sensor communication system based on direct-sum source coder.
IET Wirel. Sens. Syst.
Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham
2010 B conf
Bandwidth Expansion in a Simple Gaussian Sensor Network Using Feedback.
DCC
Anna N. Kim, Tor A. Ramstad
2010 — conf
Distributed Signal Estimation Using Binary Sensors with Multiple Thresholds.
VTC Spring
Babak Moussakhani, Ilangko Balasingham, Tor A. Ramstad
2010 — conf
Limited Feedback Transmission Scheme for Wireless Sensor Networks.
ICC
Hieu T. Nguyen, Ilangko Balasingham, Tor A. Ramstad, Pål Anders Floor
2010 B conf
Optimized Analog Mappings for Distributed Source-Channel Coding.
DCC
Emrah Akyol, Kenneth Rose, Tor A. Ramstad
2009 — conf
Minimizing Power Using Large Bandwidth PPM Transmission and DPCM Source Coding.
VTC Spring
Minh-Long Pham, Tor A. Ramstad, Ilangko Balasingham
2009 J jnl
On the Analysis of Shannon-Kotel'nikov Mappings
CoRR
Pål Anders Floor, Tor A. Ramstad
2009 J jnl
Polynomial based analog source-channel codes - [transactions papers].
IEEE Trans. Commun.
Niklas Wernersson, Mikael Skoglund, Tor A. Ramstad
2009 — conf
Poster abstract: Ultra wideband biomedical wireless sensor neworks using wavelet lifting for image transmission.
IPSN
Minh-Long Pham, Tor A. Ramstad, Ilangko Balasingham
2009 J jnl
Shannon-kotel-nikov mappings in joint source-channel coding.
IEEE Trans. Commun.
Fredrik Hekland, Pål Anders Floor, Tor A. Ramstad
2008 J jnl
Are the Wavelet Transforms the Best Filter Banks for Image Compression?
EURASIP J. Image Video Process.
Ilangko Balasingham, Tor A. Ramstad
2007 C conf
Data Throughput Optimization in the IEEE 802.15.4 Medical Sensor Networks.
ISCAS
Stig Støa, Ilangko Balasingham, Tor A. Ramstad
2007 J jnl
Improving the Rate-Distortion Performance of DPCM Using Multirate Processing With Application in Low-Rate Image Coding.
IEEE Trans. Signal Process.
Anna N. Kim, Tor A. Ramstad
2007 — conf
Power Constrained Channel Optimized Vector Quantizers used for Bandwidth Expansion.
ISWCS
Pål Anders Floor, Tor A. Ramstad, Niklas Wernersson
2006 B conf
Digitising the 2: 1 Shannon Mappings for Transport over Heterogeneous Networks.
DCC
Fredrik Hekland, Tor A. Ramstad
2006 B conf
Image Transmission Over Flat Fading Channels Using Joint Source Channel Coding.
DCC
Greg H. Håkonsen, Tor A. Ramstad
2006 — conf
Image Transmission With Adaptive Power and Rate Allocation Over Flat Fading Channels Using Joint Source Channel Coding.
WINSYS
Greg H. Håkonsen, Tor A. Ramstad, Anders Gjendemsjø
2006 — conf
Image Transmission with Adaptive Power and Rate Allocation over Flat Fading Channels Using Joint Source Channel Coding.
ICETE (Selected Papers)
Greg H. Håkonsen, Tor A. Ramstad, Anders Gjendemsjø
2006 B conf
Noise Immunity for 1: N and M: 1 Nonlinear Mappings for Source-Channel Coding.
DCC
Pål Anders Floor, Tor A. Ramstad
2005 — conf
Combined error protection and compression using turbo codes for error resilient image transmission.
ICIP (3)
Anna N. Kim, Stefania Sesia, Tor A. Ramstad, Giuseppe Caire
2005 B conf
Using 2: 1 Shannon Mapping for Joint Source-Channel Coding.
DCC
Fredrik Hekland, Geir E. Øien, Tor A. Ramstad
2004 — conf
Fine-granular scalable and error resilient audio coding by tree-structured quantization.
ICASSP (4)
Stian Johansen, Andrew Perkis, Tor A. Ramstad, Ajit S. Bopardikar
2004 B conf
Practical low bit rate predictive image coder using multi-rate processing and adaptive entropy coding.
ICIP
Anna N. Kim, Tor A. Ramstad
2003 — conf
Improving the rate-distortion performance of DPCM.
ISSPA (1)
Anna N. Kim, Tor A. Ramstad
2002 — conf
Comparing performance of entropy constrained scalar quantizer and other scalar quantizers.
DSP
Anna N. Kim, Tor A. Ramstad
2000 Misc conf
Quantizer optimization in hybrid digital-analog transmission of analog source signals.
ICASSP
Helge Coward, Tor A. Ramstad
1999 — conf
Algorithm for jointly optimized analysis and synthesis FIR filter banks.
ICECS
Are Hjørungnes, Tor A. Ramstad
1999 Misc conf
Filter bank optimization for high-dimensional compression of pre-stack seismic data.
ICASSP
Tage Røsten, Viktor A. Marthinussen, Tor A. Ramstad, Andrew Perkis
1999 — conf
Minimum Mean Square Error Fir Filter Banks with Arbitrary Filter Lengths.
ICIP (1)
Are Hjørungnes, Helge Coward, Tor A. Ramstad
1998 — conf
Fractional rate decimator and interpolator design.
EUSIPCO
Tor A. Ramstad
1998 Misc conf
Jointly optimal analysis and synthesis filter banks for bit constrained source coding.
ICASSP
Are Hjørungnes, Tor A. Ramstad
1998 — conf
Kirchhoff Migration of 2-D Post-Stack Seismic Data after Subband Decomposition.
ICIP (3)
Tage Røsten, Tor A. Ramstad
1998 Misc conf
Lossless image compression using integer coefficient filter banks and class-wise arithmetic coding.
ICASSP
Ilangko Balasingham, John M. Lervik, Tor A. Ramstad
1998 — conf
Performance Evaluation of Different Filter Banks in the JPEG-2000 Baseline System.
ICIP (2)
Ilangko Balasingham, Michael D. Adams, Tor A. Ramstad, Faouzi Kossentini, Helge Coward, Andrew Perkis, Geir E. Øien
1998 J jnl
Synthesis filterbank with low hardware complexity for subband image coding.
IEEE Trans. Image Process.
Ingil Sundsbo, Tor A. Ramstad
1997 Misc conf
Bandwidth compression for continuous amplitude channels based on vector approximation to a continuous subset of the source signal space.
ICASSP
Arild Fuldseth, Tor A. Ramstad
1997 — conf
Channel-optimized subband video coding for channels with a power constraint.
ICIP (3)
Arild Fuldseth, Tor A. Ramstad
1997 — conf
Efficient Coding of the Classification Table in Low Bit Rate Subband Image Coding by Use of Hierarchical Enumeration.
ICIP (2)
Arild Fuldseth, Ilangko Balasingham, Tor A. Ramstad
1997 — conf
On Optimal Tiling of the Spectrum in Subband Image Compression.
ICIP (1)
Ilangko Balasingham, Arild Fuldseth, Tor A. Ramstad
1997 Misc conf
Survey of odd and even length filters in tree-structured filter banks for subband image compression.
ICASSP
Ilangko Balasingham, Tor A. Ramstad, John M. Lervik
1996 — conf
Combined video coding and multilevel modulation.
ICIP (1)
Arild Fuldseth, Tor A. Ramstad
1996 — conf
Low complexity synthesis filter bank for subband coding of images.
EUSIPCO
Ingil Sundsbo, Tor A. Ramstad
1996 Misc conf
Optimality of multiple entropy coder systems for nonstationary sources modelled by a mixture distribution.
ICASSP
John M. Lervik, Tor A. Ramstad
1996 — conf
Optimized perfect reconstruction tree-structured filter banks for image coding.
ICIP (1)
Ilangko Balasingham, Tor A. Ramstad
1996 Misc conf
Subband video coding with smooth motion compensation.
ICASSP
Arild Fuldseth, Tor A. Ramstad
1995 — conf
A new error criterion for block based motion estimation.
ICIP (3)
Arild Fuldseth, Tor A. Ramstad
1995 J jnl
On the optimality of nonunitary filter banks in subband coders.
IEEE Trans. Image Process.
Sven Ole Aase, Tor A. Ramstad
1994 — conf
An analog interpretation of compression for digital communication systems.
ICASSP (5)
John M. Lervik, Tor A. Ramstad
1994 — conf
Fast algorithms for interpolation and decimation filter banks.
ICASSP (3)
Ryszard Stasinski, Tor A. Ramstad
1994 — conf
Optimal Entropy Coding in Image Subband Coders.
ICIP (2)
John M. Lervik, Tor A. Ramstad
1993 — conf
Attractor image compression with a fast non-iterative decoding algorithm.
ICASSP (5)
Skjalg Lepsøy, Geir Egil Øien, Tor A. Ramstad
1993 — conf
Parallel FIR filter banks for robust subband image coding.
ICASSP (5)
Sven Ole Aase, Tor A. Ramstad
1993 J jnl
Ringing reduction in low bit-rate image subband coding using projection onto a space of paraboloids.
Signal Process. Image Commun.
Sven Ole Aase, Tor A. Ramstad
1991 Misc conf
An inner product space approach to image coding by contractive transformations.
ICASSP
Geir E. Øien, Skjalg Lepsøy, Tor A. Ramstad
1991 Misc conf
Cosine-modulated analysis-synthesis filterbank with critical sampling and perfect reconstruction.
ICASSP
Tor A. Ramstad, Joar P. Tanem
1991 J jnl
Performance study of stochastic speech coders.
Speech Commun.
Bernt Ribbum, Andrew Perkis, Kuldip K. Paliwal, Tor A. Ramstad
1990 C conf
Image subband coding using an efficient recursive filter bank with complex signals.
VCIP
Hakon Gronning, John Håkon Husøy, Tor A. Ramstad
1990 C conf
Subband coding of video employing efficient recursive filter banks and advanced motion compensation.
VCIP
John Håkon Husøy, Hakon Gronning, Tor A. Ramstad
1986 Misc conf
Considerations on quantization and dynamic bit-allocation in subband coders.
ICASSP
Tor A. Ramstad
1986 Misc conf
Variable rate coding for speech storage.
ICASSP
Lars M. Lundheim, Tor A. Ramstad
1984 Misc conf
Fully vector-quantized subband coding with adaptive codebook allocation.
ICASSP
Allen Gersho, Tor A. Ramstad, I. Versvik
1982 J jnl
Digital Two-Rate IIR and Hybrid IIR/FIR Filters for Sampling Rate Conversion.
IEEE Trans. Commun.
Tor A. Ramstad
1982 Misc conf
Sample-rate conversion by arbitrary ratios.
ICASSP
Tor A. Ramstad
1982 Misc conf
Sub-band coder with a simple adaptive bit-allocation algorithm a possible candidate for digital mobile telephony?
ICASSP
Tor A. Ramstad
1979 Misc conf
Some considerations on coefficient sensitivity and noise in direct form IIR interpolators and decimators.
ICASSP
Tor A. Ramstad