'Omni directional antennas' diaporamas de présentation

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Using Directional Antennas in Ad Hoc Networks (UDAAN)

Using Directional Antennas in Ad Hoc Networks (UDAAN)

Using Directional Antennas in Ad Hoc Networks (UDAAN). Nitin H. Vaidya University of Illinois at Urbana-Champaign Joint work with. Romit Roy Choudhury Xue Yang University of Illinois. Ram Ramanathan BBN Technologies. Broad Theme. Impact of physical layer mechanisms on upper layers

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931 views • 92 slides
RF Signal and Antenna

RF Signal and Antenna

RF Signal and Antenna. Dr. Tahseen Al-Doori. Objectives. Active and Passive Gain Azimuth and Elevation Chart Beamwidth Antenna Types Visual line of sight RF line of sight Fresnel Zone. Antenna Polarization Antenna Diversity Multi-Input-Multi-Output (MIMO).

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1.08k views • 74 slides
RF Signal and Antenna

RF Signal and Antenna

RF Signal and Antenna. Dr. Tahseen Al-Doori. Objectives. Active and Passive Gain Azimuth and Elevation Chart Beamwidth Antenna Types Visual line of sight RF line of sight Fresnel Zone. Antenna Polarization Antenna Diversity Multi-Input-Multi-Output (MIMO).

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986 views • 74 slides
Chapter 4-Radio Frequency signal and Antenna Concepts

Chapter 4-Radio Frequency signal and Antenna Concepts

Chapter 4-Radio Frequency signal and Antenna Concepts. Active and Passive Gain Azimuth and elevation charts (antenna radiation envelopes) Interpreting polar charts Beamwidth Antenna types Omnidirectional antennas Semidirectional antennas Highly directional antennas Phased array antennas

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916 views • 60 slides
Architecture and Evaluation of an Unplanned 802.11b Mesh Network

Architecture and Evaluation of an Unplanned 802.11b Mesh Network

Architecture and Evaluation of an Unplanned 802.11b Mesh Network. John Bicket, Daniel Aguayo, Sanjit Biswas, Robert Morris. Two approaches to constructing community networks are common. Multi-hop chosen locations directional an high-quality radio linkstennas

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531 views • 39 slides
Architecture and Evaluation of an Unplanned 802.11b Mesh Network

Architecture and Evaluation of an Unplanned 802.11b Mesh Network

Architecture and Evaluation of an Unplanned 802.11b Mesh Network. John Bicket, Daniel Aguayo, Sanjit Biswas, Robert Morris. Two approaches to constructing community networks are common. Multi-hop chosen locations directional an high-quality radio linkstennas

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399 views • 39 slides
Use of Smart Antennas in Ad Hoc Networks

Use of Smart Antennas in Ad Hoc Networks

Use of Smart Antennas in Ad Hoc Networks. What are Directional Antennas and Why use them ?. Omni-directional antennas are those antennas that radiates or receives energy equally well in all directions (also called isotropic antennas).

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564 views • 34 slides
Using Directional Antennas for Medium Access Control in Ad Hoc Networks

Using Directional Antennas for Medium Access Control in Ad Hoc Networks

Using Directional Antennas for Medium Access Control in Ad Hoc Networks. MOBICOM 2002 R. Roy Choudhury et al. 2002.10.16 Presented by Hyeeun Choi. Contents. Introduction Related Works Preliminaries Basic Directional MAC (DMAC) Protocol Multi-Hop RTS MAC (MMAC) Performance Evaluation

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482 views • 28 slides
Using Directional Antennas for Medium Access Control in Ad Hoc Networks

Using Directional Antennas for Medium Access Control in Ad Hoc Networks

Using Directional Antennas for Medium Access Control in Ad Hoc Networks. MOBICOM 2002 R. Roy Choudhury et al. 2002.10.16 Prepared by Hyeeun Choi. Contents. Introduction Related Works Preliminaries Basic Directional MAC (DMAC) Protocol Multi-Hop RTS MAC (MMAC) Performance Evaluation

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382 views • 28 slides
Model 195E Series with Direct Mount Dual Diversity Antennas

Model 195E Series with Direct Mount Dual Diversity Antennas

Weatherproof Boot. Weatherproof Boot. Direct Pole Mount. Pole Mounting Kit EST P/N AA195PM. Weatherproof Front Cover. ESTeem Resources EST Part No. AA109. Weatherproof Boot. RS-232 Programming Interface Cable EST Part No. AA0621. Power Over Ethernet Cable.

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316 views • 10 slides

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