Study of Full-duplex Communication in Satellite Networks

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Table of Contents
1. Title..........................................................................................................................................3
2. Abstract....................................................................................................................................3
3. Background and Literature Review..........................................................................................3
3.1 Introduction.......................................................................................................................3
3.2 Background............................................................................................................................4
3.3 Half-duplex communication.............................................................................................4
3.3.1 Time Divison Duplex (TDD).....................................................................................5
3.3.2 Frequency Division duplex (FDD)............................................................................5
3.4 Full-Duplex Communication............................................................................................5
3.4.1 Self-Interference..............................................................................................................6
4. Backscatter modulation............................................................................................................6
4.1 Functioning of full-duplex network in backscatter modulation........................................7
4.2 Limitations of full-duplex in backscatter modulation.......................................................8
4.3 Wireless passive network (WPSN)...................................................................................8
5. Conclusion................................................................................................................................9
References......................................................................................................................................11
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1. Title
Viability Study of Full-duplex Communication in Satellite Networks
2. Abstract
With the operation of full-duplex model, the orthogonal half-duplex relaying
networks is considered to be inefficient in the application in certain terrestrial
communication. Full-duplex systems are gaining much interest in terrestrial
networks, thanks to the short distance trend and lower power (energy)
transmission requirement in satellite communication. This paper has explored the
use of full-duplex in operation of satellite in compliant network (DVB-S2).Self-
interference is the major limitation in full-duplex and its management is the main
focus of this report.Modelling the impacts of energy amplifier non-linearity and
self-interference on the received signal quality is undertaken. Numerical
assessment expressions in calculation of self-interference confirms that full-
duplex satellite communication is the best resolution for the competent
application of satellite spectrum from a technical opinion.
3. Background and Literature Review
3.1 Introduction
Satellite communications has a wide coverage which serves as an effective media
in providing interactive broadband and broadcasting services in areas served by
terrestrial networks. Satellite serves as a relay for transmission of information
from transmitter to the receiver. In satisfaction of high demand for quality and
high output from the satellite communication, numerous technologies and
techniques deliberated towards the enhancement of spectral efficacy of satellite
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communication. This is made possible by either addition of spectrum or fully
exploitation of the current ones [1]. Use of added spectrum is prejudiced by
technological majority and existing regulations of the constituent sub-system.
Fully utilization of the existing system is currently investigated via enhancement
of DVB-S2 standards, cognitive techniques, multbeam architecture and full
frequency reprocess.
3.2 Background
In full-duplex communication, a node receives and transmit the information in the
related frequency band simultaneously. The gains are reduced by SI occurrence
that is caused by the leakages of power signal from transmitted waveforms. The
effective combination of full-duplex networks includes the study of acceptable SI
levels [2]. Then the enactment of compensation techniques follows in achieving
the required levels. The self-interference cancellation are classified into two, i.e.
active and passive cancellation .Active suppression involves exploitation of
knowledge on the nodes signal transmission to eliminate the self-interference.
Passive suppression involves the isolation of transmission and reception antennae.
Analogue layer coding knowledge saves the bandwidth of the satellite, Network
coding improves the analogue coding therefore, justifying the research of full-
duplex communication in satellites [3].
3.3 Half-Duplex Communication
In this type of communication, a specific node transmits or receives a signal over
a single network channel. Reception and transmission of information can’t occur
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