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Multicarrier Systems

  1. Research Article

    A New OFDMA Scheduler for Delay-Sensitive Traffic Based on Hopfield Neural Networks

    This paper introduces a novel joint channel and queuing-aware OFDMA scheduler for delay-sensitive traffic based on a hopfield neural network (HNN) scheme. It allows providing an optimum OFDMA performance by so...

    Nuria García, Jordi Pérez-Romero and Ramón Agustí

    EURASIP Journal on Wireless Communications and Networking 2008 2008:817676

    Published on: 14 January 2008

  2. Research Article

    An MC-SS Platform for Short-Range Communications in the Personal Network Context

    Wireless personal area networks (WPANs) have gained interest in the last few years, and several air interfaces have been proposed to cover WPAN applications. A multicarrier spread spectrum (MC-SS) air interfac...

    Dominique Noguet, Marc Laugeois, Xavier Popon, B. Balamuralidhar, Manuel Lobeira, Narasimha Sortur, Deepak Dasalukunte, Cedric Dehos and Zeta Bakirtzoglou

    EURASIP Journal on Wireless Communications and Networking 2007 2008:830273

    Published on: 26 December 2007

  3. Research Article

    An Efficient Differential MIMO-OFDM Scheme with Coordinate Interleaving

    We propose a concatenated trellis code (TC) and coordinate interleaved differential space-time block code (STBC) for OFDM. The coordinate interleaver, provides signal space diversity and improves the codeword ...

    Kenan Aksoy and Ümit Aygölü

    EURASIP Journal on Wireless Communications and Networking 2007 2008:734258

    Published on: 21 November 2007

  4. Research Article

    How Equalization Techniques Affect the TCP Performance of MC-CDMA Systems in Correlated Fading Channels

    This paper investigates the impact of several equalization techniques for multicarrier code division multiple access systems on the performance at both lower and upper layers (i.e., physical and TCP layers)...

    Barbara M Masini, Giacomo Leonardi, Andrea Conti, Gianni Pasolini, Alessandro Bazzi, Davide Dardari and Oreste Andrisano

    EURASIP Journal on Wireless Communications and Networking 2007 2008:286351

    Published on: 21 November 2007

  5. Research Article

    Power Backoff Reduction Techniques for Generalized Multicarrier Waveforms

    Amplification of generalized multicarrier (GMC) signals by high-power amplifiers (HPAs) before transmission can result in undesirable out-of-band spectral components, necessitating power backoff, and low HPA e...

    F. Danilo-Lemoine, D. Falconer, C.-T. Lam, M. Sabbaghian and K. Wesołowski

    EURASIP Journal on Wireless Communications and Networking 2007 2008:437801

    Published on: 21 November 2007

  6. Research Article

    DOA Estimation in the Uplink of Multicarrier CDMA Systems

    We consider the uplink of a multicarrier code-division multiple-access (MC-CDMA) network and assume that the base station is endowed with a uniform linear array. Transmission takes place over a multipath chann...

    Antonio A. D'Amico, Michele Morelli and Luca Sanguinetti

    EURASIP Journal on Wireless Communications and Networking 2007 2008:851726

    Published on: 20 November 2007

  7. Research Article

    Zero-Forcing and Minimum Mean-Square Error Multiuser Detection in Generalized Multicarrier DS-CDMA Systems for Cognitive Radio

    In wireless communications, multicarrier direct-sequence code-division multiple access (MC DS-CDMA) constitutes one of the highly flexible multiple access schemes. MC DS-CDMA employs a high number of degrees-o...

    Lie-Liang Yang and Li-Chun Wang

    EURASIP Journal on Wireless Communications and Networking 2007 2008:541410

    Published on: 20 November 2007

  8. Research Article

    Optimization of Linear Precoded OFDM for High-Data-Rate UWB Systems

    We investigate the use of a linear precoded orthogonal frequency division multiplexing (LP-OFDM) waveform for high-data-rate ultra-wideband (UWB) systems. This waveform applied for the first time to UWB applic...

    Antoine Stephan, Emeric Guéguen, Matthieu Crussière, Jean-Yves Baudais and Jean-François Hélard

    EURASIP Journal on Wireless Communications and Networking 2007 2008:317257

    Published on: 20 November 2007

  9. Research Article

    Analysis and Compensation of Transmitter and Receiver I/Q Imbalances in Space-Time Coded Multiantenna OFDM Systems

    The combination of orthogonal frequency division multiplexing (OFDM) and multiple-input multiple-output (MIMO) techniques has been widely considered as the most promising approach for building future wireless ...

    Yaning Zou, Mikko Valkama and Markku Renfors

    EURASIP Journal on Wireless Communications and Networking 2007 2008:391025

    Published on: 12 November 2007

  10. Research Article

    MAP Channel-Estimation-Based PIC Receiver for Downlink MC-CDMA Systems

    We propose a joint MAP channel estimation and data detection technique based on the expectation maximization (EM) method with paralel interference cancelation (PIC) for downlink multicarrier (MC) code division...

    Hakan Doğan, Erdal Panayırcı, Hakan A. Çırpan and Bernard H. Fleury

    EURASIP Journal on Wireless Communications and Networking 2007 2008:570624

    Published on: 31 October 2007

  11. Research Article

    Practical Approaches to Adaptive Resource Allocation in OFDM Systems

    Whenever a communication system operates in a time-frequency dispersive radio channel, the link adaptation provides a benefit in terms of any system performance metric by employing time, frequency, and, in cas...

    N. Y. Ermolova and B. Makarevitch

    EURASIP Journal on Wireless Communications and Networking 2007 2008:160307

    Published on: 30 October 2007

  12. Research Article

    Bit Loading Algorithms for Cooperative OFDM Systems

    We investigate the resource allocation problem for an OFDM cooperative network with a single source-destination pair and multiple relays. Assuming knowledge of the instantaneous channel gains for all links in ...

    Bo Gui and Leonard J. Cimini Jr.

    EURASIP Journal on Wireless Communications and Networking 2007 2008:476797

    Published on: 9 October 2007

  13. Research Article

    OFDM Link Performance Analysis under Various Receiver Impairments

    We present a methodology for OFDM link capacity and bit error rate calculation that jointly captures the aggregate effects of various real life receiver imperfections such as: carrier frequency offset, channel...

    Marco Krondorf and Gerhard Fettweis

    EURASIP Journal on Wireless Communications and Networking 2007 2008:145279

    Published on: 16 September 2007

  14. Research Article

    Universal Linear Precoding for NBI-Proof Widely Linear Equalization in MC Systems

    In multicarrier (MC) systems, transmitter redundancy, which is introduced by means of finite-impulse response (FIR) linear precoders, allows for perfect or zero-forcing (ZF) equalization of FIR channels (in th...

    Donatella Darsena, Giacinto Gelli and Francesco Verde

    EURASIP Journal on Wireless Communications and Networking 2007 2008:321450

    Published on: 11 September 2007

  15. Research Article

    Throughput Maximization under Rate Requirements for the OFDMA Downlink Channel with Limited Feedback

    The purpose of this paper is to show the potential of UMTS long-term evolution using OFDM modulation by adopting a combined perspective on feedback channel design and resource allocation for OFDMA multiuser do...

    Gerhard Wunder, Chan Zhou, Hajo-Erich Bakker and Stephen Kaminski

    EURASIP Journal on Wireless Communications and Networking 2007 2008:437921

    Published on: 5 September 2007

  16. Research Article

    A Hybrid Single-Carrier/Multicarrier Transmission Scheme with Power Allocation

    We propose a flexible transmission scheme which easily allows to switch between cyclic-prefixed single-carrier (CP-SC) and cyclic-prefixed multicarrier (CP-MC) transmissions. This scheme takes advantage of the...

    Danilo Zanatta Filho, Luc Féty and Michel Terré

    EURASIP Journal on Wireless Communications and Networking 2007 2008:168032

    Published on: 19 August 2007

  17. Research Article

    CDMA Transmission with Complex OFDM/OQAM

    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 mu...

    Chrislin Lélé, Pierre Siohan, Rodolphe Legouable and Maurice Bellanger

    EURASIP Journal on Wireless Communications and Networking 2007 2008:748063

    Published on: 16 August 2007