Directional Antennas
Minimizing Detection Probability Routing in Ad Hoc Networks Using Directional Antennas
... batteries-powered antennas cannot recharge ...using directional antennas to reduce power consumption in ad hoc ...As directional antennas can increase spatial use [16], more than one ...
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Performance of AODV, GRP and OLSR Routing Protocols in Adhoc Network with Directional Antennas
... with directional antennas in adhoc ...using antennas intelligently for collision avoidance and spatial reuse ...is directional CSMA/CD mechanism [5], that utilizes a switched beam antenna ...
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Geometrically Based Channel Model for Indoor Radio Propagation with Directional Antennas
... Abstract—A geometrically based channel model is proposed to describe radio propagation in an indoor environment with directional antennas. In conventional geometric channel models (GCMs), distribution of ...
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A Power Efficient MAC Protocol for Wireless Ad hoc Networks that uses Directional Antennas
... with directional antenna requires less number of relay nodes to reach the destination node when compared to a node equipped with omni directional ...using directional antenna can be much less than ...
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Medium Access Control Protocol for Wireless Sensor Networks in Harsh Environments with Directional Antennas
... of directional antennas to the hub node of a wireless sensor network (WSN), whilst retaining an omni-directional antenna on each sensor node, thus enhancing link performance without increasing the ...
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Study on Routing Protocol in Airborne Sea Ad Hoc Networks with Directional Antennas
... a directional routing protocol for airborne-sea ad hoc networks ...(ASNETs). Directional antennas have the potential to provide a fundamental breakthrough in ad hoc network capacity, connectivity, ...
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Directional versus Omni Directional Antennas for UWB Imaging
... use directional antennas for medical applications since it is desirable to focus the power toward the receiver ...[5]-[7]. Antennas with some degree of directionality show better performance for ...
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Improving Wireless TDMA/FDD MAC Performance with Multi-beam Directional Antennas
... using directional antennas has been designed, simulated and compared to a regular TDMA/FDD MAC counterpart employing omni-directional ...omni-directional antennas and communicate ...
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On the delay reduction of wireless ad hoc networks with directional antennas
... A source node S sends data packets to its destination D by multi-hop forwarding those packets along the adja- cent cells lying on its S-D line. Figure 8 shows an example of S-D lines, where the green line indicates a ...
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Survey on Protocols addressing Head of Line Blocking Problem in Wireless Ad Hoc Networks using Directional Antennas
... omnidirectional antennas and omnidirectional transmission this phenomenon will not create any problem but while using directional antennas and directional transmission this may lead to a ...
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Interference-Aware Hybrid MAC protocol for Cognitive Radio Ad-Hoc Networks with Directional Antennas
... with directional antennas has enhanced aggregate throughput when compared with other existing ...addition, directional RTS/CTS and data transmission results in increased spatial ...with ...
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On Wireless Ad Hoc Networks with Directional Antennas: Efficient Collision and Deafness Avoidance Mechanisms
... utilizes directional physical as well as virtual carrier ...of directional antennas is also presented in ...of directional antennas by enabling DD ...
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A Comparative Analysis of Two Different Directional Antennas for WLAN Applications
... patch antennas are preferred over other antennas because of their compatibility to be fit in mobile, aircraft, satellite owing to very small ...different directional antennas are compared ...
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A networking perspective for intelligent utilization of directional antennas in ad hoc wireless networks: The tandem approach
... takes directional transmission explicitly into account [24], most of them can be extended to use the directional capabilities of the nodes for an increased flexibility and precision in ...a ...
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Directional pattern synthesis in circular arrays of directional antennas
... It was shown by Longstaff, Chow and Davies (1) that the far field directional pattern of a continuous circular array in the horizontal plane can be analysed in terms of spatial harmonics[r] ...
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ENERGY SAVING IN WSN EMPLOYING DIRECTED CONNECTIVITY THROUGH ANTENNAS WITH SPECIFIC DIRECTIONAL PATTERNS
... omnidirectional antennas in the middle sections and directional antennas near the walls can save excess energy wasted towards the ...omnidirectional antennas. The third row is special case ...
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Solving the Hidden Terminal problems Using Directional-Antenna Based MAC Protocol for Wireless Adhoc Networks
... n wireless networking [1], the hidden node problem or hidden terminal problem [6] occurs when a node is visible from a wireless access point (AP), but not from other nodes communicating with said AP. This leads to ...
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Monitoring the Delay and Directivity of Antennas in Gigabit WPAN (802.15.3c)
... using antennas, baseline models of directional antenna and isotropic antennas have been developed using the simulator OPNET Modeler TM ...isotropic antennas have good throughput, the maximum ...
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Review and Analysis of a Proposed Concept for Energy Efficiency on UWB MAC in Manet with Directional Antenna
... and antennas play a vital role in achieving the successful transmission of ...of directional antennas in wireless networks can conserve energy due to the skewed transmission towards a specific ...
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IoT Scanning Through Walls Using Wi-Fi
... In this TTW approach sixteen ESP8266-01S microprocessors were used. Additionally, they were coupled in directional antennas that were assembled in the form of an array to improve resolution and transmission ...
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