Smart Antenna
1
29/3/2012
docsity.com
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Smart Antenna-Mobile Communication Systems-Presentations, Study Guides, Projects, Research of Mobile Communication Systems
This presentation is for Mobile Communication Systems course presented at Biju Patnaik University of Technology, Rourkela in presence of instructor Sir Om Narayan. It includes: Smart, Antenna, Wireless, Narrow, Sectors, Capability, Optimize, Radiation, Pattern, Adaptive, Array
Typology: Study Guides, Projects, Research
2011/2012
1 / 19
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download Smart Antenna-Mobile Communication Systems-Presentations and more Study Guides, Projects, Research Mobile Communication Systems in PDF only on Docsity!
Smart Antenna
1
Smart Antenna
“It is Antenna that makes it wireless” A smart Antenna System combines multiple antenna elements with a signal processing capability to optimize it’s radiation pattern automatically in response to signal environment For higher performance Narrower sectors Too many handoffs Smart Antenna: Multi beam antenna or adaptive array without handoffs between beams
f 1 f (^3) f 2
f 4
f 5 f 6
Types of Smart Antenna
System
Switched Beam: A finite number of fixed, predefined patterns or combining strategies(Sectors) Adaptive array: Infinite number of patterns that are adjusted in real time (Scenarios)
Switched Beam
SELECT^ BEAM OUTPUT^ SIGNAL
SIGNAL
BEAMFORMER
Adaptive array
Most advanced smart antenna approach It provides an optimal gain while simultaneously identifying tracking and minimizing interfering signal
Goal of Smart Antenna
Systems
The purpose of smart antenna system is to augment the signal quality of radio-based system through more focused transmission of radio signal while enhancing capacity through increase frequency reuse. The Feature of smart antenna systems are Signal gain Interference Rejection Power Efficiency
Benefits of Switch beam and
adaptive array
Integration Range or Coverage Interference Suppression
Benefits of Switch beam and
adaptive array
Advantages of Smart
Antennas
Both phased and adaptive array provide increased power by providing higher gain for the desired signal In term of interference suppression, phased array reduce the probability of interference with the narrower beam and adaptive array adjust the beam pattern to suppress interference
Uses of Smart Antenna
Phased array are mainly being studied for point to point wireless systems Adaptive arrays are being considered on cellular terminals where local scattering causes wide angular spread In the TDM system ANSI-136 adaptive antenna systems have been widely deployed
Thank You!