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    ITIIS
    2010
    79views more  ITIIS 2010»
    HMM-based Adaptive Frequency-Hopping Cognitive Radio System to Reduce Interference Time and to Improve Throughput
    13 years 9 months ago
    HMM-based Adaptive Frequency-Hopping Cognitive Radio System to Reduce Interference Time and to Improve Throughput
    Download  www.itiis.org
    Cognitive Radio is an advanced enabling technology for the efficient utilization of vacant spectrum due to its ability to sense the spectrum environment. It is important to determ...
    Sung Hwan Shon, Sung Jeen Jang, Jae Moung Kim
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    ITIIS
    2010
    184views more  ITIIS 2010»
    Class 4 Active RFID Multi-hop Relay System based on IEEE 802.15.4a Low-Rate UWB in Sensor Network
    13 years 9 months ago
    Class 4 Active RFID Multi-hop Relay System based on IEEE 802.15.4a Low-Rate UWB in Sensor Network
    Download  www.itiis.org
    The low-rate (LR) UWB is a promising technology for the ubiquitous sensor network (USN) due to its extremely low power consumption and simple transceiver implementation. However t...
    Hong Zhang, SungHyun Hong, KyungHi Chang
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    ITIIS
    2008
    158views more  ITIIS 2008»
    Cross-layer Optimized Vertical Handover Schemes between Mobile WiMAX and 3G Networks
    13 years 10 months ago
    Cross-layer Optimized Vertical Handover Schemes between Mobile WiMAX and 3G Networks
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    Nowadays, wireless packet data services are provided over Wireless MAN (WMAN) at a high data service rate, while 3G cellular networks provide wide-area coverage at a low data serv...
    Jaeho Jo, Jinsung Cho
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    ITIIS
    2008
    69views more  ITIIS 2008»
    A Linear Precoding Technique for OFDM Systems with Cyclic Delay Diversity
    13 years 10 months ago
    A Linear Precoding Technique for OFDM Systems with Cyclic Delay Diversity
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    Cyclic delay diversity (CDD) is considered a simple approach to exploit the frequency diversity, to improve the system performance in orthogonal frequency division multiplexing (O...
    Bing Hui, KyungHi Chang
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    ITIIS
    2008
    84views more  ITIIS 2008»
    A Scalable Recovery Tree Construction Scheme Considering Spatial Locality of Packet Loss
    13 years 10 months ago
    A Scalable Recovery Tree Construction Scheme Considering Spatial Locality of Packet Loss
    Download  www2.cs.uh.edu
    Packet losses tend to occur during short error bursts separated by long periods of relatively error-free transmission. There is also a significant spatial correlation in loss amon...
    Jinsuk Baek, Jehan-François Pâris
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