'Received signal power' diaporamas de présentation

Lecture 2: RF Issues for Software Radios RF Engineering for the DSP Engineer

1.44k views • 118 slides

Fading Distributions

Fading Distributions. Describes how the received signal amplitude changes with time. Remember that the received signal is combination of multiple signals arriving from different directions, phases and amplitudes.

510 views • 37 slides

A Low-Cost Method to Thwart Relay Attacks in Wireless Sensor Networks

A Low-Cost Method to Thwart Relay Attacks in Wireless Sensor Networks. Reza Shokri Tutors: Panos Papadimitratos, Marcin Poturalski 29 January 2008. Agenda. Neighbor Discovery and Relay Attacks Currently Proposed Defense Methods Our System Model A Low-Cost Method to Thwart Relay Attacks

564 views • 34 slides

Chapter 3

Chapter 3. Mobile Radio Propagation. Radio Frequency Bands. Types of Waves. Ionosphere ( 80 - 720 km). Sky wave. Mesosphere ( 50 - 80 km). Stratosphere ( 12 - 50 km). Space wave. Ground wave. Troposphere ( 0 - 12 km). Transmitter. Receiver. Earth . Ground Wave Propagation (LF/MF).

410 views • 21 slides

Radio Propagation

Radio Propagation. Speed, Wavelength, Frequency. Light speed = Wavelength x Frequency = 3 x 10 8 m/s = 300,000 km/s. Types of Waves. Ionosphere ( 80 - 720 km). Sky wave. Mesosphere ( 50 - 80 km). Stratosphere ( 12 - 50 km). Space wave. Ground wave. Troposphere ( 0 - 12 km).

353 views • 21 slides

Performance Investigation on Multi-AP Transmission

Performance Investigation on Multi-AP Transmission. Date : 2019-05-13. Authors:. Introduction. As one of the potential technologies for 11be, multi-AP coordination has been proposed in a bunch of contributions [1]-[11]

137 views • 12 slides