Results 81 to 90 of about 10,985 (203)

CDMA Transmission with Complex OFDM/OQAM

open access: yesEURASIP Journal on Wireless Communications and Networking, 2008
We propose an alternative to the well-known multicarrier code-division multiple access (MC-CDMA) technique for downlink transmission by replacing the conventional cyclic-prefix orthogonal frequency division multiplexing (OFDM) modulation by an advanced ...
Lélé Chrislin   +3 more
doaj  

On the Road to 5G: Comparative Study of Physical Layer in MTC Context

open access: yesIEEE Access, 2017
During the past few years, we are witnessing the emergence of 5G and its high-level performance targets. Waveform (WF) design is one of the important aspects for 5G that received considerable attention from the research community in recent years. To find
Yahia Medjahdi   +11 more
doaj   +1 more source

Bit and Power Allocation in Constrained Multicarrier Systems: The Single-User Case

open access: yesEURASIP Journal on Advances in Signal Processing, 2007
Multicarrier modulation is a powerful transmission technique that provides improved performance in various communication fields. A fundamental topic of multicarrier communication systems is the bit and power loading, which is addressed in this article as
Theodore Antonakopoulos   +1 more
doaj   +1 more source

Turbo-per-Tone Equalization for ADSL Systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
We study the equalization procedure in discrete multitone (DMT)-based systems, in particular, in DMT-based ADSL systems. Traditionally, equalization is performed in the time domain by means of a channel shortening filter.
Vanhaute Hilde, Moonen Marc
doaj   +1 more source

Performance of Fractionally Spread Multicarrier CDMA in AWGN as Well as Slow and Fast Nakagami-m Fading Channels

open access: yes, 2005
—In multicarrier code-division multiple-access (MCCDMA), the total system bandwidth is divided into a number of subbands, where each subband may use direct-sequence (DS) spreading and each subband signal is transmitted using a subcarrier frequency.
Hanzo, L., Yang, L-L.
core  

A General Analytical Formulation for LCL Filter Design for Grid-Connected PWM-Driven Cascaded H-Bridge Inverters

open access: yesIEEE Open Journal of Power Electronics
This paper proposes a general analytical formulation for LCL filter design for grid-connected PWM-driven cascaded H-bridge inverters. The novelty of this work deals with providing some easy-of-use analytical expressions that allow for properly sizing the
Giuseppe Schettino   +5 more
doaj   +1 more source

CP-Based SBHT-RLS Algorithms for Tracking Channel Estimates in Multicarrier Modulation Systems

open access: yesJournal of Electrical and Computer Engineering, 2012
Cyclic prefix (CP) in multicarrier modulation systems has been considered as an alternative to the training sequences to track channel estimates. In this paper, two new algorithms are developed that exploit CP from their data detection part and employ ...
H. Ali
doaj   +1 more source

Hexagonal Multicarrier Faster-Than-Nyquist Signaling

open access: yesIEEE Access, 2017
Multicarrier faster-than-Nyquist (MFTN) signaling is a spectral efficient modulation scheme for future communication systems. In MFTN signaling, the intersymbol interference (ISI) and intercarrier interference (ICI) are introduced intentionally by the ...
Siming Peng   +3 more
doaj   +1 more source

Design and Characteristic Analysis of Multicarrier Chaotic Phase Coded Radar Pulse Train Signal

open access: yesInternational Journal of Antennas and Propagation, 2014
By introducing phase code into multicarrier orthogonal frequency division multiplex signal, the multicarrier phase coded (MCPC) radar signal possesses a good spectrum utilization rate and can achieve a good combination of narrowband and wideband ...
Qiongdan Huang   +3 more
doaj   +1 more source

Reed Solomon Coding in Orthogonal Frequency Division Multiplexing (OFDM) Communication Systems

open access: yesJournal of Engineering and Sustainable Development, 2012
This paper presents a MATLAB simulation that has been developed to investigate Orthogonal Frequency Division Multiplexing (OFDM) communication system using Reed Solomon (RS) Coding process. The efficient encoding and decoding algorithm, and the powerful
Kadhum Al-Majdi   +2 more
doaj  

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