Results 21 to 30 of about 11,208 (180)

An adaptive hidden Markov model for indoor OFDM based wireless systems

Journal of Telecommunications and Information Technology, 2004
Detailed physical layer simulation of orthogonal frequency division multiplexing (OFDM) systems requires programs that execute too slowly due to long coherence time of the indoor mobile channel.
Christos V. Verikoukis
doaj   +1 more source

Discrete Multitone Modulation for Maximizing Transmission Rate in Step-Index Plastic Optical Fibres [PDF]

, 2009
The use of standard 1-mm core-diameter step-index plastic optical fiber (SI-POF) has so far been mainly limited to distances of up to 100 m and bit-rates in the order of 100 Mbit/s.
Andreas Bluschke, Antonius, M.J., Bosco, Gabriella, Florian Breyer, Gaudino, Roberto, Henrie, P.A., Jeffrey Lee, S.C., Michael Matthews, Philipp Rietzsch, Rainer Steglich, Sebastian Randel   +10 more
core   +1 more source

Multicarrier Access and Routing for Wireless Networking

EURASIP Journal on Wireless Communications and Networking, 2005
A multicarrier access and routing system has been proposed for use in wireless networks. Users within each cell access a radio port (RP). All RPs are connected to a radio exchange node (REN) which routes the calls or packets.
Gerakoulis Diakoumis
doaj   +2 more sources

Multicarrier parameter optimization in doubly selective fading channels with LOS components. [PDF]

, 2006
P
Steendam, Heidi
core   +2 more sources

Computationally Efficient Power Allocation Algorithm in Multicarrier-Based Cognitive Radio Networks: OFDM and FBMC Systems

EURASIP Journal on Advances in Signal Processing, 2010
Cognitive Radio (CR) systems have been proposed to increase the spectrum utilization by opportunistically access the unused spectrum. Multicarrier communication systems are promising candidates for CR systems. Due to its high spectral efficiency, filter
Shaat Musbah, Bader Faouzi
doaj   +2 more sources

FTN multicarrier transmission based on tight Gabor frames

EURASIP Journal on Wireless Communications and Networking, 2017
A multicarrier signal can be synthesized thanks to a symbol sequence and a Gabor family (i.e., a regularly time–frequency shifted version of a generator pulse).
Alexandre Marquet, Damien Roque, Cyrille Siclet, Pierre Siohan   +3 more
doaj   +1 more source

Power spectrum characterization of systematic coded UW-OFDM systems [PDF]

, 2013
Unique word (UW)-OFDM is a newly proposed multicarrier technique that has shown to outperform cyclic prefix (CP)-OFDM in fading channels. Until now, the spectrum of UW-OFDM is not thoroughly investigated. In this paper, we derive an analytical expression
Khoshbin, Hossein, Rajabzadeh Oghaz, Morteza, Steendam, Heidi   +2 more
core   +2 more sources

Teknik Pengiriman File Audio Berbasis Software Defined Radio pada Kanal Komunikasi dalam Ruangan dengan Multicarrier OFDM

Jurnal Elkomika
ABSTRAK Transmisi audio pada kanal indoor dipengaruhi oleh efek multipath fading yang dapat mengganggu kualitas sinyal. Multicarrier OFDM digunakan sebagai solusi untuk mengatasi fenomena ini.
FIGA AGHANI ROSYID, SOLICHAH LARASATI, WAHYU PAMUNGKAS   +2 more
doaj   +1 more source

Modified SNR Gap Approximation for Resource Allocation in LDPC-Coded Multicarrier Systems

IEEE Access, 2020
The signal-to-noise ratio (SNR) gap approximation provides a closed-form expression for the SNR required for a coded modulation system to achieve a given target error performance for a given constellation size. This approximation has been widely used for
Adriaan Suls, Jeroen Verdyck, Marc Moonen, Marc Moeneclaey   +3 more
doaj   +1 more source

Multicarrier transmission

IET Signal Processing, 2008
Multicarrier transmission has recently become popular, particularly in the area of wireless broadband access technology. This tutorial overview paper formulates multicarrier transmission from a signal processing point of view and provides an in-depth analytical understanding of its constituent fundamental concepts.
openaire   +2 more sources