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With the development of MEMS (Micro-electromechanical Systems), the wireless sensor networks (WSNs) have become an important communicating method for intelligent transportation application. Mathematics modeling, as an effective quantitative analysis method, is very important for conducting intelligent transportation performance research when WSNs are applied. Based on the channel contention mechanism...
The Enhanced Distributed Channel Access (EDCA) mechanism has been adopted by media access control (MAC) layer of IEEE 802.11p to provide contention-based differentiated channel access for packets with different priorities. To analyze the performance of EDCA mechanism, the two-dimensional Markov chain model with the different contention windows(CW) and the internal collision and the frozen mechanism,...
PoP is a potential solution to high-speed memory packaging. For PoP package, warpage is known as a concern over package stacking and SMT yield. The PoP package under current study has these features such as fine pitch which is 0.5 mm for both top and bottom, small ball size and that most solder balls are located at the packagepsilas two longer edges. Therefore the solder joint reliability (SJR) in...
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