Akhil Gupta
Jaypee University Of Information Technology (Juit.Ac.In), Electronics and Communication, Teaching Associate and Research Assistant
Phone: 9622348316
Address: Jammu
Address: Jammu
less
Related Authors
InterestsView All (32)
Related Authors
Uploads
Papers by Akhil Gupta
networks. In the present scenario, 3G and 4G networks have
separate security layers but still there is a possibility of certain
prominent types of attacks. In this paper, a survey has been done
on all the possible attacks that may occur in present and future
scenarios. Wireless network attacks are classified on the basis of
access control, authentication, availability, confidentiality and
integrity as attacks can appear in the form of Access, channel
assignment and at the source end. This paper also reflects about
the next generation attacks like Man in the Middle Attack, Denial
of Service Attack and Eavesdropping. The security methods and
tools which helps to find the protection against different types of
attacks is also shown in this paper.
of modulation, coding and other signal parameters according
to the instantaneous conditions in the channel. This paper
explains the potential of AMC in wireless communication
over time-varying fading channel. By the use of rate adaptive
transmission, the transmitted information rates are
significantly increased provided accurate channel modelling
and channel state estimation is done. An important
performance measure discussed in this paper is spectral
efficiency (Bits/sec/Hz). Also, since the channel states have to
be estimated at the receiver, there would be a certain
degradation of system performance compared to ideal case of
perfect channel knowledge. The adaptive modulation provides
various modulation scheme and modulation levels according
to instantaneous channel conditions. When the received signal
is not faded, the modulation mode having a higher data rate is
selected to take advantages of good channel conditions and
maximize throughput. When the received signal fades, the
modulation level that decreases a data rate is selected. N-MSK
modulation scheme is preferred in non-linear channel
conditions and in communication systems where power
sources are limited. N-QAM is used mostly in linear
channels. OFDM modulation scheme is used for high data rate
transmission over frequency selective fading channel. Good
performance of these schemes requires accurate channel
estimation at the receiver and a reliable and fast feedback path
between estimator and the transmitter
is done on the basis of certain parameters. These parameters
for the analysis are throughput, number of bytes received. The
routing protocols compared are STAR and ZRP. The
comparison also stands between the FTP and FTP generic
systems. The performance evaluation will be done on the
Qualnet simulator platform.
depending upon various factors are considered. In those
factors, attenuation exponent is mainly considered. This paper
analyzes the effect of change in attenuation exponent on the
bit rate of frequency bands allocated to various types of radio
services in India as per National Frequency Allocation Plan.
In order to obtain better performance in data communication,
it is necessary to obtain such relations.
proved to be an important replacement to radio frequency
communication. In optical fiber cable communication, there is
a disadvantage that optical fiber gets damaged in a long
distance installation. Radio frequency communication also
deals with limitations of bandwidth and data rate. In this
paper, a brief description about free space optical (FSO)
communication and its connectivity with central cellular
network is explained. This paper also provides the
information about the role of free space optics in the central
cellular network. It contains an RF network, which has
connections within the Radio Access Network (RAN) and the
Central Network (CN) for connecting the mobile user
subscriber to the Public Switched Telephone Networks
(PSTN) and Internet. Moreover, free space optical
communication paves the way for a high bandwidth requiring
applications with license free operation, high transmission
security, full duplex transmission and protocol transparency
will give a broader view to free space optical communication.
multiple hopping. Frequent changes in the network give rise to the need of the component dynamic routing protocol.
In this paper, analysis of two prominent on-demand routing protocols: Ad Hoc On-Demand Distance Vector (AODV)
Routing and Dynamic Source Routing (DSR), for the static Ad Hoc network is compared on the basis of throughput,
jitter and data received at the server. In static Ad Hoc scenarios, performance of Dynamic Source Routing (DSR) is
better than Ad Hoc On-Demand Distance Vector (AODV) as the information of the route is always present in the
cache, which avoids the route discovery process. DSR is preferred because the result analysis depicts that throughput
and data received at the server is high and jitter is low for DSR as compared to AODV.
the Levenberg-Marquardt Back-Propagation (LMBP) Algorithm by incorporating the effect of weather parameters,
time factors and the previous day load information. The resulting data set is used for the training of a two layered
neural network.
networks. In the present scenario, 3G and 4G networks have
separate security layers but still there is a possibility of certain
prominent types of attacks. In this paper, a survey has been done
on all the possible attacks that may occur in present and future
scenarios. Wireless network attacks are classified on the basis of
access control, authentication, availability, confidentiality and
integrity as attacks can appear in the form of Access, channel
assignment and at the source end. This paper also reflects about
the next generation attacks like Man in the Middle Attack, Denial
of Service Attack and Eavesdropping. The security methods and
tools which helps to find the protection against different types of
attacks is also shown in this paper.
of modulation, coding and other signal parameters according
to the instantaneous conditions in the channel. This paper
explains the potential of AMC in wireless communication
over time-varying fading channel. By the use of rate adaptive
transmission, the transmitted information rates are
significantly increased provided accurate channel modelling
and channel state estimation is done. An important
performance measure discussed in this paper is spectral
efficiency (Bits/sec/Hz). Also, since the channel states have to
be estimated at the receiver, there would be a certain
degradation of system performance compared to ideal case of
perfect channel knowledge. The adaptive modulation provides
various modulation scheme and modulation levels according
to instantaneous channel conditions. When the received signal
is not faded, the modulation mode having a higher data rate is
selected to take advantages of good channel conditions and
maximize throughput. When the received signal fades, the
modulation level that decreases a data rate is selected. N-MSK
modulation scheme is preferred in non-linear channel
conditions and in communication systems where power
sources are limited. N-QAM is used mostly in linear
channels. OFDM modulation scheme is used for high data rate
transmission over frequency selective fading channel. Good
performance of these schemes requires accurate channel
estimation at the receiver and a reliable and fast feedback path
between estimator and the transmitter
is done on the basis of certain parameters. These parameters
for the analysis are throughput, number of bytes received. The
routing protocols compared are STAR and ZRP. The
comparison also stands between the FTP and FTP generic
systems. The performance evaluation will be done on the
Qualnet simulator platform.
depending upon various factors are considered. In those
factors, attenuation exponent is mainly considered. This paper
analyzes the effect of change in attenuation exponent on the
bit rate of frequency bands allocated to various types of radio
services in India as per National Frequency Allocation Plan.
In order to obtain better performance in data communication,
it is necessary to obtain such relations.
proved to be an important replacement to radio frequency
communication. In optical fiber cable communication, there is
a disadvantage that optical fiber gets damaged in a long
distance installation. Radio frequency communication also
deals with limitations of bandwidth and data rate. In this
paper, a brief description about free space optical (FSO)
communication and its connectivity with central cellular
network is explained. This paper also provides the
information about the role of free space optics in the central
cellular network. It contains an RF network, which has
connections within the Radio Access Network (RAN) and the
Central Network (CN) for connecting the mobile user
subscriber to the Public Switched Telephone Networks
(PSTN) and Internet. Moreover, free space optical
communication paves the way for a high bandwidth requiring
applications with license free operation, high transmission
security, full duplex transmission and protocol transparency
will give a broader view to free space optical communication.
multiple hopping. Frequent changes in the network give rise to the need of the component dynamic routing protocol.
In this paper, analysis of two prominent on-demand routing protocols: Ad Hoc On-Demand Distance Vector (AODV)
Routing and Dynamic Source Routing (DSR), for the static Ad Hoc network is compared on the basis of throughput,
jitter and data received at the server. In static Ad Hoc scenarios, performance of Dynamic Source Routing (DSR) is
better than Ad Hoc On-Demand Distance Vector (AODV) as the information of the route is always present in the
cache, which avoids the route discovery process. DSR is preferred because the result analysis depicts that throughput
and data received at the server is high and jitter is low for DSR as compared to AODV.
the Levenberg-Marquardt Back-Propagation (LMBP) Algorithm by incorporating the effect of weather parameters,
time factors and the previous day load information. The resulting data set is used for the training of a two layered
neural network.