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ORCIDTor A. Ramstad
Tor Audun Ramstad
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2020 – today
- 2024
[j21]Pål Anders Floor
, Tor A. Ramstad:
Shannon-Kotel'nikov Mappings for Analog Point-to-Point Communications. IEEE Trans. Inf. Theory 70(4): 2491-2517 (2024)
2010 – 2019
- 2019
- [j20]Pål Anders Floor, Raúl Chávez-Santiago, Anna N. Kim, Kimmo Kansanen, Tor A. Ramstad, Ilangko Balasingham:
Communication Aspects for a Measurement Based UWB in-Body to on-Body Channel. IEEE Access 7: 29425-29440 (2019) - 2018
- [j19]Seyyed Hamed Fouladi, Ilangko Balasingham, Kimmo Kansanen, Tor Audun Ramstad:
Blind Source Separation Using Temporal Correlation, Non-Gaussianity and Conditional Heteroscedasticity. IEEE Access 6: 25336-25350 (2018) - 2016
- [c73]Seyyed Hamed Fouladi, Ilangko Balasingham, Kimmo Kansanen, Tor Audun Ramstad:
Extracting remote photoplethysmogram signal from endoscopy videos for vessel and capillary density recognition. EMBC 2016: 227-230 - [c72]Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham:
Layered source-channel coding for uniformly distributed sources over parallel fading channels. PIMRC 2016: 1-6 - 2015
- [j18]Pål Anders Floor, Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham, Niklas Wernersson, Mikael Skoglund:
On Joint Source-Channel Coding for a Multivariate Gaussian on a Gaussian MAC. IEEE Trans. Commun. 63(5): 1824-1836 (2015) - [j17]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:
In-Body to On-Body Ultrawideband Propagation Model Derived From Measurements in Living Animals. IEEE J. Biomed. Health Informatics 19(3): 938-948 (2015) - [c71]Seyyed Hamed Fouladi, Ilangko Balasingham, Tor Audun Ramstad, Kimmo Kansanen:
Accurate heart rate estimation from camera recording via MUSIC algorithm. EMBC 2015: 7454-7457 - 2014
- [j16]Babak Moussakhani, John T. Flåm, Tor A. Ramstad, Ilangko Balasingham:
On change detection in a Kalman filter based tracking problem. Signal Process. 105: 268-276 (2014) - [j15]Emrah Akyol, Kumar Viswanatha, Kenneth Rose, Tor A. Ramstad:
On Zero-Delay Source-Channel Coding. IEEE Trans. Inf. Theory 60(12): 7473-7489 (2014) - [i4]Pål Anders Floor, Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham, Niklas Wernersson, Mikael Skoglund:
Zero-Delay Joint Source-Channel Coding for a Multivariate Gaussian on a Gaussian MAC. CoRR abs/1401.2568 (2014) - 2013
- [j14]Pål Anders Floor, Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham:
Zero Delay Joint Source Channel Coding for Multivariate Gaussian Sources over Orthogonal Gaussian Channels. Entropy 15(6): 2129-2161 (2013) - [c70]Babak Moussakhani, Mohammad Ali Sedaghat, John T. Flåm, Tor A. Ramstad:
On optimal detection for matrix multiplicative data hiding. IH&MMSec 2013: 203-208 - [c69]Emrah Akyol, Kumar Viswanatha, Kenneth Rose, Tor A. Ramstad:
On zero delay source-channel coding: Functional properties and linearity conditions. ISIT 2013: 6-10 - [i3]Emrah Akyol, Kumar Viswanatha, Kenneth Rose, Tor A. Ramstad:
On Zero Delay Source-Channel Coding. CoRR abs/1302.3660 (2013) - 2012
- [j13]Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham:
Optimal and robust communication for a uniform source. IET Commun. 6(6): 577-586 (2012) - [j12]Babak Moussakhani, John T. Flåm, Stig Støa, Ilangko Balasingham, Tor A. Ramstad:
On localisation accuracy inside the human abdomen region. IET Wirel. Sens. Syst. 2(1): 9-15 (2012) - [j11]Pål Anders Floor, Anna N. Kim, Niklas Wernersson, Tor A. Ramstad, Mikael Skoglund, Ilangko Balasingham:
Zero-Delay Joint Source-Channel Coding for a Bivariate Gaussian on a Gaussian MAC. IEEE Trans. Commun. 60(10): 3091-3102 (2012) - [c68]Anna N. Kim, Eirik Jenssen Daling, Tor A. Ramstad, Ilangko Balasingham:
Error concealment and post processing for the capsule endoscope. BODYNETS 2012: 149-152 - [c67]Anna N. Kim, Pål Anders Floor, Tor A. Ramstad, Ilangko Balasingham:
Communication using ultra wide-band pulse position modulation for in-body sensors. BODYNETS 2012: 159-165 - [c66]Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham:
Sum-rate distortion bound for suboptimal multiterminal source coding applied in medical wireless sensor networks. BODYNETS 2012: 201-204 - [c65]Babak Moussakhani, Tor A. Ramstad, John T. Flåm, Ilangko Balasingham:
On localizing a capsule endoscope using magnetic sensors. EMBC 2012: 4058-4062 - [c64]Pål Anders Floor, Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham:
On transmission of multiple Gaussian sources over a Gaussian MAC using a VQLC mapping. ITW 2012: 50-54 - [c63]Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham:
Coded pulse position modulation communication system over the human abdominal channel for medical wireless body area networks. PIMRC 2012: 1992-1996 - [c62]Reza Parseh, Santiago Sanchez Acevedo, Kimmo Kansanen, Marta Molinas, Tor A. Ramstad:
Real-time compression of measurements in distribution grids. SmartGridComm 2012: 223-228 - [c61]Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham:
A Robust Communication System Based on Joint-Source Channel Coding for a Uniform Source. VTC Fall 2012: 1-6 - 2011
- [j10]Hieu T. Nguyen, Tor A. Ramstad, Ilangko Balasingham:
Wireless sensor communication system based on direct-sum source coder. IET Wirel. Sens. Syst. 1(2): 96-104 (2011) - [c60]Pål Anders Floor, Anna N. Kim, Niklas Wernersson, Tor A. Ramstad, Mikael Skoglund, Ilangko Balasingham:
Distributed zero-delay joint source-channel coding for a bi-variate Gaussian on a Gaussian MAC. EUSIPCO 2011: 2084-2088 - [c59]Anna N. Kim, Pål Anders Floor, Tor A. Ramstad, Ilangko Balasingham:
Delay-Free Joint Source-Channel Coding for Gaussian Network of Multiple Sensors. ICC 2011: 1-6 - [c58]Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham:
Very low complexity low rate image coding for the wireless endoscope. ISABEL 2011: 90:1-90:5 - [c57]Pål Anders Floor, Anna N. Kim, Tor A. Ramstad, Ilangko Balasingham, Niklas Wernersson, Mikael Skoglund:
Transmitting multiple correlated gaussian sources over a Gaussian MAC using delay-free mappings. ISABEL 2011: 110:1-110:5 - [i2]Pål Anders Floor, Anna N. Kim, Niklas Wernersson, Tor A. Ramstad, Mikael Skoglund, Ilangko Balasingham:
On Transmission of Two Correlated Gaussian Memoryless Sources over a Gaussian MAC using Delay-Free Mappings. CoRR abs/1101.5716 (2011) - 2010
- [c56]Emrah Akyol, Kenneth Rose, Tor A. Ramstad:
Optimized Analog Mappings for Distributed Source-Channel Coding. DCC 2010: 159-168 - [c55]Anna N. Kim, Tor A. Ramstad:
Bandwidth Expansion in a Simple Gaussian Sensor Network Using Feedback. DCC 2010: 259-268 - [c54]Hieu T. Nguyen, Ilangko Balasingham, Tor A. Ramstad, Pål Anders Floor:
Limited Feedback Transmission Scheme for Wireless Sensor Networks. ICC 2010: 1-6 - [c53]Babak Moussakhani, Ilangko Balasingham, Tor A. Ramstad:
Distributed Signal Estimation Using Binary Sensors with Multiple Thresholds. VTC Spring 2010: 1-5
2000 – 2009
- 2009
- [j9]Fredrik Hekland, Pål Anders Floor, Tor A. Ramstad:
Shannon-kotel-nikov mappings in joint source-channel coding. IEEE Trans. Commun. 57(1): 94-105 (2009) - [j8]Niklas Wernersson, Mikael Skoglund, Tor A. Ramstad:
Polynomial based analog source-channel codes - [transactions papers]. IEEE Trans. Commun. 57(9): 2600-2606 (2009) - [c52]Minh-Long Pham, Tor A. Ramstad, Ilangko Balasingham:
Poster abstract: Ultra wideband biomedical wireless sensor neworks using wavelet lifting for image transmission. IPSN 2009: 385-386 - [c51]Minh-Long Pham, Tor A. Ramstad, Ilangko Balasingham:
Minimizing Power Using Large Bandwidth PPM Transmission and DPCM Source Coding. VTC Spring 2009 - [i1]Pål Anders Floor, Tor A. Ramstad:
On the Analysis of Shannon-Kotel'nikov Mappings. CoRR abs/0904.1538 (2009) - 2008
- [j7]Ilangko Balasingham, Tor A. Ramstad:
Are the Wavelet Transforms the Best Filter Banks for Image Compression? EURASIP J. Image Video Process. 2008 (2008) - 2007
- [j6]Anna N. Kim, Tor A. Ramstad:
Improving the Rate-Distortion Performance of DPCM Using Multirate Processing With Application in Low-Rate Image Coding. IEEE Trans. Signal Process. 55(10): 4958-4968 (2007) - [c50]Stig Støa, Ilangko Balasingham, Tor A. Ramstad:
Data Throughput Optimization in the IEEE 802.15.4 Medical Sensor Networks. ISCAS 2007: 1361-1364 - [c49]Pål Anders Floor, Tor A. Ramstad, Niklas Wernersson:
Power Constrained Channel Optimized Vector Quantizers used for Bandwidth Expansion. ISWCS 2007: 667-671 - 2006
- [c48]Pål Anders Floor, Tor A. Ramstad:
Noise Immunity for 1: N and M: 1 Nonlinear Mappings for Source-Channel Coding. DCC 2006: 446 - [c47]Greg H. Håkonsen, Tor A. Ramstad:
Image Transmission Over Flat Fading Channels Using Joint Source Channel Coding. DCC 2006: 452 - [c46]Fredrik Hekland, Tor A. Ramstad:
Digitising the 2: 1 Shannon Mappings for Transport over Heterogeneous Networks. DCC 2006: 455 - [c45]Greg H. Håkonsen, Tor A. Ramstad, Anders Gjendemsjø:
Image Transmission with Adaptive Power and Rate Allocation over Flat Fading Channels Using Joint Source Channel Coding. ICETE (Selected Papers) 2006: 312-321 - [c44]Greg H. Håkonsen, Tor A. Ramstad, Anders Gjendemsjø:
Image Transmission With Adaptive Power and Rate Allocation Over Flat Fading Channels Using Joint Source Channel Coding. WINSYS 2006: 158-163 - 2005
- [c43]Fredrik Hekland, Geir E. Øien, Tor A. Ramstad:
Using 2: 1 Shannon Mapping for Joint Source-Channel Coding. DCC 2005: 223-232 - [c42]Anna N. Kim, Stefania Sesia, Tor A. Ramstad, Giuseppe Caire:
Combined error protection and compression using turbo codes for error resilient image transmission. ICIP (3) 2005: 912-915 - 2004
- [c41]Stian Johansen, Andrew Perkis, Tor A. Ramstad, Ajit S. Bopardikar:
Fine-granular scalable and error resilient audio coding by tree-structured quantization. ICASSP (4) 2004: 333-336 - [c40]Anna N. Kim, Tor A. Ramstad:
Practical low bit rate predictive image coder using multi-rate processing and adaptive entropy coding. ICIP 2004: 3181-3184 - 2003
- [c39]Anna N. Kim, Tor A. Ramstad:
Improving the rate-distortion performance of DPCM. ISSPA (1) 2003: 97-100 - 2002
- [c38]Anna N. Kim, Tor A. Ramstad:
Comparing performance of entropy constrained scalar quantizer and other scalar quantizers. DSP 2002: 1341-1344 - 2000
- [c37]Helge Coward, Tor A. Ramstad:
Quantizer optimization in hybrid digital-analog transmission of analog source signals. ICASSP 2000: 2637-2640
1990 – 1999
- 1999
- [c36]Tage Røsten, Viktor A. Marthinussen, Tor A. Ramstad, Andrew Perkis:
Filter bank optimization for high-dimensional compression of pre-stack seismic data. ICASSP 1999: 3153-3156 - [c35]Are Hjørungnes, Tor A. Ramstad:
Algorithm for jointly optimized analysis and synthesis FIR filter banks. ICECS 1999: 369-372 - [c34]Are Hjørungnes, Helge Coward, Tor A. Ramstad:
Minimum Mean Square Error Fir Filter Banks with Arbitrary Filter Lengths. ICIP (1) 1999: 619-623 - 1998
- [j5]Ingil Sundsbo, Tor A. Ramstad:
Synthesis filterbank with low hardware complexity for subband image coding. IEEE Trans. Image Process. 7(12): 1717-1724 (1998) - [c33]Tor A. Ramstad:
Fractional rate decimator and interpolator design. EUSIPCO 1998: 1-4 - [c32]Are Hjørungnes, Tor A. Ramstad:
Jointly optimal analysis and synthesis filter banks for bit constrained source coding. ICASSP 1998: 1337-1340 - [c31]Ilangko Balasingham, John M. Lervik, Tor A. Ramstad:
Lossless image compression using integer coefficient filter banks and class-wise arithmetic coding. ICASSP 1998: 1349-1352 - [c30]Tage Røsten, Tor A. Ramstad:
Kirchhoff Migration of 2-D Post-Stack Seismic Data after Subband Decomposition. ICIP (3) 1998: 353-357 - [c29]Ilangko Balasingham, Michael D. Adams, Tor A. Ramstad, Faouzi Kossentini, Helge Coward, Andrew Perkis, Geir E. Øien:
Performance Evaluation of Different Filter Banks in the JPEG-2000 Baseline System. ICIP (2) 1998: 569-573 - 1997
- [c28]Patrick Waldemar, Tor Audun Ramstad:
Hybrid KLT-SVD image compression. ICASSP 1997: 2713-2716 - [c27]Ilangko Balasingham, Tor A. Ramstad, John M. Lervik:
Survey of odd and even length filters in tree-structured filter banks for subband image compression. ICASSP 1997: 3073-3076 - [c26]Arild Fuldseth, Tor A. Ramstad:
Bandwidth compression for continuous amplitude channels based on vector approximation to a continuous subset of the source signal space. ICASSP 1997: 3093-3096 - [c25]Ilangko Balasingham, Arild Fuldseth, Tor A. Ramstad:
On Optimal Tiling of the Spectrum in Subband Image Compression. ICIP (1) 1997: 49-52 - [c24]Arild Fuldseth, Tor A. Ramstad:
Channel-optimized subband video coding for channels with a power constraint. ICIP (3) 1997: 428-431 - [c23]Arild Fuldseth, Ilangko Balasingham, Tor A. Ramstad:
Efficient Coding of the Classification Table in Low Bit Rate Subband Image Coding by Use of Hierarchical Enumeration. ICIP (2) 1997: 649-652 - 1996
- [c22]Ingil Sundsbo, Tor A. Ramstad:
Low complexity synthesis filter bank for subband coding of images. EUSIPCO 1996: 1-4 - [c21]John M. Lervik, Tor A. Ramstad:
Optimality of multiple entropy coder systems for nonstationary sources modelled by a mixture distribution. ICASSP 1996: 1874-1877 - [c20]Arild Fuldseth, Tor A. Ramstad:
Subband video coding with smooth motion compensation. ICASSP 1996: 2331-2334 - [c19]Ilangko Balasingham, Tor A. Ramstad:
Optimized perfect reconstruction tree-structured filter banks for image coding. ICIP (1) 1996: 585-588 - [c18]Arild Fuldseth, Tor A. Ramstad:
Combined video coding and multilevel modulation. ICIP (1) 1996: 941-944 - 1995
- [j4]Sven Ole Aase, Tor A. Ramstad:
On the optimality of nonunitary filter banks in subband coders. IEEE Trans. Image Process. 4(12): 1585-1591 (1995) - [c17]Arild Fuldseth, Tor A. Ramstad:
A new error criterion for block based motion estimation. ICIP (3) 1995: 188-191 - 1994
- [c16]John M. Lervik, Tor A. Ramstad:
An analog interpretation of compression for digital communication systems. ICASSP (5) 1994: 281-284 - [c15]Patrick Waldemar, Tor Audun Ramstad:
Subband coding of color images with limited palette size. ICASSP (5) 1994: 353-356 - [c14]Ryszard Stasinski, Tor A. Ramstad:
Fast algorithms for interpolation and decimation filter banks. ICASSP (3) 1994: 473-476 - [c13]John M. Lervik, Tor A. Ramstad:
Optimal Entropy Coding in Image Subband Coders. ICIP (2) 1994: 390-394 - 1993
- [j3]Sven Ole Aase, Tor A. Ramstad:
Ringing reduction in low bit-rate image subband coding using projection onto a space of paraboloids. Signal Process. Image Commun. 5(3): 273-282 (1993) - [c12]Skjalg Lepsøy, Geir Egil Øien, Tor A. Ramstad:
Attractor image compression with a fast non-iterative decoding algorithm. ICASSP (5) 1993: 337-340 - [c11]Sven Ole Aase, Tor A. Ramstad:
Parallel FIR filter banks for robust subband image coding. ICASSP (5) 1993: 566-569 - 1991
- [j2]Bernt Ribbum, Andrew Perkis, Kuldip K. Paliwal, Tor A. Ramstad:
Performance study of stochastic speech coders. Speech Commun. 10(3): 277-301 (1991) - [c10]Tor A. Ramstad, Joar P. Tanem:
Cosine-modulated analysis-synthesis filterbank with critical sampling and perfect reconstruction. ICASSP 1991: 1789-1792 - [c9]Geir E. Øien, Skjalg Lepsøy, Tor A. Ramstad:
An inner product space approach to image coding by contractive transformations. ICASSP 1991: 2773-2776 - 1990
- [c8]Hakon Gronning, John Håkon Husøy, Tor A. Ramstad:
Image subband coding using an efficient recursive filter bank with complex signals. VCIP 1990 - [c7]John Håkon Husøy, Hakon Gronning, Tor A. Ramstad:
Subband coding of video employing efficient recursive filter banks and advanced motion compensation. VCIP 1990
1980 – 1989
- 1986
- [c6]Tor A. Ramstad:
Considerations on quantization and dynamic bit-allocation in subband coders. ICASSP 1986: 841-844 - [c5]Lars M. Lundheim, Tor A. Ramstad:
Variable rate coding for speech storage. ICASSP 1986: 3079-3082 - 1984
- [c4]Allen Gersho, Tor A. Ramstad, I. Versvik:
Fully vector-quantized subband coding with adaptive codebook allocation. ICASSP 1984: 408-411 - 1982
- [j1]Tor A. Ramstad:
Digital Two-Rate IIR and Hybrid IIR/FIR Filters for Sampling Rate Conversion. IEEE Trans. Commun. 30(7): 1466-1476 (1982) - [c3]Tor A. Ramstad:
Sample-rate conversion by arbitrary ratios. ICASSP 1982: 101-104 - [c2]Tor A. Ramstad:
Sub-band coder with a simple adaptive bit-allocation algorithm a possible candidate for digital mobile telephony? ICASSP 1982: 203-207
1970 – 1979
- 1979
- [c1]Tor A. Ramstad:
Some considerations on coefficient sensitivity and noise in direct form IIR interpolators and decimators. ICASSP 1979: 371-374
Coauthor Index
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