Netw360 Week 2 Ilab

COMPUTE RF BEHAVIOR AND MIMO

Calculations

Step 4 (dBm of 1W): 30 dBm

Step 11 (max gain): 8.4dB

Step 15 (.11g free space loss): -81.561

Step 17 (.11a free space loss): -88.361

Step 19 (link budget): 9.438999999999993 dB

Summary of RF Behavior

In summary of the RF behavior signal of the frequency is measured in decibels. The way decibels work is the greater positive measure of dBm’s the better the signal will be. The less the dBm measurement is in the negatives the worst signal can be. As an example in radio frequencies from cell phone towers, typically -90dBm will result in no signal to the tower for service. The closer to 0 the dBm measurement occurs the better and faster the signal will be on your device. Gains and losses are what is used to look into measurement of RF waves. Gains help produce a stronger RF signal, whereas Loss occurs through multiple dilemmas. An example of gain and how it is used is through amplifiers that may boost another 5+ decibels. Loss can occur such as in this lab just from running coax. The longer the cable is the more loss you will see across the transition of the signal.

Begin section here

MIMO

Introduction

Multiple-Input Multiple-Output (MIMO) is a technology that uses multiple transmitters and receivers to transfer more data at the same time. Wireless technology 802.11n supports MIMO and is one of the primary causes as to why 802.11n has higher wireless speed options as opposed to the other wireless technologies. In order to get the best results and range out of MIMO both the mobile device and the access point should have MIMO support.The way MIMO works is through multipath. Multipath is a phenomenon of natural radio-waves that before would have caused interference and distortion of wireless radio waves. MIMO takes advantage of multipath and uses those waves that bounce off walls, ceilings, and other objects, reaching the receiving antenna multiple times at different angles.

Advantages and...