The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, flexible frequency division duplex (FDD) and time division duplex (TDD) schemes are considered in FDD spectrum. With FDD spectrum, there is a paired uplink (UL) carrier with each downlink (DL) carrier, each carrier with the same bandwidth. Because equal resources are provisioned for the DL and UL, FDD spectrum is not well suited for asymmetric DL/UL traffic. While the FDD UL-paired...
Latest technology requires increase in spectral efficiency by optimum utilization of the spectrum band with higher power efficiency. In this paper first, Altera FPGA for communication with FIR band pass filter has been analyzed and implemented in hardware and then maximum allowable total power that interferes below than limit is adaptively calculated. For power distribution, two power and capacity...
In underwater acoustic sensor networks (UWASNs), several transmitters using the same power send data to the sink. Then, the sink will collect more interference because of the slow-fading of signal, due to this, a higher outage probability and high energy consumption occurs. Underwater wireless communication is quite difficult because of the factors like propagation delay, small available bandwidth,...
Reducing the global energy consumption is an important goal of fifth generation (5G) networks. The cloud-radio access network (C-RAN) along with power control mechanism can potentially offer the much sought after relief in energy consumption by enabling centralized processing. In this paper, a tunable downlink distance-based power control mechanism is considered and its effects on network-level coverage...
Joint power control with optimal beamforming design and power control with minimum antenna selection under signal to inference noise ratio constraints have been considered in separate wireless communication scenarios. In power control algorithms, multiple antennas with linear beamforming are used to reduce the interference power, which also minimizes the total transmitted power in uplink/downlink...
Power control schemes are proposed for a full-duplex (FD) device-to-device (D2D) network operating as an underlay of a primary FD network. As networks with different quality of service (QoS) requirements may coexist in future heterogeneous networks, it is assumed that the underlay D2D network is operating with best effort QoS provisioning, while the primary FD network requires guaranteed QoS. A centralized...
In this paper we present a data-driven power control (DDPC) approach to improve total cell throughput and energy efficiency of ultra-dense femtocells. Although femtocells can increase the capacity and coverage in an indoor environment, ultra-dense femtocells may consume a lot of energy and generate severe interference. We investigate a data-driven clustering approach to reduce co-tier interference...
With the rapid increase in the use of smartphones and data traffic load on the base stations increasing everyday, an alternative mode of communication is the need of the hour. Device-to-device (D2D) communication allows devices to connect to each other directly without the intervention of the base station. Besides, it provides high spectrum efficiency and a much better signal-to-interference-plus-noise...
The rise in mobile data traffic demands from indoor users (UEs) coupled with poor cellular coverage in indoor environments, triggering the growth of Femto cell deployments. However, due to densification of Femtos, frequency reuse one, and lack of coordination among Femtos in LTE HetNets, cell-edge users of Macro cells, who are in the vicinity of Femtos, get affected by cross-tier interference of the...
In this paper, we consider an underlay cognitive radio network (CRN) comprising of a cognitive base station (CBS) and multiple multicast group of secondary users (SUs). A common primary user (PU) channel is used to support downlink transmission to all SUs of a common multicast group. Our objective is to maximize the overall energy efficiency (EE) for the multicast CRN. The problem is formulated using...
We propose a novel power control algorithm for the minimization of the peak load in the widely used load coupled network model, which is an abstract model able to capture the behavior of current and possibly future wireless networks. We first prove that the solution to the optimization problem we pose here requires all base stations with the same load. This necessary condition for optimality gives...
Device-to-Device (D2D) communication enables a directdata transmission between User Equipment (UE) without the relayby Base Station (BS). When D2D communication is employedunderlying the Long Term Evolution (LTE) cellular network, it canenhance the spectrum utilization, power-saving efficiency andnetwork capacity. However, it might also cause inter-interferenceswhich degrade the system performance...
This paper investigates power control and relay selection in Full Duplex Cognitive Relay Networks (FDCRNs), where the secondary-user (SU) relays can simultaneously receive and forward the signal from the SU source. We study both non-coherent and coherent scenarios. In the non-coherent case, the SU relay forwards the signal from the SU source without regulating the phase; while in the coherent scenario,...
The major goal of research in Mobile Ad hoc Networks (MANET) is the efficient utilization of scarce available resources while improving network throughput and network lifetime. Energy consumption is one precious component of these resources as multimedia applications consumes enormous amount of energy during communication. To achieve the goal of optimal energy conservation of a MANET, an optimal power...
In this paper, we propose a power control algorithm dedicated for machine type communications (MTC) in future non-orthogonal multiple access (NOMA) networks employing game theory. In MTC networks, communication reliability should be considered prior to power consumption or energy efficiency. Once the reliability is satisfied, discussions about power consumption makes sense. We build a cost function...
The performance of wireless body area networks (WBANs) may be degraded due to co-channel interference, i.e., when sensors of different coexisting WBANs transmit at the same time-slots using the same channel. In this paper, we exploit the 16 channels available in the 2.4 GHz unlicensed international band of ZIGBEE, and propose a distributed scheme that opts to avoid interference through channel to...
The target of this paper is to propose a practical low-complexity power allocation algorithm that strikes a good balance between Spectral Efficiency (SE) and power saving for the downlink of interference-limited cellular networks. Because abundant interference usually results from dense frequency reuse and high power transmission, power optimization schemes are critical to interference management...
Energy consumption of Sensor Nodes is an important issue in Wireless Sensor Network design. Since most of the nodes are minuscule battery operated, increased energy consumption will lead to reduced life time of nodes. One of the mechanism used in WSN for reducing energy consumption is the Transmission Power Control. Transmitting at a constant / highest power level leads to energy wastage and also...
This paper examines and provides the theoretical evidence of the feasibility of 60 GHz mmWave in wireless body area networks (WBANs), by analyzing its properties. It has been shown that 60 GHz based communication could better fit WBANs compared to traditional 2.4 GHz based communication because of its compact network coverage, miniaturized devices, superior frequency reuse, multi-gigabyte transmission...
The employment of femtocells has been considered as a promising approach for increasing network capacity and enhancing end users' QoS and throughput as well as low cost and simple deployment. Deploying femtocells is common in indoor environment such as residential buildings comprising adjacent apartments. However, dense deployment of femtocells introduces interference among femtocells and the undesirable...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.