83 results for “communication channel”

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Research ArticleOpen accessAll words, across the recordThe Performance of a Dual Header Pulse Interval Modulation in the Presence of Artificial Light Interferences in an Indoor Optical Wireless Communications Channel with Wavelet DenoisingS. Rajbhandari, Z. Ghassemlooy, M. AngelovaProblem statement: Similar to other baseband modulation schemes, the performance of the Dual Header Pulse Interval Modulation (DH-PIM) is adversely affected by Artificial Light Interferences (ALI) in an indoor Optical Wireless Communications (OWC) channel. Approach: The Discrete Wavelet Transform (DWT) based denoising is studied for reducing the effect of the ALI. Computer simulation is carried out to demonstrate the effectiveness … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 4 · 18 Jan 2012 · 7,780 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordAgriculture Communication in Malaysia: The Current SituationMd. Salleh Hassan, Hayrol Azril Mohamed Shaffril, Bahaman Abu Samah et al.Problem statement: Without doubt, it is important to expose and educate farmers with the current and updated agriculture information. To implement this, the related agriculture agencies in Malaysia should consider the best channels for them in spreading the needed valuable agriculture information to the farmers. The question that can be raised now, can the mass media be the right channel … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 3 · 30 Sep 2010 · 9,393 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordComparative Study between Various Topological Models of Base Stations in Cellular Mobile Radio CommunicationMohammed F. AlhunaityIn this paper, we analyze the different parameters of quality for the network models of base stations (BS) when the service messages have not a delay. Also, we compare between four topologies star, ring, radial ring and fully connected using identical quality of user service and conditional cost of one Erlang. Our results have been obtained for different probabilities of … …American Journal of Applied Sciences, Vol. 3, Issue 2 · 28 Feb 2006 · 6,876 accessesView PDF Cite