While state-of-the-art in wireless communication is highly spectrum efficient, it is still wantin... more While state-of-the-art in wireless communication is highly spectrum efficient, it is still wanting in terms of energy efficiency. Sleep scheduling techniques provide limited gains due to the large fraction of time spent by wireless devices in idle-listening. The use of multi-clockrate sampling devices (MCDs) in conjunction with frequency agnostic preamble detection promises significant improvements in energy efficiency by downclocking the receiver to save energy. In this paper, we consider a wireless ad hoc network of MCDs, and model it as a small world network. We propose a new energy efficient small world network model for a network of MCDs, which considers the battery energy of the wireless nodes, the multi-hop transmission distance, and downclocking level of the devices. Results show that the proposed model is more energy efficient than the Newman and Watts model.
Future of cellular networks lies in heterogeneity. Heterogeneous cellular networks are characteri... more Future of cellular networks lies in heterogeneity. Heterogeneous cellular networks are characterized by overlay of low power nodes such as microcells, picocells, and femtocells along with traditional macrocell base stations. These nodes help operators to improve system capacity in cost effective manner while making the environment greener by reducing the carbon footprint. Research has shown that femtocells can be an effective solution to handle the increasing demands for indoor mobile traffic. However, low utilization of femtocell resources limits the gain obtained from their large scale deployment. Also, random placement of femtocells accumulate additional interference to macrocell users. In this paper, we introduce the concept of cell biasing for femtocells to improve user association and resource utilization. Our work analyses the effects of cell biasing on femtocell based cellular network and provides improvement in capacity and energy efficiency of the network through frequency...
2013 19th IEEE International Conference on Networks (ICON), 2013
ABSTRACT The recent trend in wireless communication networks has seen the focus shift from spectr... more ABSTRACT The recent trend in wireless communication networks has seen the focus shift from spectrum efficiency to energy efficiency. Use of multi clock-rate sampling devices to provide reduced power idle listening promises to significantly reduce power consumption in wireless devices without affecting throughput or transmission range. However, the use of frequency agnostic preamble to enable multi clock-rate detection causes linear scaling of preamble length, and consequently, the goodput performance of the network suffers. In this paper, we look at a modification of RObust Header Compression (ROHC) as a means to restrict header length scaling and its applicability in networks of multi-frequency sampling wireless devices. We analyze the modified preamble compression scheme deployed on multi clock-rate sampling wireless devices and determine performance metrics such as channel utilization and goodput across different error rates and downclocking factors. The energy efficiency performance of such a network is also studied. The results obtained are validated using extensive simulation.
2013 19th IEEE International Conference on Networks (ICON), 2013
ABSTRACT The demand for bandwidth in cellular networks is ever increasing and most of it originat... more ABSTRACT The demand for bandwidth in cellular networks is ever increasing and most of it originates from indoor users. Femtocells are low-power, low-cost home base stations that can be deployed by end users in homes/offices to satisfy this need without incurring significant deployment and running costs. Widespread deployment of femtocells appear a potential reality in near future, and hence, it is of interest to study its energy saving measures. One promising energy efficiency technique is the introduction of sleep mode on femtocells, allowing them to switch off their radio and associated processing when there are no active devices within their range. In this paper, we model sleep-mode behavior in femtocells using Renewal-Reward-Process and determine the lower bound on power consumption that can be achieved. Power consumption for user equipments and macrocell base station are also modeled to evaluate overall network power consumption. The analytical model is verified through extensive simulation.
Wire crossings limit the performance of a logic circuit in Quantum-Dot Cellular Automata (QCA) ba... more Wire crossings limit the performance of a logic circuit in Quantum-Dot Cellular Automata (QCA) based design. Minimization of wire-crossings is, therefore, of prime importance in the current nanotechnology, susceptible to high error rates. This work proposes a QCA (Quantum-Dot Cellular Automata) logic gate (UQCALG) realizing the universal functions. The design of UQCALG is based on the coupled Majority Minority (CMVMIN)
2013 19th IEEE International Conference on Networks (ICON), 2013
ABSTRACT The demand for bandwidth in cellular networks is ever increasing and most of it originat... more ABSTRACT The demand for bandwidth in cellular networks is ever increasing and most of it originates from indoor users. Femtocells are low-power, low-cost home base stations that can be deployed by end users in homes/offices to satisfy this need without incurring significant deployment and running costs. Widespread deployment of femtocells appear a potential reality in near future, and hence, it is of interest to study its energy saving measures. One promising energy efficiency technique is the introduction of sleep mode on femtocells, allowing them to switch off their radio and associated processing when there are no active devices within their range. In this paper, we model sleep-mode behavior in femtocells using Renewal-Reward-Process and determine the lower bound on power consumption that can be achieved. Power consumption for user equipments and macrocell base station are also modeled to evaluate overall network power consumption. The analytical model is verified through extensive simulation.
While state-of-the-art in wireless communication is highly spectrum efficient, it is still wantin... more While state-of-the-art in wireless communication is highly spectrum efficient, it is still wanting in terms of energy efficiency. Sleep scheduling techniques provide limited gains due to the large fraction of time spent by wireless devices in idle-listening. The use of multi-clockrate sampling devices (MCDs) in conjunction with frequency agnostic preamble detection promises significant improvements in energy efficiency by downclocking the receiver to save energy. In this paper, we consider a wireless ad hoc network of MCDs, and model it as a small world network. We propose a new energy efficient small world network model for a network of MCDs, which considers the battery energy of the wireless nodes, the multi-hop transmission distance, and downclocking level of the devices. Results show that the proposed model is more energy efficient than the Newman and Watts model.
Future of cellular networks lies in heterogeneity. Heterogeneous cellular networks are characteri... more Future of cellular networks lies in heterogeneity. Heterogeneous cellular networks are characterized by overlay of low power nodes such as microcells, picocells, and femtocells along with traditional macrocell base stations. These nodes help operators to improve system capacity in cost effective manner while making the environment greener by reducing the carbon footprint. Research has shown that femtocells can be an effective solution to handle the increasing demands for indoor mobile traffic. However, low utilization of femtocell resources limits the gain obtained from their large scale deployment. Also, random placement of femtocells accumulate additional interference to macrocell users. In this paper, we introduce the concept of cell biasing for femtocells to improve user association and resource utilization. Our work analyses the effects of cell biasing on femtocell based cellular network and provides improvement in capacity and energy efficiency of the network through frequency...
2013 19th IEEE International Conference on Networks (ICON), 2013
ABSTRACT The recent trend in wireless communication networks has seen the focus shift from spectr... more ABSTRACT The recent trend in wireless communication networks has seen the focus shift from spectrum efficiency to energy efficiency. Use of multi clock-rate sampling devices to provide reduced power idle listening promises to significantly reduce power consumption in wireless devices without affecting throughput or transmission range. However, the use of frequency agnostic preamble to enable multi clock-rate detection causes linear scaling of preamble length, and consequently, the goodput performance of the network suffers. In this paper, we look at a modification of RObust Header Compression (ROHC) as a means to restrict header length scaling and its applicability in networks of multi-frequency sampling wireless devices. We analyze the modified preamble compression scheme deployed on multi clock-rate sampling wireless devices and determine performance metrics such as channel utilization and goodput across different error rates and downclocking factors. The energy efficiency performance of such a network is also studied. The results obtained are validated using extensive simulation.
2013 19th IEEE International Conference on Networks (ICON), 2013
ABSTRACT The demand for bandwidth in cellular networks is ever increasing and most of it originat... more ABSTRACT The demand for bandwidth in cellular networks is ever increasing and most of it originates from indoor users. Femtocells are low-power, low-cost home base stations that can be deployed by end users in homes/offices to satisfy this need without incurring significant deployment and running costs. Widespread deployment of femtocells appear a potential reality in near future, and hence, it is of interest to study its energy saving measures. One promising energy efficiency technique is the introduction of sleep mode on femtocells, allowing them to switch off their radio and associated processing when there are no active devices within their range. In this paper, we model sleep-mode behavior in femtocells using Renewal-Reward-Process and determine the lower bound on power consumption that can be achieved. Power consumption for user equipments and macrocell base station are also modeled to evaluate overall network power consumption. The analytical model is verified through extensive simulation.
Wire crossings limit the performance of a logic circuit in Quantum-Dot Cellular Automata (QCA) ba... more Wire crossings limit the performance of a logic circuit in Quantum-Dot Cellular Automata (QCA) based design. Minimization of wire-crossings is, therefore, of prime importance in the current nanotechnology, susceptible to high error rates. This work proposes a QCA (Quantum-Dot Cellular Automata) logic gate (UQCALG) realizing the universal functions. The design of UQCALG is based on the coupled Majority Minority (CMVMIN)
2013 19th IEEE International Conference on Networks (ICON), 2013
ABSTRACT The demand for bandwidth in cellular networks is ever increasing and most of it originat... more ABSTRACT The demand for bandwidth in cellular networks is ever increasing and most of it originates from indoor users. Femtocells are low-power, low-cost home base stations that can be deployed by end users in homes/offices to satisfy this need without incurring significant deployment and running costs. Widespread deployment of femtocells appear a potential reality in near future, and hence, it is of interest to study its energy saving measures. One promising energy efficiency technique is the introduction of sleep mode on femtocells, allowing them to switch off their radio and associated processing when there are no active devices within their range. In this paper, we model sleep-mode behavior in femtocells using Renewal-Reward-Process and determine the lower bound on power consumption that can be achieved. Power consumption for user equipments and macrocell base station are also modeled to evaluate overall network power consumption. The analytical model is verified through extensive simulation.
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Papers by Anik Sengupta