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ICPR
2008
IEEE
16 years 1 months ago
Embedding HMM's-based models in a Euclidean space: The topological hidden Markov models
One of the major limitations of HMM-based models is the inability to cope with topology: When applied to a visible observation (VO) sequence, HMM-based techniques have difficulty ...
Djamel Bouchaffra
ICRA
2008
IEEE
117views Robotics» more  ICRA 2008»
16 years 1 months ago
Tracking hidden agents through shadow information spaces
— This paper addresses problems of inferring the locations of moving agents from combinatorial data extracted by robots that carry sensors. The agents move unpredictably and may ...
Jingjin Yu, Steven M. LaValle
VTC
2008
IEEE
129views Communications» more  VTC 2008»
16 years 1 months ago
Cooperative Communication in Space-Time-Frequency Coded MB-OFDM UWB
Abstract— Though cooperative communication has been intensively examined for general wireless systems, such as mobile and ad-hoc networks, it has been almost unexplored in the ca...
Le Chung Tran, Alfred Mertins, Tadeusz A. Wysocki
VTC
2008
IEEE
120views Communications» more  VTC 2008»
16 years 1 months ago
Near-Capacity Iteratively Decoded Space-Time Block Coding
— Iteratively decoded near-capacity Space-Time Block Coding (STBC) schemes are designed. Recursive unity-rate codes and IRregular Convolutional Codes (IRCCs) are employed for ass...
Soon Xin Ng, Sushanta Das, Jin Wang, Lajos Hanzo
WCNC
2008
IEEE
16 years 1 months ago
Two-Stage Code Acquisition Employing Search Space Reduction and Iterative Detection in the DS-UWB Downlink
— In this paper we propose and investigate an iterative code acquisition scheme assisted by both search space reduction and iterative Massage Passing (MP), which was designed for...
Seung Hwan Won, Lajos Hanzo