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OFDMA Architectures, Protocols, and Applications

  1. A fast linear minimum mean square error (LMMSE) channel estimation method has been proposed for Orthogonal Frequency Division Multiplexing (OFDM) systems. In comparison with the conventional LMMSE channel esti...

    Authors: Wen Zhou and Wong Hing Lam
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:752895
  2. In the Long Term Evolution (LTE) of UMTS the Interactive Mobile TV scenario is expected to be a popular service. By using multiresolution with hierarchical modulations this service is expected to be broadcaste...

    Authors: Américo Correia, Nuno Souto, Armando Soares, Rui Dinis and João Silva
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:240140
  3. The orthogonal frequency division multiple access (OFDMA) scheme has been selected as a potential candidate for many emerging broadband wireless access standards. In this paper, a new joint scheduling and reso...

    Authors: I Gutiérrez, F. Bader, R. Aquilué and J. L. Pijoan
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:134579
  4. We propose an RNS arithmetic-based FH pattern design approach that is well suited and easy to implement for practical OFDMA systems. The proposed FH scheme guarantees orthogonality among intracell users while ...

    Authors: Dalin Zhu and Balasubramaniam Natarajan
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:263695
  5. We present an implementation of a mobile-WiMAX (m-WiMAX) base station (BS) that supports smart antenna (SA) functionality. To implement the m-WiMAX SA BS, we must address a number of key issues in baseband sig...

    Authors: Seungheon Hyeon, Changhoon Lee, Chang-eui Shin and Seungwon Choi
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:950674
  6. We address the problem of superimposed trainings- (STs-) based linearly time-varying (LTV) channel estimation and symbol detection for orthogonal frequency-division multiplexing access (OFDMA) systems at the u...

    Authors: Han Zhang, Xianhua Dai, Dong Li and Sheng Ye
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:307375
  7. Multiuser resource allocation for time/frequency slotted wireless communication systems is addressed. A framework for application driven cross-layer optimization (CLO) between the application (APP) layer and m...

    Authors: Andreas Saul and Gunther Auer
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:341689
  8. Quadrature orthogonal frequency division multiple access (Q-OFDMA) systems have been recently proposed to reduce the peak-to-average power ratio (PAPR) and complexity, and improve carrier frequency offset (CFO...

    Authors: Lin Luo, Jian(Andrew) Zhang and Zhenning Shi
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:953018
  9. Existing medium access control (MAC) schemes for wireless local area networks (WLANs) have been shown to lack scalability in crowded networks and can suffer from widely varying delays rendering them unsuited t...

    Authors: H.M. Alnuweiri, Y. Pourmohammadi Fallah, P. Nasiopoulos and S. Khan
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:512865
  10. We propose a novel cross layer scheme to reduce the power consumption of ADCs in OFDM systems. The ADCs in a receiver can consume up to 50% of the total baseband energy. Our scheme is based on resolution-adapt...

    Authors: Xiaoying Shao, Roel Schiphorst and Cornelis H Slump
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:750735
  11. This paper discusses the application of adaptive modulation and adaptive rate turbo coding to orthogonal frequency-division multiplexing (OFDM), to increase throughput on the time and frequency selective chann...

    Authors: Lei Ye and Alister Burr
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:609386
  12. A novel partial frequency response channel estimator is proposed for OFDMA systems. First, the partial frequency response is obtained by least square (LS) method. The conventional discrete Fourier transform (D...

    Authors: Yi Wang, Lihua Li, Ping Zhang and Zemin Liu
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:647130
  13. In mobile worldwide interoperability for microwave access (WiMAX) or 3rd Generation partnership project long-term evolution (3GPP-LTE), uplink virtual multiple input multiple output (MIMO) technology is adopte...

    Authors: Sanhae Kim, Oh-Soon Shin and Yoan Shin
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:307407
  14. IEEE 802.16 network is widely viewed as a strong candidate solution for broadband wireless access systems. Various flexible mechanisms related to QoS provisioning have been specified for uplink traffic at the ...

    Authors: Yi Zhou, Kai Chen, Jianhua He, Haibin Guan, Yan Zhang and Alei Liang
    Citation: EURASIP Journal on Wireless Communications and Networking 2009 2009:635304
  15. The problem of multiservice transmission in OFDMA-based cooperative relay networks is studied comprehensively. We propose a framework to adaptively allocate power, subcarriers, and data rate in OFDMA system to...

    Authors: Xing Zhang, Shuping Chen and Wenbo Wang
    Citation: EURASIP Journal on Wireless Communications and Networking 2008 2009:940518