Studies in the Area of Wireless Communications and Networks Reported from University of Macau
2012 AUG 8 (VerticalNews) -- By a News Reporter-Staff News Editor at Telecommunications Weekly -- Investigators discuss new findings in Wireless Communications and Networks. According to news reporting originating in Macao, People's Republic of China, by VerticalNews journalists, research stated, "In this paper, we investigate a large cooperative wireless network with relay nodes, in which cooperation is enabled through physical-layer network coding (PLNC). Specifically, we study the impact of the relay selection on the network capacity with power constraints in two scenarios."
The news reporters obtained a quote from the research from the University of Macau, "First, we consider the basic PLNC model (a.k.a., the ARB model), in which one pair of source nodes (A, B) exchange messages via a selected relay node ®. Given the power constraint, we derive the optimal relay selection and power allocation that maximize the sum capacity, defined as the summation of the capacity for two source-destination channels. Based on results obtained above, we then consider a more general scenario with multiple pairs of source nodes. Assuming the constant power constraint, we derive the upper bound of the minimal sum capacity of any source pair. The optimal power allocation among multiple source pairs is also derived."
According to the news reporters, the researchers concluded: "To validate these theoretical results, we also provide two relay selection strategies: a modified optimal relay assignment strategy and a novel middle point strategy for maximizing the minimal sum capacity of any source pair."
For more information on this research see: On the relay selection for cooperative wireless networks with physical-layer network coding. Wireless Networks, 2012;18(6):653-665. Wireless Networks can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Wireless Networks - www.springerlink.com/content/1022-0038/)
Our news correspondents report that additional information may be obtained by contacting Z.Y. Zheng, Univ Macau, Fac Sci & Technol, Dept. of Comp & Informat Sci, Macao, People's Republic of China.
Keywords for this news article include: Asia, Macao, Wireless Network, Wireless Technology, People's Republic of China, Wireless Communications and Networks
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