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Filtering by: Creator Cooper, R. L. Remove constraint Creator: Cooper, R. L. Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering Subject Wireless communication systems Remove constraint Subject: Wireless communication systems

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  • Network coding in relay networks

    Creator:
    Alban, Eduardo
    Abstract:
    Transmission over wireless networks presents multiple technical challenges due to noise, interference, fading, power constraints and bandwidth limitation. Different solutions have been propposed to overcome these issues and some of them are treated here. Cooperative diversity has been proposed as an implementation for networks where terminals are restricted to using...
    Resource Type:
    Masters Thesis
    Full Text:
    of R = 1bit/s/Hz. Moreover, a TDM transmission scheme is used for the cooper- ative protocols

  • Adaptive semi-soft handoff for cellular IP networks

    Creator:
    Nurvitadhi, Eriko
    Abstract:
    Rapid advances in wireless networking have led to more mobile phones, PDAs, and other digital mobile devices becoming ubiquitously connected to the Internet. As the demand of delay sensitive real-time applications for these portable devices increases, providing seamless connectivity to wireless networks becomes a critical issue. For this reason, a...
    Resource Type:
    Masters Thesis
    Full Text:
    :1 30:1 PDR (Old Path Delay : New Path Delay) Pa ck et lo ss es (+ )o r d up lic at es

  • Network coding for multi-user wireless networks

    Creator:
    Nguyen, Dong Van
    Abstract:
    Until a few years ago, wireless-capable laptops were considered novelties by many. It is now hard to find a laptop or a hand-held computing device that is not wireless-ready. As wireless devices are becoming commodities, they have also become an indispensable part of the modern society. Not surprisingly, research in...
    Resource Type:
    Dissertation
    Full Text:
    by R. Ahlswede et al. [3] as a way to increase the average rate of data dissemination from a source

  • Understanding the ultra-wideband channel within a computer chassis

    Creator:
    Redfield, Stephen J.
    Abstract:
    Recent developments in computing technology have generated a demand for more streamlined and effective test systems. By replacing traditional in-chassis wired interconnects with a broadcast wireless system, fault detection and error susceptibility will drastically improve, input/output capabilities will expand, and routing complexity will decrease. Ultra-wideband impulse radio's (UWB-IR) characteristic multipath-immunity...
    Resource Type:
    Masters Thesis
    Full Text:
    transmitted through the channel of interest and the received signal r(t) is analyzed to determine the change

  • LDPC-VBLAST for wireless communications

    Creator:
    Poocharoen, Panupat
    Abstract:
    Recently, the demand for higher data rates of transmission has increased in many wireless communication applications. Using multi-transmit and multi-receive antennas has been shown to be a solution, since it can increase the channel capacity to accommodate higher transmission rates. Among the popular techniques developed to exploit the use of...
    Resource Type:
    Masters Thesis
    Full Text:
    . Points location ro 0 1 ... 0 1 0 0 ... 0 HLDPC = Lines location 0 1 :" o Assigned '1' to the point L

  • Optimal communications system design for array-based electric generation

    Creator:
    Orozco, Ricardo
    Abstract:
    The world's demand for energy is an ongoing challenge, which has yet to be overcome. The efforts to find clean energy alternatives to fossil fuels have been hampered by the lack of investment in technology and research. Among these clean energy alternatives are ocean waves and wind. Wind power is...
    Resource Type:
    Masters Thesis
    Full Text:
    the figure h(i,j) represents the channel fading coefficients in the various directions and s,r,d are

  • End-to-end network throughput enhancement through physical-layer network coding

    Creator:
    Maeouf, Sofean Ahmed
    Abstract:
    Physical-Layer Network Coding (PNC) is a promising technique that has great potentials for improving the achievable data rates of end-to-end flows through higher packet transmission rates, thereby increasing the overall network throughput. In this thesis, we study the performance of the PNC transmission techniques for unidirectional end-to-end flows in multi-hop...
    Resource Type:
    Masters Thesis
    Full Text:
    BER can be written as follows BERPNC = 1 4 ∫ α2 α1 1√ πNo exp(−(r + 2) 2 No )dr + 1 2 ∫ α1

  • Ensuring quality of service in ad-hoc wireless networks using the concept of active nodes

    Creator:
    Rajogpalan, Santosh
    Abstract:
    The problem of ensuring Quality of Service (QoS) on a TCP/IP based fixed-infrastructure network has been well studied and several working proposals exist. An allied problem is that of ensuring QoS on an ad-hoc wireless network, where the requirements are similar, but the operating conditions are different enough to warrant...
    Resource Type:
    Masters Thesis
    Full Text:
    network on the results: N=20, 1=2, R=1990

  • Implementation and performance analysis of a scalable routing protocol

    Creator:
    Venkatesan, Rudhrakumar
    Abstract:
    Ad Hoc networks are multi-hop wireless networks consisting of mobile hosts. They do not have any pre-existing network infrastructure and are characterized by constantly changing topology, limited battery power and bandwidth. Typical applications of such networks are battlefield networks, medical relief during natural calamities or disasters, conference room networking, and...
    Resource Type:
    Masters Thesis

  • Stretchable architectures for 3rd generation wireless networks

    Creator:
    Lakkavalli, Shashidhar V.
    Abstract:
    Power is a valuable resource. It is invaluable when for mobile devices. Mobile devices, due to their mobility cannot get a continuous source of power and derive their power from a battery contained in them. The main consumer of power in the mobile is its transmitter. With a limited power...
    Resource Type:
    Masters Thesis