Papers by Wasiu Opeyemi Oduola
This study takes advantage of the ability of Physical-
Layer Network Coding (PNC) to embrace elec... more This study takes advantage of the ability of Physical-
Layer Network Coding (PNC) to embrace electromagnetic interference,
improve spectral efficiency and achieve throughput
optimality in a femtocell operated as a relay. Specifically, we
make a case for a femtocell operating as a relay and utilizing
PNC to eliminate the interference that exists between macrocells
user equipments (MUEs) and femtocells home users equipments
(HUEs) in an Opened Subscriber Group (OSG) co-channel
deployment.With PNC implemented at the HNB relay, it becomes
possible for the relay to take advantage of the information signals
transmitted from both the HUE and MUE rather than treating
the MUE’s signals as interference. To guarantee the Service
Quality (QoS) of femtocell users, we develop the closed-form
expressions of the cummulative distributions function (CDF)
of the received signal-to-noise ratios (SNR) and the outage
probability of the HUE analytically. Simulation results match
the analytical results and it is demonstrated that PNC is suitable
for a relay operated femtocell network.
In this paper, we examine an hierarchical Software-
Defined Radio (SDR) controlled Wireless Senso... more In this paper, we examine an hierarchical Software-
Defined Radio (SDR) controlled Wireless Sensor Network (WSN)
testbed built in our Wireless Communications Lab. In this
testbed, an hierarchical cluster-based topology is employed to
fulfill the needs of energy efficiency and scalability where a
group of XBOW MicaZ Sensors/Motes in communication with
a Universal Software Radio Peripheral (USRP2) forms a cluster.
The USRP2s act as cluster heads to perform data collection using
the least interfered channels due to their capability in channel
sensing and waveform selection. The USRP2 also serves to extend
the transmission range of the sensors and eliminates the excessive
overhead required in ad hoc WSN cluster heads. The cluster
heads receive the data transmission from the motes on multiple
channels and relay the data to the central control on a separate
channel. It is expected that this testbed would help the research
community in understanding and gathering insightful knowledge
about SDR controlled WSNs in a practical context.
The challenge of mitigating the Uplink (UL) interference
in a two-tier heterogeneous network coul... more The challenge of mitigating the Uplink (UL) interference
in a two-tier heterogeneous network could be significantly
improved by employing Physical-Layer Network coding (PNC) at
a Home NodeB (HNB). This paper makes a case for a macrocell
femtocell overlay network that utilizes PNC to mitigate the UL
interference at the HNB. In closed subscriber group (CSG)
UL information exchange, a Macrocell User Equipment (MUE),
especially situated at coverage area’s edge of a macrocell nodeB
(MNB), creates interference that could make the received signalto-
interference-plus-noise-ratios (SINR) of the neighboring HNB
to fall below the acceptable threshold. In a bid to ensure that
the Service Quality (QoS) of femtocell and macrocell users are
guaranteed, we propose to use PNC at the HNB by taking
advantage of both the signals from the MUE and the Home
User Equipment (HUE), rather than considering the signal from
the MUE as interference. The paper develops the analytical
expression of outage probability in closed-form, or equivalently
the cummulative distribution function (CDF) for the received
SINR of the proposed system is provided. Our results show that
PNC is suitable for interference mitigation in femtocell network
and it provides significant gain over the traditional scheme.
In this work, we consider Quality of Service (QoS)
guarantee for Device to Device (D2D) users co-... more In this work, we consider Quality of Service (QoS)
guarantee for Device to Device (D2D) users co-existing with
a cellular system where the D2D communication links are
sharing radio spectrum resources with macrocell users in the
downlink. Despite the lofty advantages associated with D2D
communications, one major concern is the resulting interference
from the D2D users, which should not infringe on the service
quality requirements of the User Equipments (UEs). In this
work, we investigate the scenario in which D2D communications
operates simultaneously with downlink transmissions from the
Evolved Node B (eNB). Power control problem for the D2D
users is formulated in order to optimize the energy efficiency
of the eNB users as well as to ensure that QoS of D2D devices
and UEs does not fall below the acceptable target. The feasible
conditions of the power control problem are derived and then the
centralized and the distributed solutions are obtained. We further
suggest jointly designed dynamic power control and channel reallocation
algorithm that will guarantee the priority of the UEs.
Effectiveness of the proposed scheme is demonstrated through
extensive simulations.
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Papers by Wasiu Opeyemi Oduola
Layer Network Coding (PNC) to embrace electromagnetic interference,
improve spectral efficiency and achieve throughput
optimality in a femtocell operated as a relay. Specifically, we
make a case for a femtocell operating as a relay and utilizing
PNC to eliminate the interference that exists between macrocells
user equipments (MUEs) and femtocells home users equipments
(HUEs) in an Opened Subscriber Group (OSG) co-channel
deployment.With PNC implemented at the HNB relay, it becomes
possible for the relay to take advantage of the information signals
transmitted from both the HUE and MUE rather than treating
the MUE’s signals as interference. To guarantee the Service
Quality (QoS) of femtocell users, we develop the closed-form
expressions of the cummulative distributions function (CDF)
of the received signal-to-noise ratios (SNR) and the outage
probability of the HUE analytically. Simulation results match
the analytical results and it is demonstrated that PNC is suitable
for a relay operated femtocell network.
Defined Radio (SDR) controlled Wireless Sensor Network (WSN)
testbed built in our Wireless Communications Lab. In this
testbed, an hierarchical cluster-based topology is employed to
fulfill the needs of energy efficiency and scalability where a
group of XBOW MicaZ Sensors/Motes in communication with
a Universal Software Radio Peripheral (USRP2) forms a cluster.
The USRP2s act as cluster heads to perform data collection using
the least interfered channels due to their capability in channel
sensing and waveform selection. The USRP2 also serves to extend
the transmission range of the sensors and eliminates the excessive
overhead required in ad hoc WSN cluster heads. The cluster
heads receive the data transmission from the motes on multiple
channels and relay the data to the central control on a separate
channel. It is expected that this testbed would help the research
community in understanding and gathering insightful knowledge
about SDR controlled WSNs in a practical context.
in a two-tier heterogeneous network could be significantly
improved by employing Physical-Layer Network coding (PNC) at
a Home NodeB (HNB). This paper makes a case for a macrocell
femtocell overlay network that utilizes PNC to mitigate the UL
interference at the HNB. In closed subscriber group (CSG)
UL information exchange, a Macrocell User Equipment (MUE),
especially situated at coverage area’s edge of a macrocell nodeB
(MNB), creates interference that could make the received signalto-
interference-plus-noise-ratios (SINR) of the neighboring HNB
to fall below the acceptable threshold. In a bid to ensure that
the Service Quality (QoS) of femtocell and macrocell users are
guaranteed, we propose to use PNC at the HNB by taking
advantage of both the signals from the MUE and the Home
User Equipment (HUE), rather than considering the signal from
the MUE as interference. The paper develops the analytical
expression of outage probability in closed-form, or equivalently
the cummulative distribution function (CDF) for the received
SINR of the proposed system is provided. Our results show that
PNC is suitable for interference mitigation in femtocell network
and it provides significant gain over the traditional scheme.
guarantee for Device to Device (D2D) users co-existing with
a cellular system where the D2D communication links are
sharing radio spectrum resources with macrocell users in the
downlink. Despite the lofty advantages associated with D2D
communications, one major concern is the resulting interference
from the D2D users, which should not infringe on the service
quality requirements of the User Equipments (UEs). In this
work, we investigate the scenario in which D2D communications
operates simultaneously with downlink transmissions from the
Evolved Node B (eNB). Power control problem for the D2D
users is formulated in order to optimize the energy efficiency
of the eNB users as well as to ensure that QoS of D2D devices
and UEs does not fall below the acceptable target. The feasible
conditions of the power control problem are derived and then the
centralized and the distributed solutions are obtained. We further
suggest jointly designed dynamic power control and channel reallocation
algorithm that will guarantee the priority of the UEs.
Effectiveness of the proposed scheme is demonstrated through
extensive simulations.
Layer Network Coding (PNC) to embrace electromagnetic interference,
improve spectral efficiency and achieve throughput
optimality in a femtocell operated as a relay. Specifically, we
make a case for a femtocell operating as a relay and utilizing
PNC to eliminate the interference that exists between macrocells
user equipments (MUEs) and femtocells home users equipments
(HUEs) in an Opened Subscriber Group (OSG) co-channel
deployment.With PNC implemented at the HNB relay, it becomes
possible for the relay to take advantage of the information signals
transmitted from both the HUE and MUE rather than treating
the MUE’s signals as interference. To guarantee the Service
Quality (QoS) of femtocell users, we develop the closed-form
expressions of the cummulative distributions function (CDF)
of the received signal-to-noise ratios (SNR) and the outage
probability of the HUE analytically. Simulation results match
the analytical results and it is demonstrated that PNC is suitable
for a relay operated femtocell network.
Defined Radio (SDR) controlled Wireless Sensor Network (WSN)
testbed built in our Wireless Communications Lab. In this
testbed, an hierarchical cluster-based topology is employed to
fulfill the needs of energy efficiency and scalability where a
group of XBOW MicaZ Sensors/Motes in communication with
a Universal Software Radio Peripheral (USRP2) forms a cluster.
The USRP2s act as cluster heads to perform data collection using
the least interfered channels due to their capability in channel
sensing and waveform selection. The USRP2 also serves to extend
the transmission range of the sensors and eliminates the excessive
overhead required in ad hoc WSN cluster heads. The cluster
heads receive the data transmission from the motes on multiple
channels and relay the data to the central control on a separate
channel. It is expected that this testbed would help the research
community in understanding and gathering insightful knowledge
about SDR controlled WSNs in a practical context.
in a two-tier heterogeneous network could be significantly
improved by employing Physical-Layer Network coding (PNC) at
a Home NodeB (HNB). This paper makes a case for a macrocell
femtocell overlay network that utilizes PNC to mitigate the UL
interference at the HNB. In closed subscriber group (CSG)
UL information exchange, a Macrocell User Equipment (MUE),
especially situated at coverage area’s edge of a macrocell nodeB
(MNB), creates interference that could make the received signalto-
interference-plus-noise-ratios (SINR) of the neighboring HNB
to fall below the acceptable threshold. In a bid to ensure that
the Service Quality (QoS) of femtocell and macrocell users are
guaranteed, we propose to use PNC at the HNB by taking
advantage of both the signals from the MUE and the Home
User Equipment (HUE), rather than considering the signal from
the MUE as interference. The paper develops the analytical
expression of outage probability in closed-form, or equivalently
the cummulative distribution function (CDF) for the received
SINR of the proposed system is provided. Our results show that
PNC is suitable for interference mitigation in femtocell network
and it provides significant gain over the traditional scheme.
guarantee for Device to Device (D2D) users co-existing with
a cellular system where the D2D communication links are
sharing radio spectrum resources with macrocell users in the
downlink. Despite the lofty advantages associated with D2D
communications, one major concern is the resulting interference
from the D2D users, which should not infringe on the service
quality requirements of the User Equipments (UEs). In this
work, we investigate the scenario in which D2D communications
operates simultaneously with downlink transmissions from the
Evolved Node B (eNB). Power control problem for the D2D
users is formulated in order to optimize the energy efficiency
of the eNB users as well as to ensure that QoS of D2D devices
and UEs does not fall below the acceptable target. The feasible
conditions of the power control problem are derived and then the
centralized and the distributed solutions are obtained. We further
suggest jointly designed dynamic power control and channel reallocation
algorithm that will guarantee the priority of the UEs.
Effectiveness of the proposed scheme is demonstrated through
extensive simulations.