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Train accidents continuously occur due to a variety of causes (carelessness by the conductor, broken wheels, disaster during train movements, etc.). To prevent train-related accidents in advance, it is considered the monitoring train systems with wireless sensor networks (WSNs). In this paper, we propose an efficient algorithm to dynamically configure WSNs-based trains for relaying sensing data via...
In this paper, a novel prefix-based patching algorithm named DP2 (Dynamic Prefix-based Patching algorithm) is proposed for mobile IPTV service in the WiBro system. Proposed algorithm increase the resource utilization of wireless bandwidth and server. It uses the prefix caching in proxy server to batch those requests that demand the same video. This algorithm just requires the mobile terminal can receive...
We introduce space-time block coding (STBC) technique with pre-equalization and new block code design denoted by transmit equalization code (TEC), especially for four transmit antennas case. Proposed code is designed to eliminate interferences between transmit antennas and a receive antenna with great transmission rate. Transmit symbol which is encoded by the new code is equalized at transmitter....
Most electric power companies implement an automatic meter reading (AMR) system operating at quarter-hour intervals. The companies install the system (an electric meter) at the homes of their high-voltage (HV) customers who consume a significant amount of power each month. When first introduced to the industry, the AMR system simply measured customers' peak power and billed them. Recent studies are...
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