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    Performance improvement of dynamic source routing protocol for multimedia services in mobile ad hoc network
    (2006-11-02)
    Taing, Nguon
    ;
    Thipchaksurat, Sakchai
    ;
    Varakulsiripunth, Ruttikorn
    ;
    Ishii, Hiroshi
    All mobile nodes participating in a group communicate with one another in the group through a shared radio link without cable or backbone composes an infrastructureless network, called Mobile Ad hoc Network (MANET). Because network topology may be changed at any time as result of mobility of nodes and the failure of available routes, Quality-ofService (QoS) of real-time multimedia application may have difficulty in satisfying their services. In this paper, we propose a routing scheme for multimedia services called Modified Dynamic Source Routing (MDSR) protocol. The MDSR selects the shortest path by using power level. Our proposed scheme provides lower average delay and mean number of hop path from source to destination than DSR protocol can provide. © 2006 IEEE.
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    Routing scheme for multimedia services in mobile Ad hoc network
    (2005-12-01)
    Taing, Nguon
    ;
    Thipchaksurat, Sakchai
    ;
    Varakulsiripunth, Ruttikorn
    ;
    Ishii, Hiroshi
    All communications in a network made by mobile hosts through a shared radio link without cable or backbone, commonly called Mobile Ad hoc Network (MANET). Since the network topology may change constantly because of mobility of nodes and the available routes may fail many times, Quality-of-Service (QoS) of real-time multimedia application may have difficulty in satisfying their services. In this paper, we propose a Routing Scheme for Multimedia Services, which selects the shortest path by using power level Our proposed scheme provides not only the lower means number of hops path from source node to destination node, but also higher thoughput than the conventional scheme. © 2005 IEEE.
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    Wavelet transform technique in multimedia CDMA systems
    (2002-12-01)
    Kamuang, Settakorn
    ;
    Chomphuphun, Arnan
    ;
    Wongrujira, Krit
    ;
    Noppanakeepong, Suthichai
    In this paper we propose the multimedia communication on direct sequence CDMA system and implement it by using Wavelet technique. It is an analysis tool for time frequency localization. In this paper we choose Morlet as the mother wavelet yielding Gaussian shape in frequency spectrum. Another advantage of Gaussian shape can reduce the sidelobe powers of the frequency spectrum result in efficient frequency bandwidth. The evaluations of the performance are proposed and compare with the conventional CDMA system.