Wireless Networking: Components, Mixers, and Spread Spectrum Transmission

Running head: WIRELESS NETWORKING
Wireless Networking
Name of the Student
Name of the University
Author Note

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WIRELESS NETWORKING
Table of Contents
Answer 1..............................................................................................................................2
Answer 2..............................................................................................................................3
2.1. Components of Radio System..................................................................................3
2.1.1. Transmitter.........................................................................................................3
2.1.2. Receiver.............................................................................................................4
2.2. Mixers.......................................................................................................................4
2.2.1. Analog Mixers...................................................................................................4
2.2.2. Digital Mixers....................................................................................................5
2.2.3. Powered Mixers.................................................................................................6
Answer 3..............................................................................................................................6
References..........................................................................................................................17

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WIRELESS NETWORKING
Answer 1
The spread spectrum transmission is generally used for transmission of the radio or
telecommunication signals. Spread spectrum is a type of wireless communication where the
transmitted signal is varied deliberately. In this technology, a signal is generally transmitted on a
bandwidth that is larger in size in accordance to the original message or signal. One distinctive
feature of spread spectrum is that the transmitted signal is much higher than the signal that uses
conventional modulation method (Stüber, 2017). Therefore, spread spectrum finds its application
in many different systems such as military system, positioning system, cellular radio and
Wireless LAN. There are various spread spectrum technique such as direct sequence, frequency
hopping and multi carrier. The spread spectrum transmission is mainly used in radio transmission
where the bandwidth occupancy of the signal is considerably higher in comparison (Torrieri,
2015). Out of the three techniques of spread spectrum transmission, two most commonly used
method of comparison are direct sequence spread spectrum and frequency hopping spread
spectrum. The differences between these two techniques are as follows-
Frequency Hopping Spread Spectrum Direct Sequence Spread Spectrum
Frequency Hopping Spread Spectrum or FHSS
makes use of a radio carrier that hops from one
frequency to another in a known pattern
Direct Sequence Spread Spectrum or DSSS makes
use of a carrier that generally remains fixed in a
specific frequency band (Xuan Quyen, Van Yem &
Manh Hoang, 2013).
In FHSS, the frequency is randomized While in DHSS, frequency is generally kept
constant.
Frequency Hopping Spread Spectrum generally has
a limited throughput that ranges up to 2-3 Mbs
Direct Sequence Spread spectrum generally has a
much higher throughput in comparison to

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WIRELESS NETWORKING
@2.4 GHZ. Frequency Hopping Spread Spectrum.
FHSS however, is less sensitive to Bluetooth
interface but has certain security issues associated
with it.
Although the bandwidth deficiency decreases,
DSSS is known for its reliability, integrity and
security.
Answer 2
2.1. Components of Radio System
The two main component of a radio system is radio transmitter and a radio receiver.
These two major components are associated with several sub components.
2.1.1. Transmitter
The transmitter is a major component of a radio system. The different sub components of
a transmitter are the power supply, the oscillator, the modulator, the amplifier and the antenna.
Figure 1: Sub Components of a Transmitter
(Source: Pandit & Singh, 2017)