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The millimeter-wave (mmWave) bands, roughly referred to 30-300 GHz, have been widely recognized as a promising candidate for dense deployment of small- cells backhaul network. The dense small-cell deployment produces a huge amount of backhaul traffic, and directional communication poses a significant challenge. In this paper, we propose a dynamic frame reconfiguration scheme which provides greater...
Recent studies have experimentally shown the gains of full-duplex radios. However, due to its relatively higher cost and complexity, we can envision a more practical step in the network evolution is to have a full-duplex access point (AP) but keep the clients half-duplex. Unfortunately, the full-duplex gains can hardly be extracted in practice as the uplink transmission from a half-duplex client introduces...
In this paper, we propose the concept of cognitive radio access network (Cognitive RAN) as the guideline for 5G M2M network design. A Cognitive RAN proactively investigates RAN status and terminal requirement, and then adaptively configures radio resources to enhance system performance. As an example of Cognitive RAN, we propose a random access load estimation method to perform RAN overload resolution...
A host can simultaneously transmit or receipt multiple packets on different beams with smart antenna (or Multi-beam antenna) systems. Hence, Smart antenna system can have spatial reuse and reduced power consumption. However, the host with smart antenna cannot transmit to its neighboring by one beam and receive from other neighboring by other beam simultaneously. For multi-hop transmissions, an efficient...
In underwater acoustic networks, a transmission is done by means of acoustic wave. However, acoustic transmissions suffer long propagation delay and high bit error rate, especially for real time applications. Since speed of sound and underwater noises are varied with water depth, therefore, this paper takes sound speed and underwater noises into account and proposes a channel-aware depth-adaptive...
This paper introduces a game theoretic approach to find the stable partition in a multi-node two-way relay cooperative network. In two-way relaying, since the direct link between nodes in a pair does not exist, every node is a transceiver and a relying node for other communicating pairs at the same time. Thus, the question of how to form a partition of nodes to improve the system performance in such...
This paper presents a development of mobile load monitoring and control system (MLMCS) in application to remote load management. MLMCS consists of client monitoring and control interface (CMCI) on mobile phone screen and wireless ARM-based automatic meter reading and control system (WAMRCS). To provide a cost-effective, wireless, always-connected, two-way data link between supervisor and WAMRCS, the...
Vehicular ad hoc network protocol with hybrid relay architecture is proposed for improving the success ratio. Access gateway estimation and a probability table based on the routing information are developed and applied in the backhaul-connected infrastructure network in order to estimate the access gateway region where the destination node locates and reduce the transmission flooding in wireless and...
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