Kungl Tekniska Högskolan

Cryptanalysis of Symmetric Block Ciphers (2009)

Kungl Tekniska Högskolan, Computer Science, Gustaf Dellkrantz, Supervisor K. U, Leuven Christophe, De Cannière, ...

This thesis is focused on the cryptanalysis of block ciphers. We give an introduction to the theory of block ciphers and an overview of cryptanalytic attacks. Our contribution is the analysis of two...

Centre for Autonomous Systems Active Vision (2009)

Henrik I, Henrik I Christensen, Kungl Tekniska Högskolan, Henrik I, Henrik I

In sensing there are often discussions on active vs passive sensing. Active Vision � = Active Sensing This is a “passive ” sensory modality New version of slides will be made available with...

Supervisor at Nada was Henrik Eriksson (2008)

Kungl Tekniska Högskolan, Computer Science, Edvard Sjögren

This Master’s thesis investigates how the state machine modeling concept, as defined in the UML specification, can be used to simulate systems which exhibit a hybrid of continuous and discrete...

An ASIC Implementation and Evaluation of a Profiled Variable Length Instruction Set Architecture (2008)

Kungl Tekniska Högskolan, Bobby Sleeba

This thesis presents implementation of an extension to an existing instruction set architecture, which gains considerable reduction in power consumption. The reduction in power consumption is...

Supervisor at Nada was Stefan Nilsson (2008)

Kungl Tekniska Högskolan, Computer Science, Karl Hasselström

I have investigated, theoretically and experimentally, under what circumstances Newton division (inversion of the divisor with Newton’s method, followed by division with Barrett’s method) is the...

Supervisor at Nada was Prof. Anders Lansner (2008)

Kungl Tekniska Högskolan, Computer Science, Anders Eriksson

A crucial issue in reinforcement learning applications is how to set meta-parameters, such as the learning rate and ”temperature ” for exploration, to match the demands of the task and the...

WHAT CAN THE BODY MOVEMENTS REVEAL ABOUT A MUSICIAN’S EMOTIONAL INTENTION? (2008)

Sofia Dahl, Anders Friberg, Kungl Tekniska Högskolan

Music has an intimate relationship with motion in several aspects. Obviously, movements are required to play an instrument but musicians move also their bodies in a way not directly related to note...

Supervisor at Nada was Anders Lansner (2008)

Kungl Tekniska Högskolan, Computer Science, Stefan Elfwing

Because the learning time is exponential in the size of the state space, a hierarchical learning structure is often introduced into reinforcement learning (RL) to handle large scale problems....

Enumerative combinatorics related to partition shapes (2008)

Jonas Sjöstrand, Kungl Tekniska Högskolan

This thesis deals with enumerative combinatorics applied to three different objects related to partition shapes, namely tableaux, restricted words, and Bruhat intervals. The main scientific...

Centre for Autonomous Systems (2008)

Guido Zunino, Henrik I Christensen, Kungl Tekniska Högskolan

Abstract. This paper describes an accurate and robust algorithm for Simultaneous Localization and Map Building (SLAM). The objective of SLAM is to enable a mobile robot to build an internal...

Signal Processing (2008)

Kungl Tekniska Högskolan, Niclas Björsell, Daniel Rönnow, Peter Händel

c ○ 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for...

Supervisor at Nada was Stefan Arnborg (2008)

Kungl Tekniska Högskolan, Computer Science

In this Master’s thesis, Bayesian data mining techniques are used to analyze a database containing information from schizophrenia affected and healthy persons. The aim is to find dependencies...

Centre for Autonomous Systems (2008)

Henrik I Christensen, Kungl Tekniska Högskolan

While the current part carries the title “path planning ” the contributions in this section covers two topics: mapping and planning. In some sense one might argues that intelligent (autonomous)...

Wide-Band Dynamic Modeling of Power Amplifiers Using Radial-Basis Function Neural Networks (2008)

Kungl Tekniska Högskolan, Magnus Isaksson, Student Member, David Wisell, Daniel Rönnow

c ○ 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for...

A Bayesian Filtering- Approach for Calibrating a Look-Up Table used for ADC Error Correction (2008)

Luca De Vito, Henrik Lundin, Sergio Rapuano, Kungl Tekniska Högskolan, Luca De Vito, ...

Canada. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or...

A Bandwidth Extension Technique for Dynamic Characterization of Power Amplifiers (2008)

Kungl Tekniska Högskolan, David Wisell, Daniel Rönnow, Peter Händel

c ○ 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for...

Mats Lundqvist: Silicon Strip Detectors for Scanned Multi-Slit X-Ray Imaging (2007)

Kungl Tekniska, H Ögskolan, Kungl Tekniska Högskolan

Digital imaging systems for medical applications must be based upon highly efficient detectors to ensure low patient dose. This is particularly important in screening mammography because of the large...

Multi-Scale Feature Tracking and Motion Estimation (2007)

H Ögskolan, Lars Bretzner, Kungl Tekniska Högskolan

This thesis studies the problems of feature tracking and motion estimation and presents an application of these concepts to human-computer interaction. The presentation is divided into three parts....

Some notes on the Kronecker model (2006)

Kungl Tekniska Högskolan, Mats Bengtsson, Mats Bengtsson, Per Zetterberg, Per Zetterberg

The so-called Kronecker model for a MIMO channel is very popular, not the least because of its mathematical tractability. However, it has also often been criticized for not being able to accurately...

Implementation of a smart antenna multiuser algorithm on a DSP-based wireless MIMO test-bed (2005)

Kungl Tekniska Högskolan, Patrick Svedman, Patrick Svedman, Henrik Lundin, Henrik Lundin, Xi Zhang, ...

This report describes the implementation and performance of three communication schemes on a DSP-based MIMO test-bed. A multicell scenario with two base stations and two users in the same room is...

A NEW SUBSPACE IDENTIFICATION METHOD FOR OPEN AND CLOSED LOOP DATA (2005)

Magnus Jansson, Kungl Tekniska Högskolan, Magnus Jansson

Abstract: Subspace methods have emerged as useful tools for the identification of linear time invariant discrete time systems. Most of the methods have been developed for the open loop case to avoid...

On the estimation of quantizer reconstruction levels (2005)

Henrik Lundin, Mikael Skoglund, Peter Händel, Kungl Tekniska Högskolan

Canada. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or...

Executive Summary (2005)

Kungl Tekniska Högskolan

The Centre for Autonomous Systems (CAS) is an inter-departmental research unit at the Kungliga

Loop closing etc. See also presentation by Leonard, (2004)

John Folkesson, Henrik I. Christensen, Kungl Tekniska Högskolan, Tardos Nebot

Why is SLAM difficult? The number of map hypotheses is very large Often the signal to noise ratio for feature is ≈ 1 Robust discriminative features are not common The “process ” is often...

Executive Summary (2004)

Kungl Tekniska Högskolan, Henrik I Christensen, Björn Weichbrodt

The Centre for Autonomous Systems is an inter departmental research unit at KTH that does research on robotics and advanced autonomous systems. The effort involves basic and applied research related...

Executive summary (2004)

Kungl Tekniska Högskolan

The goal of the VISCOS project is to develop enabling techniques for cognitive vision that can be applied in various IT-systems, and to demonstrate these in prototypes and implementations. The...

A wideband statistical model for nlos indoor mimo channels (2002)

Kungl Tekniska Högskolan, Kai Yu, Kai Yu, Mats Bengtsson, Mats Bengtsson, ...

Herein, results of 5.2 GHz wideband indoor multiple input multiple output (MIMO) channel measurements under the EU IST SATURN project are reported. Our investigation shows that for non-line-of-sight...

A 20 MHz HiperLAN/2 MIMO Channel Model in NLOS Indoor Scenarios (2002)

Kungl Tekniska Högskolan, Kai Yu, Kai Yu, Mats Bengtsson, Mats Bengtsson, ...

In this paper, we present results of 5.2 GHz wideband indoor multiple input multiple output (MIMO) channel measurements under the EU IST SATURN project . First we show the average power delay profile...

Models for MIMO Propagation Channels, A Review (2002)

Kai Yu, Björn Ottersten, Kungl Tekniska Högskolan

This paper reviews recently published results on multiple input multiple output (MIMO) channel modeling. Both narrowband and wideband models are considered. We distinguish between two main approaches...

Measurement analysis of NLOS indoor MIMO channels (2001)

Kungl Tekniska Högskolan, Kai Yu, Kai Yu, Mats Bengtsson, Mats Bengtsson, ...

Abstract: In this paper, we present results from measurements conducted by the University of Bristol. We study the channel characteristics of Multiple-Input-Multiple-Output (MIMO) indoor channel at...

Second order statistics of NLOS indoor MIMO channels based on 5.2 GHz measurements (2001)

Kungl Tekniska Högskolan, Kai Yu, Kai Yu, Mats Bengtsson, Mats Bengtsson, ...

Abstract – Herein, results from measurements conducted by the University of Bristol are presented. The channel characteristics of Multiple Input Multiple Output (MIMO) indoor systems at 5.2 GHz are...

Spatial Characterization of Indor Radio. . . (2000)

Rickard Stridh, Björn Ottersten, Kungl Tekniska Högskolan

Multiple transmitters and receivers can be used to provide high link capacity in future wireless systems. Herein analysis of real indoor environment Multiple-Input-MultipleOutput measurements on the...

Automatic generation of of digital surface models through matching in object space (1998)

H. Wiman, Kungl Tekniska Högskolan

A system for the automatic reconstruction of a three dimensional terrain surface is presented. Matching is performed in object space, so that an arbitrary number of overlapping images, with a minimum...

Figure-Ground Segmentation Using Multiple Cues (1998)

H Ögskolan, H Ögskolan, Peter Nordlund, Peter Nordlund, Kungl Tekniska Högskolan

this paper is included in the thesis. There also exists a technical report with identical contents as the journal contribution, moreover there is a shortened conference contribution

Affine Permutations of Type A (1995)

Anders Björner, Francesco Brenti, Kungl Tekniska Högskolan

We study combinatorial properties, such as inversion table, weak order and Bruhat order, for certain infinite permutations that realize the a#ne Coxeter group A n . 1 Introduction Denote by S n the...

Proposed running head: Send proofs to: Generalized NBC Theorem (1994)

Bruce E. Sagan, Möbius Function, Poincaré Polynomial, Bruce E. Sagan, Kungl Tekniska Högskolan, Bruce E. Sagan

We generalize Rota’s theorem characterizing the Möbius function of a geometric lattice in terms of subsets of atoms containing no broken circuit and give applications to the weak Bruhat order of a...

Log-linear Models (1990)

Henrik I. Christensen, Kungl Tekniska Högskolan, O. Wijk, J. Folkesson, G. Zunino, ...

Feature requirements Discrimination → recognition Invariance: Scale, translation, rotation Well defined uncertainty model SLAM-2004: Feature Detection August 4, 2004 – [4] Representations...