Browsing 2006 Auswireless Conference by Title

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Browsing 2006 Auswireless Conference by Title

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  • Deshpande, Vivek S. (2007-03-12)
    Mobile Ad-Hoc Networks (MANETs) are becoming increasingly popular as more and more mobile devices find their way to the public, besides traditional" uses such as military battlefields and disaster situations they are being ...
  • Berber, Stevan M.; Jovic, Branislav. (2007-03-12)
    A mathematical model of a synchronization block of a DS-CDMA system is developed and then investigated using a simulation. For this synchronization a pilot sequence has been used that can be a pseudorandom sequence or a ...
  • Chang, Jau-Yang.; Chen, Hsing-Lung. (2007-03-12)
    Multimedia applications (audio phone, video on demand, video conference, file transfer, etc.) will be integrated into future mobile communication systems. Bandwidth is the most critical resource in mobile multimedia wireless ...
  • Bacha, Mansour.; Djebouri, Djamel.; Kameche, Mohamed. (2007-03-12)
    This paper discusses the simulation and the design of an RF transmitter for small satellites operating in the commercial S- band (2.2 - 2.29 GHz) with a data rate of 8Mbps. In such systems, modelling frequency-dependent ...
  • Patachaianand, Rachod.; Sandrasegaran, Kumbesan. (2007-03-12)
    Wideband Code Division Multiple Access (WCDMA) is the multiple access technique used in the third generation of mobile telecommunication (3G) systems. Capacity of this technique does not have an exact limit. The maximum ...
  • Sithamparanathan Kandeepan (2007-03-12)
    The study of phase locked loops (PLL) has been heavily treated in literature and most of the theoretical and the analytical results of such are verified using simulations. Here we provide a real-time implementation of a ...
  • Li, Xuan.; Senadji, Bouchra. (2007-03-12)
    Two major sources of interference affect asynchronous MC-CDMA systems, i.e. multiple access interference due to subcarriers with the same frequency (MAI) and multiple access interference due to subcarriers with different ...
  • Chicharo, Joe.; Dutkiewicz, Eryk.; Tran, Le Chung.; Huang, Xiaojing. (2007-03-12)
    In this paper, we expand the idea of spreading the transmitted symbols in OFDM systems by unitary spreading matrices based on the rotated Hadamard or rotated Discrete Fourier Transform (DFT) matrices proposed in the ...
  • Zhu, Yaolin.; Li, Changyi.; Zheng, Guoxin. (2007-03-12)
    In this paper, the channel estimation techniques for multiband (MB) OFDM ultra-wideband (UWB) wireless communications are investigated. By combining orthogonal frequency-division multiplexing (OFDM) with multi-band, the ...
  • Lowe, Darryn.; Raad, Ibrahim S.; Huang, Xiaojing. (2007-03-12)
    This paper presents the study undertaken with block spread OFDM and compares three spreading matrices. The matrices include the Hadamard, Rotated Hadamard and Mutually Orthogonal Complementary Sets of Sequences (MOCSS). ...
  • Chimeh, Jahangir Dadkhah; Bakhshi, Hamid Reza; Menhaj, Mohammad Bagher (2007-03-12)
    In this paper, a semi-blind beamforming algorithm is proposed for Orthogonal Frequency Division Multiplexing (OFDM) signals to combat multipath fading which is based on semi-blind beamforming of each sub-band in a OFDM ...
  • Yang, Feng.; Fang, Gengfa.; Shi, Jinglin.; Dutkiewicz, Eryk. (2007-03-12)
    In this paper, we present a novel and efficient Subcarrire Allocation algorithm with Minimum Data RAte (SAMDRA) constraint for multiuers orthogonal frequency division multiple access (OFDMA) wireless networks. The proposed ...
  • Pawlikowski, Krzysztof.; Sirisena, Harsha R.; Jayananthan, A. (2007-03-12)
    TCP optimization for wireless networks to deal with packet losses due to fading, shadowing and contention should preferably maintain TCP end-to-end semantics with minimal dependence on intermediate nodes. The development ...
  • Ni, David.; Arndt, Dickey.; Ni, Jianjun.; Gross, Julia.; Ngo, Phong.; Phan, Chau. (2007-03-12)
    This paper describes a design effort for a prototype ultra-wideband (UWB) tracking system that is currently under development at NASA Johnson Space Center (JSC). The system is being studied for use in tracking of lunar/Mars ...
  • Ali, Borhanuddin Mohd.; Fun, Chan Sook.; Abdullah, Mohd. Khazani.; Khatun, Sabira.; Saeed, Rashid A. (2007-03-12)
    UWB communication refers to impulse radio technology, in which wireless data is transferred using time domain modulation of data and extremely narrow radio impulses (i.e. nanosecond duration) that occupy typically several ...
  • Untitled 
    Unknown author (2007-03-12)
  • Nkansah-Gyekye, Yaw.; Agbinya, Johnson I. (2007-03-12)
    This paper reports on the design and implementation of multi-criteria vertical handoff decision algorithms in a heterogeneous wireless wide area network (WWAN) and a wireless local area network (WLAN) environment. An ...
  • Dao, Nghia T; Wei, Xun; Malaney, Robert A. (2007-03-12)
    Crucial to supporting voice over 802.11b is the knowledge of voice capacity (Nc) of a single Access Point. This paper provides an analytical formulation of Nc in the case where all traffic in the network is voice. Our ...
  • Sun, Yan; Kumar, Anup; Srinivasam, S. (2007-03-12)
    This article presents an incremental and scalable solution for tracing Denial of Service (DoS) and Distributed DoS (DDoS) attacks. Our approach allows the victim to identify the network paths traversed by attack traffic ...