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Filtering by: Creator Nguyen, Dzung H. Remove constraint Creator: Nguyen, Dzung H. Advisor Liu, Huaping Remove constraint Advisor: Liu, Huaping

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  • Threshold Selection Based on the SNR in Time of Arrival Localization System

    Creator:
    Lyu, Tao
    Abstract:
    Threshold-based time of arrival (TOA) estimation is a technique for high-precision indoor localization. Existing threshold selection methods, such as xed thresh- old and normalized threshold methods, do not consider the signal-to-noise radio (SNR) value at the receiver. This is not desired for high-precision positioning. A proper threshold value depends on...
    Resource Type:
    Masters Thesis
    Full Text:
    , Dr. Thinh Nguyen, Dr. Alan Wang and Dr. Williams H. Warnes, with their timely help I was able to

  • Sensor communication network within a desktop computer using the DC powerline

    Creator:
    Bahniuk, Eileen Kei
    Abstract:
    Powerline communication (PLC), is becoming a more commonplace method for data transmission, however it is still a very new medium for data transmission, and international standards for powerline communication are still in the process of being developed and established. PLC can provide a means of simplifying the device connectivity to...
    Resource Type:
    Masters Thesis

  • PAPR Reduction of Optical OFDM Systems with Exponential Companding Transform and Zero Padding

    Creator:
    Chen, Deyan
    Abstract:
    Optical wireless communication (OWC) is an alternative to radio frequency (RF)communication with a signi cantly larger and unregulated spectrum. In OWC systems, optical orthogonal frequency division multiplexing (O-OFDM) with intensity modulation and direct detection (IM/DD) is commonly used. There are two common signal structures in most OWC systems based on...
    Resource Type:
    Masters Thesis

  • Ultra-wideband indoor localization systems

    Creator:
    Ye, Ruiqing
    Abstract:
    Indoor localization systems have a variety of applications such as tracking of assets, indoor robot navigation, and monitoring of people (e.g. patients) in hospitals or at home. Global positioning system (GPS) offers location accuracy of several meters and is mainly used for outdoor location-based applications as its accuracy degrades significantly...
    Resource Type:
    Dissertation
    Full Text:
    understanding and caring to my study and life. I am deeply indebted to Dr. Patrick Chiang, Dr. Thinqh Nguyen

  • Security protocols for linear network coding

    Creator:
    Adeli, Majid
    Abstract:
    Network coding, as the next generation of data routing protocols, enables each intermediate node in a network to process and encode its received data before forwarding it to the next nodes. Hence, the core idea in network coding is to allow a network to encode the data that is being...
    Resource Type:
    Dissertation

  • Receiver synchronization for UWB TDOA localization

    Creator:
    Baek, Seungjin
    Abstract:
    Pulsed ultra-wideband (UWB) radio uses extremely short pulses to transmit information. Such pulses provide very fine timing information, which has led to technological advances in high-precision localization. This thesis investigates UWB localization strategies with a focus on receiver synchronization algorithms for time-difference-of-arrival localization to achieve centimeter accuracies in a 3-dimensional...
    Resource Type:
    Masters Thesis
    Full Text:
    deeply indebted to Dr. Patrick Chiang, Dr. Thinh Nguyen, and Dr. David McIntyre for their great efforts

  • Channel estimation and data detection for mobile MIMO OFDM systems

    Creator:
    Gao, Jie
    Abstract:
    Designing spectral efficient, high-speed wireless links that offer high quality- of-service and range capability has been a critical research and engineering challenge. In this thesis, we mainly address the complexity and performance issues of channel estimation and data detection in multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems over...
    Resource Type:
    Dissertation
    Full Text:
    the way. I am deeply indebted to Dr. Bart Eleveld, Dr. Mario E. Magaña, Dr. Thinh Nguyen and Dr

  • Efficient multiuser cooperative relay communications employing layered modulations

    Creator:
    Whang, Roderick Jaehoon
    Abstract:
    Relay-assisted cooperative communications are promising solutions for error-performance improvement and cell coverage extension. In this thesis, we propose several efficient cooperative relay communication schemes. First, an efficient space-time coded cooperative relay communications scheme that employs linear precoding and transmission-pattern selection is proposed. This is built upon an existing block linear...
    Resource Type:
    Dissertation
    Full Text:
    gratitude to Dr. Ben Lee, Dr. Mario Magana, Dr. Thinh Nguyen, and Dr. Abi Farsoni for their great efforts

  • Efficient detection and scheduling for MIMO-OFDM systems

    Creator:
    Liu, Wei
    Abstract:
    Multiple-input multiple-output (MIMO) antennas can be exploited to provide high data rate using a limited bandwidth through multiplexing gain. MIMO combined with orthogonal frequency division multiplexing (OFDM) could potentially provide high data rate and high spectral efficiency in frequency-selective fading channels. MIMO-OFDM technology has been widely employed in modern communication...
    Resource Type:
    Dissertation
    Full Text:
    deeply indebted to Dr. Ben Lee, Dr. Thinh Nguyen, Dr. Raviv Raich and Dr. Abi T. Farsoni for their

  • Transmission and Combining for Hybrid Automatic Repeat Request in Multiple-Input Multiple-Output Systems

    Creator:
    Whang, Younghoon
    Abstract:
    Hybrid automatic repeat request (HARQ) schemes combine packet retransmission with forward error correction to ensure a reliable communications. In multiple-input multiple output (MIMO) systems, interference cancellation (IC) detection is widely used where the detection and cancellation steps of the simultaneously transmitted data streams occur. In principle, the signal stream estimated...
    Resource Type:
    Dissertation
    Full Text:
    (·)H the conjugate-transpose or Hermitian of a matrix ‖ · ‖2 the squared norm of a matrix rank(·) the