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Filtering by: Has journal Communications in Computational Physics Remove constraint Has journal: Communications in Computational Physics Advisor Liu, Huaping Remove constraint Advisor: Liu, Huaping Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering

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  • Ultra-Wideband Relay Communication Systems

    Creator:
    Abbasi, Arash
    Abstract:
    Impulse-radio ultra-wide-band (IR-UWB) signaling is a promising technique for high-speed, short-range relay communications networks. Depending on how the relay node retransmits the signal, there are two main relay schemes: conventional one-directional (one-way) relay model, and bi-directional (two-way) relay model. In bi-directional relay communications, wireless network coding (WNC), also called physical-layer...
    Resource Type:
    Dissertation
    Full Text:
    Communication Systems by Arash Abbasi A THESIS submitted to Oregon State University in partial fulfillment

  • Application of WiMAX to aviation communications

    Creator:
    Kim, Sang Jun
    Abstract:
    The US military is evaluating the capabilities of emerging technologies based on IEEE 802.16 standard as a potential commercial off-the-shelf solution to support the communication requirements of the future war. In the last few years, development in military and telecommunication industries have focused on an intensive use of broadband systems,...
    Resource Type:
    Masters Thesis
    Full Text:
    This thesis was carried out in the Communication group, Department of Electrical Engineering and

  • 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
    Full Text:
    communications is growing fast. The next-generation wireless communication systems will deliver higher capacity

  • Physical layer design of a robust low-power low-complexity optical wireless sensor system with angular diversity for metal-enclosed environments

    Creator:
    Trullinger, Von
    Abstract:
    The desire to apply short-range wireless communication systems to telemetry sensor networks in a metal-enclosed chamber has prompted this study. This thesis will discuss the design of an infrared (IR) communication system for a wireless low-power, low-data- rate sensor network in a metal enclosure. This design requires an in-depth understanding...
    Resource Type:
    Masters Thesis
    Full Text:
    wireless communication systems to telemetry sensor networks in a metal-enclosed chamber has prompted this

  • Design and FPGA implementation of digital transmission over severe ISI channels

    Creator:
    Zhao, Yichen
    Abstract:
    Inter-symbol interference is one of the major factors that make the realization of high-data-rate digital communications system complex. Current designs face two main challenges: how to efficiently utilize the available bandwidth and how to reduce the hardware complexity of the transmitter and receiver. Traditional solutions use a single-band architecture. When...
    Resource Type:
    Masters Thesis
    Full Text:
    . 2.3 Square-Root Raised cosine filter A matched filter in digital communication system is

  • 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:
    Areas in communication, 2005. [5] I. Guvenc and Z. Sahinoglu, “Threshold-based toa estimation for

  • Target Localization Using Approximate Maximum Likelihood for MIMO Radar Systems

    Creator:
    Almalki, Abdulellah
    Abstract:
    This thesis deals with target localization using multiple-input multiple-output (MIMO) radars. In the field of communications, navigation, radar, and sensing networks, one of the common and most sophisticated problems is target localization. We develop a target localization scheme in distributed MIMO radar systems using bistatic range measurements. The localization approach...
    Resource Type:
    Masters Thesis
    Full Text:
    multiplexing gains [10–12]. In the field of communication, navigation, radar, and sensing network, one of the

  • Computationally efficient block diagonalization for downlink multiuser MIMO-OFDM systems

    Creator:
    El Amrani, Samia
    Abstract:
    One of the key challenges in downlink multiuser multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems is the mitigation of the multi-access interference when different users share the same subcarriers. In this work, the block diagonalization (BD) algorithm for inter-user interference pre-cancelation is extended to MIMO-OFDM systems. However, in...
    Resource Type:
    Masters Thesis
    Full Text:
    complexity and performance. Specifically, a 50% reduction in computational load is achieved for less than 5

  • 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:
    combine packet retransmission with forward error correction to ensure a reliable communications. In

  • 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:
    technology has been widely employed in mod­ ern communication systems, such as Wireless Local Area Network