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[Author] Jae-Sung ROH(2hit)

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  • Effects of Impulsive Noise and Self Co-channel Interference on the Bluetooth Scatternet

    Do-Gyun KIM  Jae-Sung ROH  Sung-Joon CHO  Jung-Sun KIM  

     
    LETTER

      Vol:
    E85-B No:10
      Page(s):
    2198-2202

    The objective of this paper is to evaluate the impacts of impulsive class-A noise, co-channel interference due to other piconet, Rician fading on the packet error rate (PER), and throughput performance in the Bluetooth scatternet. Simulation results illustrate the significant difference in performance between synchronous and asynchronous Bluetooth systems. The paper also provides the insights on how to design Bluetooth scatternet for minimal PER and maximum throughput performance.

  • Multi-Slot Segmentation Scheme for WAP over Bluetooth

    Il-Young MOON  Jae-Sung ROH  Sung-Joon CHO  

     
    LETTER

      Vol:
    E85-B No:10
      Page(s):
    2203-2207

    In this paper, we have analyzed transmission time for WAP (Wireless Application Protocol) over Bluetooth using a multi-slot segmentation scheme. In order for SAR to improve the transfer capability, the transmission of messages have been simulated using a fragmentation scheme that begins with the total package and incremental fragmentation for each layer using the WTP (Wireless Transaction Protocol) to define the resultant packet size and the level of fragmentation for each proceeding layer. The data is divided into individual packets at the baseband level. This scheme decreases transmission time of L2CAP (Logical Link Control And Adaptation Protocol) baseband packets by sending packets that span multiple slots. From the results, we were able to obtain packet transmission time and optimal WTP packet size for WAP over Bluetooth in a Rician fading channel.

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