2008 10th International Conference on Advanced Communication Technology

17-20 Feb. 2008

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  • [Front cover]

    Publication Year: 2008, Page(s): C1
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  • The 10th International Conference on Advanced Communication Technology

    Publication Year: 2008, Page(s): nil1
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  • [Copyright notice]

    Publication Year: 2008, Page(s): nil2
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  • Message from the ICACT2008 General and Organizing Chairs!

    Publication Year: 2008, Page(s): i
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  • Message from the Technical Program Committee Chair

    Publication Year: 2008, Page(s): ii
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  • [Breaker page]

    Publication Year: 2008, Page(s): iii
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  • Committee

    Publication Year: 2008, Page(s): iii
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  • Board of reviewer

    Publication Year: 2008, Page(s):iv - x
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  • Session overview

    Publication Year: 2008, Page(s):xi - xiii
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  • Table of contents

    Publication Year: 2008, Page(s):xi - xlix
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  • [Breaker page]

    Publication Year: 2008, Page(s): 1487
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  • An Efficient Subband Method for Wideband Adaptive Beamforming

    Publication Year: 2008, Page(s):1489 - 1492
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (2949 KB) | HTML iconHTML

    An efficient subband adaptive beamformer with perfect reconstruction general parameter filter banks (GPFB) for wideband array antenna is proposed in this paper, which is used to enhance performance of suppressing the interference and accelerate convergence speed of weights. Instead of the conventional FFT filter banks, GPFB are utilized to partition the frequency band into several subbands without... View full abstract»

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  • A Novel Full-Diversity Full-Rate Transmit Beamforming Systems Combined with V-BLAST over Correlated Fading Channels

    Publication Year: 2008, Page(s):1493 - 1495
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (398 KB) | HTML iconHTML

    In this paper, we propose a novel transmit beamforming algorithm combined with vertical Bell laboratories layered space-time (V-BLAST) over correlated fading channels. Using the antenna groups at the transmitter, not only spatial multiplexing gain but also beamforming gain can be achieved. We encode the transmit signals in order to enhance the diversity gain compared with conventional V-BLAST syst... View full abstract»

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  • Performance of Adaptive Modulation with Multipath Diversity Technique

    Publication Year: 2008, Page(s):1496 - 1499
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (783 KB) | HTML iconHTML

    Adaptive modulation techniques are becoming very important for mobile communication systems due to dynamic characteristics of the medium. Diversity is another technique which further improves the performance of mobile communication system. In this paper the performance of adaptive M-QAM modulation technique has been evaluated in term of BER with diversity. A comparison of different values of the c... View full abstract»

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  • Outage Performance of Cooperative DF Relaying in Rayleigh Fading with Multiple Receive Antennas at Destination

    Publication Year: 2008, Page(s):1500 - 1503
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (1023 KB) | HTML iconHTML

    We address the outage performance in the Rayleigh fading for the decode-and-forward relaying with multiple receive antennas at the destination. A closed-form expression for the outage probability is derived. Simulation results demonstrate our theoretical solutions. View full abstract»

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  • Rain Effects on SDH-based Networks Using Protection Switching

    Publication Year: 2008, Page(s):1504 - 1506
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (570 KB) | HTML iconHTML

    In this paper, radio relay systems for Synchronous Digital Hierarchy (SDH)-based networks with path type Synchronous transfer Module of order 0 (STM-0) without protection switching and with 1+1 switching configuration as said in Recommendation ITU-R F.750 are considered. Byte Interleaved Parity (BIP) codes are used for error monitoring. Rain causes fading and the blocks are received in errors beca... View full abstract»

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  • [Breaker page]

    Publication Year: 2008, Page(s): 1507
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  • A Cross-Layer Transmission on Video telephony over WCDMA Network

    Publication Year: 2008, Page(s):1509 - 1512
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (3267 KB) | HTML iconHTML

    Video telephony is a representative service in 3G mobile network. There have been many efforts to improve quality of video telephony service in different fields. In Korea, leading mobile service providers, SKTelecom and KTF service the WCDMA network and more than four million people are using it. This paper proposes an error minimizing algorithm using cross-layer adaptation between physical layer ... View full abstract»

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  • A Systematic Optimized Comparison Algorithm for LDPC Decoder

    Publication Year: 2008, Page(s):1513 - 1516
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (2596 KB) | HTML iconHTML

    This paper proposes a novel systematic optimized comparison algorithm for LDPC codes with arbitrary code lengths. Based on the presented algorithm, we also design a corresponding decoder architecture which has a short comparison delay time of lceillog2(n - 1)rceil and a very low comparator complexity of ntimeslceillog2(n - 1)rceil, where n is the input number to CNU. Besides,... View full abstract»

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  • Advanced Handoff Mechanism for Delay Sensitive Applications in IEEE 802.11 Wireless LAN

    Publication Year: 2008, Page(s):1517 - 1520
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (2855 KB) | HTML iconHTML

    When a Mobile Host (MH) moves out of the range of its current Basic Service Set (BSS), a request for handoff procedure will occur and then some delay associated with the handoff procedure, handoff delay, takes place. However, for the emerging multimedia streaming applications, delay sensitive applications, attention should be paid to the amount of this delay. In order to a fuller understanding of ... View full abstract»

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  • A Scheduling Algorithm Based on Channel State for VoIP Services in IEEE Std 802.16e System

    Publication Year: 2008, Page(s):1521 - 1525
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (264 KB) | HTML iconHTML

    The voice-over-Internet protocol (VoIP) has attracted a great deal of attention in the field of wireless mobile networks. In this paper, we propose an improved ertPS scheduling algorithm for VoIP services in IEEE Std 802.16e system. It can solve both the problems waste of uplink resources caused by the UGS algorithm as well as MAC overhead and access delay caused by the rtPS algorithm, it also ide... View full abstract»

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  • Space-Time Block Coding and Beamforming for MC-CDMA Transmission

    Publication Year: 2008, Page(s):1526 - 1531
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (4395 KB) | HTML iconHTML

    This paper presents a MIMO adaptive beamforming in the MC-CDMA system. At the transmitter, a space-time block coding is concatenated to MC-CDMA modulation. At the receiver, an adaptive GSC beamformer is to filter the desired user and suppress interferences by beamspace processing. Combined with the space-time block coding, the smart antenna forms multi-mainbeams toward the desired user. The system... View full abstract»

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  • [Breaker page]

    Publication Year: 2008, Page(s): 1533
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  • A Mechanism for Resource Control and Functional Architecture of Overlay Multicast for IPTV Service in NGN

    Publication Year: 2008, Page(s):1535 - 1538
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (1519 KB) | HTML iconHTML

    Within the NGN architecture, the resource and admission control functions (RACF) act as the arbitrator between service control functions and transport functions for QoS related transport resource control within access and core networks. The decision is based on transport subscription information, SLAs, network policy rules, service priority and transport resource status and utilization information... View full abstract»

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  • TCP Performance Analysis and Improvement in FMIPv6

    Publication Year: 2008, Page(s):1539 - 1543
    IEEE is not the copyright holder of this material | Click to expandAbstract |PDF file iconPDF (689 KB) | HTML iconHTML

    TCP is a popular Internet protocol for reliable end-to-end data delivery. However, the protocol is designed based on wired link, so it is not suitable for mobile network. The main problem is that the frequent handover of mobile nodes may cause poor TCP performance. In order to eliminate the inefficiency of TCP in mobile environment, a modified TCP scheme for improving its performance, named as MTC... View full abstract»

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