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2009 Pacific-Asia Conference on Circuits, Communications and Systems

16-17 May 2009

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  • [Front cover]

    Publication Year: 2009, Page(s): C1
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  • [Title page i]

    Publication Year: 2009, Page(s): i
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  • [Title page iii]

    Publication Year: 2009, Page(s): iii
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  • [Copyright notice]

    Publication Year: 2009, Page(s): iv
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  • Table of contents

    Publication Year: 2009, Page(s):v - xviii
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  • Conference Information

    Publication Year: 2009, Page(s):xix - xxi
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  • Embed Geodesic Cycles into Möbius Cubes

    Publication Year: 2009, Page(s):3 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB) | HTML iconHTML

    For two vertices x, y isin V (G), a cycle is called a geodesic cycle with x and y if a shortest path joining x and y lies on the cycle. A graph G is called to be geodesic k-pancyclic if any two vertices x, y on G have such geodesic cycle of length l that 2dG(x, y) + k les l les |V (G)|. In this paper, we show that the n-dimensional Moumlbius cube MQn is geodesic 2-pancyclic for n ges 3. View full abstract»

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  • LDPC-LDGM Based Dirty Paper Coding Techniques for Multicell Cooperative Communication System

    Publication Year: 2009, Page(s):7 - 10
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB) | HTML iconHTML

    The vector dirty paper coding (DPC) can achieve rate region for multicell cooperation system. Conventional DPC implementation approach suffer the capacity loss due to quantization which lead to modulo loss. In this paper, we proposed a vector DPC transmission scheme with non-binary LDPC codes and low density generator matrix based quantizer for multicell processing. And the random coding based pro... View full abstract»

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  • DCT-Based Gabor Transform for Long or Infinite Sequences

    Publication Year: 2009, Page(s):11 - 14
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (291 KB) | HTML iconHTML

    The length of discrete signals could be very long in many real applications. In such case, the existing DCT-based real-valued discrete Gabor transform (RGDT) for finite sequences is no longer adequate. In this paper, the novel DCT-based RGDT for infinite sequences is defined and the biorthogonality relationship between the analysis window and the synthesis window for the novel transform is also pr... View full abstract»

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  • Iterative V-BLAST Detection with UCD Channel Decomposition

    Publication Year: 2009, Page(s):15 - 18
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (281 KB) | HTML iconHTML

    With availability of channel state information (CSI) at the transmitter and receiver, we can use UCD channel decomposition method for obtaining identical channel conditions for all layers in a VBLAST architecture. This leads to better performance than conventional SQRD VBLAST without need to layer ordering priori to detection. In this paper, we use UCD technique for iterative VBLAST detection and ... View full abstract»

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  • An Energy-Based QoS Routing Protocol in Mobile Ad Hoc Network

    Publication Year: 2009, Page(s):19 - 22
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (335 KB) | HTML iconHTML

    The ad hoc network is a non-infrastructure mobile network that consists of many mobile nodes. Since the nodes have a mobility features in ad hoc network, the ability of communication between the nodes is limited by nodespsila power. The power consumption and bandwidth of each mobile node becomes an important issue and needs to be addressed. The paper discusses the energy efficient routing problem ... View full abstract»

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  • An Implementation of Time and Frequency Synchronization for Carrier Interferometry of OFDM in an Underwater Acoustic Channel

    Publication Year: 2009, Page(s):23 - 26
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (314 KB) | HTML iconHTML

    Considering the features of Underwater Acoustic channel and the sensitivity versus synchronization for CI/OFDM system, A time and frequency synchronization method based on Constant Amplitude Zero Auto-Correlation(CAZAC) sequence is presented. The time offset estimation and carrier frequency offset estimation can be achieved simultaneously. The fractional part and integral part of carrier offset es... View full abstract»

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  • Non-Linear Dynamic Texture Analysis and Synthesis Using Constrained Gaussian Process Latent Variable Model

    Publication Year: 2009, Page(s):27 - 30
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (919 KB) | HTML iconHTML

    Linear dynamic system (LDS) has been proposed to model dynamic texture. However, the temporal evolution of dynamic texture is non-linear in general and is not fully captured by the linear model. In this paper, we formulate the dynamic texture learning and synthesis via nonlinear approach. Assuming that dynamic texture is sampled from a low dimensional manifold, the constrained Gaussian process lat... View full abstract»

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  • Modulation Classification Based on Cyclic Spectral Features for Co-Channel Time-Frequency Overlapped Two-Signal

    Publication Year: 2009, Page(s):31 - 34
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (294 KB) | HTML iconHTML

    A modulation classification algorithm based on cyclic spectral features is presented to solve the problems in modulation classification for time-frequency overlapped two-signal in co-channel. Each signalpsilas features from the cyclic spectrum are extracted, and a multi-pole classifier is proposed to classify the time-frequency overlapped signals respectively in the combination of BPSK, QPSK, OQPS... View full abstract»

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  • Secure Routing Algorithm Based on Power-Efficient for Wireless Sensor Networks

    Publication Year: 2009, Page(s):35 - 38
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (290 KB) | HTML iconHTML

    To the problems of threat to routing security and limited energy of the nodes in sensor network, this paper presents a secure routing algorithm based on power efficient (PESR). The algorithms takes energy optimization, improvements of secure routing, and shorten of transmission delay as its design targets. With the multi-pile policy nodes with more energy storages will undertake more tasks of data... View full abstract»

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  • A Heuristic Greedy Optimum Algorithm for Target Coverage in Wireless Sensor Networks

    Publication Year: 2009, Page(s):39 - 42
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (375 KB) | HTML iconHTML

    In order to maximize the network lifetime for target coverage, we propose a heuristic greedy optimum coverage algorithm (HG-OCA). In HG-OCA, we first design a network model in which power supplies of sensor nodes follow a normal distribution. Next, we analyze energy model of target coverage, educe three rules to reduce network scale, present the concept of the key target and the prior coverage of ... View full abstract»

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  • A Novel Multi-User MIMO Scheme in OFDM Systems

    Publication Year: 2009, Page(s):43 - 46
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (309 KB) | HTML iconHTML

    Multi-user MIMO (MU-MIMO) is the technique which used in the scenarios with a large number of users to be served in one cell, and high capacity gains can be achieved by transmitting independent data streams to different users sharing the same time-frequency resources. Because more than two users share the same time-frequency resources in MU-MIMO systems, there is a big problem for the receiver to ... View full abstract»

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  • A Design of 2.6 GHz Auto-Biasing Cascode Class-E PA with Vdd/AM and Vdd /PM Compensations in EER System

    Publication Year: 2009, Page(s):47 - 50
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1027 KB) | HTML iconHTML

    An auto-biasing cascode class-E PA which can compensate the Vdd/AM and Vdd/PM distortion resulting from supply modulation has been proposed. The output voltage of auto-biasing control circuit is generated and varied linearly with PApsilas supply voltage so that the cascode transistor is degenerated into a resistance and the PApsilas nonlinear distortion can be compensated. The simulation result sh... View full abstract»

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  • Notice of Retraction
    Innovation Practice Training Model of College Students in Background of Knowledge Economy

    Publication Year: 2009, Page(s):51 - 53
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    Notice of Retraction

    After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles.

    We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

    The presenting author of this paper has the option ... View full abstract»

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  • A Neural Data Fusion Algorithm in Wireless Sensor Network

    Publication Year: 2009, Page(s):54 - 57
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (278 KB) | HTML iconHTML

    Data fusion technology is widely utilized in energy constraint wireless sensor network (WSN) to reduce the amount of messages exchanged between sensor nodes. However, there are many similarities between wireless sensor network and artificial neural network. In this paper we present a neural data fusion algorithm based on PCA to classify the states of environment. The results attained by experiment... View full abstract»

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  • Block Precoding Based ICI Mitigation Technique for OFDM System

    Publication Year: 2009, Page(s):58 - 61
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (258 KB) | HTML iconHTML

    In order to mitigate the inter-carrier interference (ICI)which severely degrades the performance of Orthogonal Frequency Division Multiplexing (OFDM) system, an improved zero-forcing equalization method based on precoding is proposed. By choosing the appropriate precoders, the system can achieve maximum multipath diversity gain and Doppler diversity gain. A block precoding method has also been app... View full abstract»

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  • Limited Feedback Technique of MU-MISO System over Rician Fading Channels

    Publication Year: 2009, Page(s):62 - 65
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (313 KB) | HTML iconHTML

    A new limited feedback scheme over Rician channels is proposed in multi-antenna multiuser downlink systems. By introducing angle distance distribution in the Rician channel, the scheme designs the quantization codebook which is closer to the channel direction for each user. Moreover, the proposed scheme can adapt the number of feedback bits to the channel condition without increasing the quantized... View full abstract»

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  • A Low Complexity Peak Estimation Scheme for PAPR Reduction in OFDM Systems

    Publication Year: 2009, Page(s):66 - 69
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (294 KB) | HTML iconHTML

    This paper proposes a low complexity peak-to-average power ratio estimation scheme for OFDM systems. The new scheme introduces a non-equal-distance estimation based on triangle interpolation, which approximates higher oversampling samples by lower oversampling samples. Simulation shows the new scheme can achieve a good approximating to signal distribution of the real over-sampled OFDM signal. Furt... View full abstract»

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  • GPS Rectangular Planar Array Design Based on Sidelobe Constraints and Quadratic Null Constraints

    Publication Year: 2009, Page(s):70 - 73
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (534 KB) | HTML iconHTML

    In order to suppress mass low power jamming and some high power jamming in GPS receiver; GPS planar array combined sidelobe constraints and quadratic null constraints is designed; sidelobe constraints can suppress low power jamming, quadratic null constraints can suppress high power jamming; computer simulation results show that this design can restrain concealed jamming from sidelobe at controlle... View full abstract»

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  • A Fast Reroute Mechanism for RIP Protocol

    Publication Year: 2009, Page(s):74 - 77
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (355 KB) | HTML iconHTML

    Aiming at the RIP (routing information protocol) canpsilat dealing with network failures effectively, causing significant forwarding discontinuity after a failure. The drawback with this protocol is that it need to trade off routing stability and forwarding continuity. To improve failure resiliency without jeopardizing routing stability, we propose a fast local rerouting based on RIP called FR-RIP... View full abstract»

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