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—Channel response and noise in the in-home power-line channel are time varying, and show periodic patterns since electric devices, which are major noise sources, synchronously run with the ac-line cycle. Using the relatively stable channel characteristic of the power line, orthogonal frequency-division multiple access (OFDMA) schemes in power-line(More)
In wireless local area network (WLAN) with common control channel (CCC), where the spectrum bandwidth is divided into two separate channels for access control and data transmission, concurrent transmissions of control and data frames can improve the spectrum efficiency by pipelining data transmissions. However, the state-of-the-art MAC schemes cannot fully(More)
—In this paper, we propose a simple approach to using longer Hello messages to enhance network performance as an alternative of using link quality based routing metrics in MANET. In this proposal, routing nodes use longer routing messages to filter out the information from neighboring nodes about low-quality links. For doing so, we modified the structure of(More)
  • Daeho Kang, ∙Sung-Guk Yoon, ∙Saewoong Bahk
  • 2010
전력선 채널은 임펄스 잡음(impulsive noise)과 주기정상성 잡음(cyclo-stationary noise)의 독특한 잡음 특성과 함께 임피던스 부정합(impedance mismatching)에 의한 주파수 선택적 페이딩(frequency selective fading)의 특성 The power line channel has two types of unique noises: impulsive noise and cyclo-stationary noise. In addition it has a frequency selective fading characteristic due to the impedance mismatching in(More)
In this paper, we propose distributed Dynamic Route Change Algorithm (DRCA) which dynamically finds a better (i.e., shorter) route to the destination using hello message of neighbor in ad-hoc on-demand distance vector (AODV) routing protocol. We first change the hello message format of AODV so that it can contain the list of recently forwarded destination,(More)
In this paper, we propose a scalable broadcast protocol, named Subcarrier-level Tone-signal based Broadcast (ST-BCAST), that disseminates a packet over OFDM-based wireless multi-hop networks in an efficient and reliable manner. Exploiting collision-resilient tone-signals and receiver-triggered forwarding decision/cancellation, ST-BCAST achieves both high(More)
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