FULL DUPLEX COMMUNICATION SYSTEM.

TOPIC: Full Duplex Wireless Communications in 5G systems PLEASE FOLLOW ACCORDING TO ATTACHED FILE AND RESEARCH PAPER DOCX ATTACHES OR ANY IEEE PAPERS.

FULL DUPLEX
COMMUNICATION
SYSTEM

 Transmission-direction of information
flow between two communication
devices
 Modes of transmission of data include:
◦Simplex
◦Full duplex
◦Half duplex
Introduction

 Can transmit data simultaneously in
both directions on transmission path
 Used to transmit data over serial
communication link
 Need two wires for sending data over
serial communication link
 Capacity of channel is common to
communicating devices all the time
Full duplex

 Due to large power difference between
imposed by the transmission of device
and lower power that is received
coming from remote transmit antenna
(Liu et al., 2015).
 Excessive self-interference result in
lowered full duplex systems capacity
that is less than half duplex system.
Self-cancellation

 Passive suppression: The attenuation
of path loss signal power as a result of
physical separation between receives
& transmits antennas of similar device
 Active suppression: Able to enhance
full duplex communication at limits to
the tune of 6 meters as well as
transmit powers of the normal WiFi
devices
Classification of Self-cancellation
methods

 Classified into:
◦ SI cancellation & Antenna separation: An
increase in path loss between receive & transmit
antennas is effective approach to attenuation the
SI power
◦ Directional SI suppression: Main radiation modes
of receive/transmit antenna for full duplex device
have limited intersection
◦ Enable partial suppression of the SI before the
radio frequency front end of the receiver
Passive SI cancellation

 Classified into:
◦ Analog cancellation
◦ Digital cancellation
◦ Combined analog/digital cancellation
Active SI suppression

 Bi, S., Zeng, Y. and Zhang, R., 2016.
Wireless powered communication
networks: An overview. IEEE Wireless
Communications, 23(2), pp.10-18
 Chung, M., Sim, M.S., Kim, J., Kim, D.K.
and Chae, C.B., 2015. Prototyping real-
time full duplex radios. IEEE
Communications Magazine, 53(9), pp.56-
63
 Liu, G., Yu, F.R., Ji, H., Leung, V.C. and Li,
X., 2015. In-band full-duplex relaying: A
survey, research issues and
References