Results 271 to 280 of about 60,674 (300)

Diagonal algebraic space-time block codes

IEEE Transactions on Information Theory, 2002
Summary: We construct a new family of linear space-time (ST) block codes by the combination of rotated constellations and the Hadamard transform, and we prove them to achieve the full transmit diversity over a quasi-static or fast fading channel. The proposed codes transmit at a normalized rate of 1 symbol/\(s\).
Mohamed Oussama Damen, Karim Abed-Meraim, Jean-Claude Belfiore   +2 more
openaire   +2 more sources

Performance of space-time block coding and space-time trellis coding for impulse radio

IEEE Global Telecommunications Conference, 2004. GLOBECOM '04., 2005
Ultra wideband (UWB) systems have attracted a lot of research interest lately, owing to their appealing features in short-range mobile communications. These features include low power peer-to-peer transmissions, multiple access communications, high data rates, and precise positioning capabilities.
Heliot, F, Ghavami, M, Nakhai, M R, Aghvami, A H   +3 more
openaire   +1 more source

Equivalent codes and optimality of orthogonal space-time block codes

2011 Conference Record of the Forty Fifth Asilomar Conference on Signals, Systems and Computers (ASILOMAR), 2011
An equivalent model of a multiple-input multiple-output (MIMO) communication system with orthogonal space-time block coding (OSTBC) is proposed based on a newly found connection between OSTBCs and Euclidian codes. A new asymptotic upper bound on the symbol error rate (SER) of OSTBC, which is based on distance spectra of the introduced equivalent ...
Alex E. Geyer, Sergiy A. Vorobyov, Norman C. Beaulieu   +2 more
openaire   +1 more source

PARAFAC2 Receivers for Orthogonal Space-Time Block Codes

2009 IEEE International Conference on Communications, 2009
Space-Time Block Codes can be represented by tensors, like for example the Kathri-Rao Space Time codes introduced by Sidiropoulos. In this paper, we introduce a Parallel Factor Analysis 2 (PARAFAC2) model for Orthogonal Space-Time Block Codes (OSTBC). This model, along with tensor diagonalisation designed for orthogonal tensors, leads us to develop a ...
Sorensen, Mikael, Comon, Pierre, Icart, Sylvie, Deneire, Luc   +3 more
openaire   +2 more sources

Noncoherent space-time block coded modulation

2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577), 2004
Unitary space-time modulation is well tailored for flat fading channels where the noncoherent receiver is used. In this paper, we propose a novel scheme of unitary space-time modulation, called noncoherent space-time block coded modulation, by using the set partitioning of signal sets and multilevel coding.
openaire   +1 more source

High-Rate Space-Time Block Coding Schemes

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2008
A rate-6/4 full-diversity orthogonal space-time block code (STBC) is constructed for QPSK and 2 transmit antennas by applying constellation scaling and rotation to the set of quaternions used in Alamouti code. Also given is a rate-9/8 full-diversity quasi-orthogonal space-time block code (QOSTBC) for 4 transmit antennas.
Duy H. N. Nguyen, Ha H. Nguyen 0001, Hoang Duong Tuan   +2 more
openaire   +1 more source

A quasi-orthogonal space-time block code

2000 IEEE Wireless Communications and Networking Conference. Conference Record (Cat. No.00TH8540), 2001
Summary: It has been shown that a complex orthogonal design that provides full diversity and full transmission rate for a space-time block code is not possible for more than two antennas. Previous attempts have been concentrated in generalizing orthogonal designs which provide space-time block codes with full diversity and a high transmission rate.
openaire   +2 more sources

Index modulation aided generalized space-time block coding: A unified MIMO framework

Digital Communications and Networks, 2023
Zhiqin Wang, Lixia Xiao, Tao Jiang
exaly  

Space time block codes with turbo codes

2011
This paper aims to provide efficient solutions to improve the power efficiency, like implementation of schemes using MIMO (Multiple-Input Multiple-Output), with error correction codes. Thanks to the union of these two techniques is possible to obtain a low error probability with low power consumption. This paper shows STBC (Space Time Block Codes) with
Torres, Paulo, Costa, Ludovic Mamede, Gusmão, António   +2 more
openaire   +1 more source

Space-time block coding for wireless communications: performance results

IEEE Journal on Selected Areas in Communications, 1999
V Tarokh, Hamid Jafarkhani, A R Calderbank   +2 more
exaly