Multimedia communication in Wireless Sensor Networks

Joint Channel Estimation and Decoding with Low-Complexity Iterative Structures in Time-Varying Fading Channels Yapici, Yavuz; Yılmaz, Ayşen (2009-09-16) A low-complexity iterative channel estimation (ICE) algorithm is proposed with the promise of improved error performance. The new algorithm operates the LMS filter both in the forward and the backward directions along a block. The feedback from the decoder to the estimator is in the form of soft decisions. The pilot symbol assisted modulation (PSAM) is used as the transmission technique. The effect of code choice on various ICE algorithms is also explored by considering the blockwise concatenated codes init...
IMPURITIES IN NI3FE MAGNETIC-ALLOYS MATYSINA, ZA; Mehrabov, Amdulla; BABAEV, ZM; ZAGINAICHENKO, SY (1987-01-01) Abstract - The sensing coverage area of surveillance wireless sensor networks, which is determined by applying the Neyman-Pearson detection rule, is considered. Using a graph model for the perimeter, the weakest breach path is found through Dijkstra's shortest path algorithm. The breach probability is a critical parameter for assessing the required number of sensor nodes and the surveillance performance of the network. Analysis indicates that for the Neyman-Pearson detection model, the most significant para...
A Novel Link Quality Assessment Method for Mobile Multi-Rate Multi-Hop Wireless Networks Zhou, Jinglong; Jacobsson, Martin; Onur, Ertan; Niemegeers, Ignas (2009-01-01) Accurate and fast wireless link quality assessment (LQA) for wireless channels would bring huge benefits for mobile multi-hop and multi-rate wireless ad hoc and sensor networks in the form of improved end-to-end performance. In this paper, we propose a novel LQA method based on cross-layer information. The method is implemented in a real test-bed, which is based on IEEE 802.11b/g, and achieved a significant LQA improvement up to 50% in mobile scenarios without introducing overhead. The effectiveness of accu...
Special issue for COMPSE 2016 First EAI international Conference on computer science and Engineering, November 11-12, 2016, Penang, Malaysia Vasant, Pandian; Weber, Gerhard Wilhelm; Le, Vinh T. (2018-06-01)
Telecommunications, liberalization, and the growth of the internet in Turkey Wolcott, Peter; Çağıltay, Kürşat (2001-04-01) The privatization and liberalization of telecommunications services have been debated and pursued with varying speed and success by countries throughout the world. In Turkey, efforts to privatize Turk Telekom and liberalize the telecommunications regime have not yet been successful, At the same time, the Internet has experienced dramatic growth. While the experience of Turkey illustrates that formal liberalization of basic telecommunications services is not a necessary condition for the growth of a dynamic ...

Citation Formats

O. B. Akan, “Multimedia communication in Wireless Sensor Networks,” 2006, p. 4, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64060.