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Because connectivity usually can not be guaranteed, delay performance is mostly poor for opportunistic networks. And network partition is the regular phenomenon for multi-hop wireless networks although the source node in partition district can transmit information by mobile node. Then the delay performance based on network coding is studied for the above network environment and an efficient network...
Combined multi-hop routing with cooperative communication technologies, a simple cooperative multiple-input-single-output (MISO) minimum energy relay scheme is proposed by the cross-layer design to jointly improve the energy efficiency, and end-to-end (E2E) QoS provisioning for wireless sensor networks (WSNs). Under the ideal case, the energy efficiency of the protocol and Joint Optimization are analyzed...
The disc coverage model is usually used to describe the communication range of node in wireless sensor network (WSN). After the cooperative communication techniques has been introduced into WSN, not only the communication performance but also communication range has changed. Nodes in the same cooperative team can be viewed as a virtual node. This paper discusses the virtual node's communication range...
In high SNR regime, diversity order is a performance metric which indicates how fast the error probability decays with SNR. This paper study the cooperative behavior of cooperative diversity (CD) networks based on amplify-and-forward (AF) protocol from the point of view of diversity order and explain the mechanism of obtained diversity order of several types of CD networks. The method we employ is...
In the wireless fading environment, channel diversity is an effective method to improve the performance of wireless communication, while there are no uniform criteria to quantify the performance of channel diversity. Generally, channel diversity can achieve the benefits of energy gain and diversity gain, a novel method using energy order and diversity order to quantify the performance of channel diversity...
A new algorithm for tracking time-varying fading channels in impulse noise environment is proposed in this paper, which uses the Kalman filter based on Clarke's model. However, the Kalman filter is known to be sensitive to impulse noise. In this paper, we investigate into how to restrain the adverse effect of impulse noise. The impulsive noise is modeled as a two-term Gaussian mixture distribution...
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