Frequency reuse can drastically increase the spectrum efficiency.
Co-channel interference is a major concern
.
Why do we need frequency reuse?
Frequency reuse
improve the spectral efficiency and signal Quality (QoS)
. … In Frequency Reuse scheme, total bandwidth is divided into different sub-bands that are used by cells. Frequency reuse scheme allow WiMax system operators to reuse the same frequencies at different cell sites.
What is the frequency reuse Mcq?
Answer: a. Explanation: Frequency reuse is
the process of using the same radio frequencies on radio transmitter sites within a geographic area
.
What is the frequency reuse?
Technique for using
a specified range of frequencies more than once in the same
radio system so that the total capacity of the system is increased without increasing its allocated bandwidth.
What is the disadvantage of frequency reuse?
Although frequency reuse- m model mitigates ICI, the main disadvantage of such technique is that
it reduces network capacity
. With less resources available in each cell, the operator is not able to accommodate all the existing UEs.
Can same frequency be repeated within a cluster?
Each cell is designed to use radio frequencies within its boundaries, while the same frequencies can be reused in other cells not far away without interference, in another cluster. Such cells are called „
co-channel
‟ cells.
What is not same in CDMA technique?
Capacity in CDMA is soft, CDMA has all users on each frequency and users are separated by code. This means, CDMA operates in the presence of noise and interference. In addition,
neighboring cells use the same frequencies
, which means no re-use.
Why do cell phone networks need frequency reuse?
In the cellular reuse concept,
frequencies allocated to the service are reused in a regular pattern of areas
, called “cells”, each covered by one base station. … To ensure that the mutual interference between users remains below a harmful level, adjacent cells use different frequencies.
What is reuse distance?
Reuse distance is
the number of distinct memory references that have happened between two memory refer- ences to the same location
. In short, it tells you when was the last time you used this address.
What are handoff strategies?
Definition:
When a mobile moves into a different cell while a conversation is in progress
, the MSC automatically transfers the call to a new channel belonging to the new base station.
Which one is an advantage of using frequency reuse *?
13. Which one is not an advantage of using frequency reuse? Explanation: Frequency reuse is a technique of
reusing frequencies and channels within a cellular system to improve capacity and spectral efficiency
.
How many users are supported in is 95 for each 1.25 MHz?
How many users are supported in IS-95 for each 1.25 MHz? Explanation: IS-95 supports upto
64 users
which are orthogonally coded and simultaneously transmitted on each 1.25 MHz.
What is the condition for handoff?
What is the condition for handoff? Explanation: Handoff
occurs when a mobile moves into a different cell while a conversation is in progress
. The MSC automatically transfers the call to a new channel belonging to the new base station.
What is the basic concept of frequency re use?
Frequency reusing is the concept of
using the same radio frequencies within a given area, that are separated by considerable distance, with minimal interference, to establish communication
. For example, when N cells are using the same number of frequencies and K be the total number of frequencies used in systems.
What is frequency hopping used for?
Frequency hopping is a technique mainly used to
keep two or more RFID readers from interfering with each other while reading RFID tags in the same area
.
What are the concepts of frequency?
Frequency, in physics,
the number of waves that pass a fixed point in unit time
; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.
