National Kaohsiung University of Applied Sciences

Displaying 1-7 of 7 results

  • White Papers // Jan 2013

    Adaptive Coding and Modulation with LDPC Codes and MMSE SNR Estimation for Mobile Wimax

    Adaptive Coding and Modulation (ACM) is a technique to improve the performance of wireless communication system by matching of the modulation, coding and other signal parameters to the state of channel. Recently, ACM has gained attentions of almost all future communication systems, especially Orthogonal Frequency Division Multiplexing (OFDM) systems. In...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Aug 2012

    The Correlation and Eigenanalysis Models on Amplitude-Locked Loop Embedded Security Systems

    In this paper, the authors investigate the utility of correlation and eigenanalysis models for analyzing the performance of Frequency Modulation (FM) system formed by combining Phase-Locked Loop (PLL) and Amplitude-Locked Loop (ALL) models using the Least-Mean-Square (LMS) algorithm in the presence of Co-Channel Interferences (CCI) and Additive White Gaussian Noise...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Jul 2012

    An Efficient Transcoding Scheme for G.729 and G.723.1 Speech Codecs: Interoperability Over the Internet

    In this paper, the authors propose an efficient conversion algorithm for G.729 and G.723.1 speech codecs to reduce computational complexity of the communications between the G.729 and G.723.1 speech codecs. The proposed transcoding method incorporates four processes: Line Spectral Pair (LSP) interpolation, pitch conversion, fast adaptive-codebook search, and fast fixed-codebook...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Jun 2011

    An Intelligent TCP Vegas to Support Long-Distance High Speed Networks

    In this paper, an Intelligent TCP Vegas (iTCP-Vegas) is proposed to improve the throughput of long-distance high-speed TCP connections. Large Round Tip Time (RTT) of packets in 1ong-distance networks is a problem to cause the performance degradation of original TCP connections. Although the RTT-based TCP has been recognized to benefit...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Mar 2011

    The Improvement of All-Digital Amplitude-Locked Loop Separation Analysis Combined MIMO System

    In this paper, the authors combine the ADPLL and the All-Digital Amplitude-Locked Loop (ADALL) system structure for modulation signals of the separation co-channel transmission system. It is demonstrated co-channel separation signals from FM system with the results of simulation experiments. The Least Mean Square (LMS) theory is introduced more efficiently...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Apr 2009

    The Multiple Path Protection of DWDM Backbone Optical Networks

    Primary transmission protection technology is based on the characteristics of SONET/SDH protection mechanism which provides two fiber path rings. A serious problem may arise in the architecture when two fiber links are simultaneously broken. Mesh protection networks can support many protection paths to address above issue, but the key components...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Nov 2008

    Heterogeneous Wireless Networks Integration RFID and Face Recognition for Technical and Vocational Education and Training on ARM and Windows CE

    This paper presents a technique of mobile platform learning for relating paper maps and electronic information resources using Radio Frequency Identification (RFID) and face recognition on the Intel XScale PXA270 CPU target ARM system, mobile device and Heterogeneous Wireless Networks (HWN) technology. The system combining paper maps with electronic guide...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Nov 2008

    Heterogeneous Wireless Networks Integration RFID and Face Recognition for Technical and Vocational Education and Training on ARM and Windows CE

    This paper presents a technique of mobile platform learning for relating paper maps and electronic information resources using Radio Frequency Identification (RFID) and face recognition on the Intel XScale PXA270 CPU target ARM system, mobile device and Heterogeneous Wireless Networks (HWN) technology. The system combining paper maps with electronic guide...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Apr 2009

    The Multiple Path Protection of DWDM Backbone Optical Networks

    Primary transmission protection technology is based on the characteristics of SONET/SDH protection mechanism which provides two fiber path rings. A serious problem may arise in the architecture when two fiber links are simultaneously broken. Mesh protection networks can support many protection paths to address above issue, but the key components...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Aug 2012

    The Correlation and Eigenanalysis Models on Amplitude-Locked Loop Embedded Security Systems

    In this paper, the authors investigate the utility of correlation and eigenanalysis models for analyzing the performance of Frequency Modulation (FM) system formed by combining Phase-Locked Loop (PLL) and Amplitude-Locked Loop (ALL) models using the Least-Mean-Square (LMS) algorithm in the presence of Co-Channel Interferences (CCI) and Additive White Gaussian Noise...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Jul 2012

    An Efficient Transcoding Scheme for G.729 and G.723.1 Speech Codecs: Interoperability Over the Internet

    In this paper, the authors propose an efficient conversion algorithm for G.729 and G.723.1 speech codecs to reduce computational complexity of the communications between the G.729 and G.723.1 speech codecs. The proposed transcoding method incorporates four processes: Line Spectral Pair (LSP) interpolation, pitch conversion, fast adaptive-codebook search, and fast fixed-codebook...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Jun 2011

    An Intelligent TCP Vegas to Support Long-Distance High Speed Networks

    In this paper, an Intelligent TCP Vegas (iTCP-Vegas) is proposed to improve the throughput of long-distance high-speed TCP connections. Large Round Tip Time (RTT) of packets in 1ong-distance networks is a problem to cause the performance degradation of original TCP connections. Although the RTT-based TCP has been recognized to benefit...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Mar 2011

    The Improvement of All-Digital Amplitude-Locked Loop Separation Analysis Combined MIMO System

    In this paper, the authors combine the ADPLL and the All-Digital Amplitude-Locked Loop (ADALL) system structure for modulation signals of the separation co-channel transmission system. It is demonstrated co-channel separation signals from FM system with the results of simulation experiments. The Least Mean Square (LMS) theory is introduced more efficiently...

    Provided By National Kaohsiung University of Applied Sciences

  • White Papers // Jan 2013

    Adaptive Coding and Modulation with LDPC Codes and MMSE SNR Estimation for Mobile Wimax

    Adaptive Coding and Modulation (ACM) is a technique to improve the performance of wireless communication system by matching of the modulation, coding and other signal parameters to the state of channel. Recently, ACM has gained attentions of almost all future communication systems, especially Orthogonal Frequency Division Multiplexing (OFDM) systems. In...

    Provided By National Kaohsiung University of Applied Sciences