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A joint multiuser detection (MUD) scheme for wireless sensor networks (WSNs) is proposed to suppress multiple access interference (MAI) caused by a large number of sensor nodes. In WSNs, waveform division multiple access ultra-wideband (WDMA-UWB) technology is well suited for robust communications. Multiple sensor nodes are allowed to transmit modulated signals by sharing the same time periods and...
Internet of things (IoT) is expanding its outreach to almost every aspect of our daily life. By utilizing network coding in IoT, the IoT energy consumption can be reduced. Thus it is worthwhile studying and improving the applications in IoT, where network coding is incorporated. In this paper, we optimize the performance of network coding-based communication and reliable storage in two important components...
Deployment of wireless sensor networks on 3D complex surface is an important and fundamental issue to be solved. The existing studies focus on the plane coverage and 3D coverage under ideal conditions. An important flaw of their algorithms is poor in flexibility and operability, and not considering the economic cost factor of nodes. To this end, this article presents an elevation map based an intelligence...
In wireless sensor networks (WSNs) with mobile sinks, some stationary sensor nodes, known as network collection points (NCPs), can communicate with mobile sinks to collect sensed data. Most existing works on mobile WSNs assume that mobile sinks directly communicate with NCPs via point-to-point links. Consequently, recent advances in cooperative communications, which are more energy-efficient than...
Cross-layer design, by way of joint optimizing the overall network layers in wireless sensor networks, provides an efficient alternative to traditional layered protocol architectures. This paper provides an introduction and comparison of three typical cross-layer frameworks from several aspects such as the targeted problems, major features and advantages, special functionalities, as well as possible...
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