Proportional QoS adjustment for achieving feasible power allocation in CDMA systems

Mathar, Rudolf; Schmeink, Anke

doi:10.1109/tcomm.2008.041173

Cited by 14 publications

(15 citation statements)

References 26 publications

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“…Due to this reason, we just concentrate on the power demand by the detection stage. Nevertheless, this network centric optimization can be accomplished in a distributed fashion by recalling the results in [27, 31], where, for a given reference SINR, there exists only one solution to the minimum power allocation problem that achieves the reference in a given cell. In addition, we assume that the power consumption related to the signal processing and hardware employed by the detector in each BS is not affected by the neighbour BSs (no inter-cell interference), or this effect could be considered as thermal noise [2, 5].…”

Section: Proposed Network Efficient Power Controlmentioning

confidence: 99%

Network Efficient Power Control for Wireless Communication Systems

Campos-Delgado

Rivera

Martinez-Sánchez

et al. 2014

The Scientific World Journal

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We introduce a two-loop power control that allows an efficient use of the overall power resources for commercial wireless networks based on cross-layer optimization. This approach maximizes the network's utility in the outer-loop as a function of the averaged signal to interference-plus-noise ratio (SINR) by considering adaptively the changes in the network characteristics. For this purpose, the concavity property of the utility function was verified with respect to the SINR, and an iterative search was proposed with guaranteed convergence. In addition, the outer-loop is in charge of selecting the detector that minimizes the overall power consumption (transmission and detection). Next the inner-loop implements a feedback power control in order to achieve the optimal SINR in the transmissions despite channel variations and roundtrip delays. In our proposal, the utility maximization process and detector selection and feedback power control are decoupled problems, and as a result, these strategies are implemented at two different time scales in the two-loop framework. Simulation results show that substantial utility gains may be achieved by improving the power management in the wireless network.

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Section: Proposed Network Efficient Power Controlmentioning

confidence: 99%

Network Efficient Power Control for Wireless Communication Systems

Campos-Delgado

Rivera

Martinez-Sánchez

et al. 2014

The Scientific World Journal

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“…This can be partly attributed to the difficulty in direct measurement of residual stresses with standard methods, such as the layer removal method 113 and the hole drilling method. 114 However, since the level of birefringence can be related to the level of residual stresses through the wellknown stress-optical law, 115 the measured birefringence indicates the level of residual stresses in the molded part. This relationship between stress and birefringence, however, does not differentiate the thermally induced residual stresses from the flowinduced residual stresses.…”

Section: Reduction In Thermal-induced Residual Stressesmentioning

confidence: 99%

Rapid thermal cycling of injection molds: An overview on technical approaches and applications

2008

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“…The lower frequencies used for commercial satellite communications, like C-band (4-8 GHz) and Ku-band (12)(13)(14)(15)(16)(17)(18), have become congested. Therefore, higher frequency bands, such as the Ka-band (approximately 20-30 GHz), are attracting growing interest for both commercial and military satellite operators.…”

Section: Introductionmentioning

confidence: 99%

QoS provisioning by power control for video communication via satellite links

Lee

2014

Satell Commun Network

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Summary Video transmissions over satellite links are sensitive to signal fades because of rain, especially in the tropics. We performed a video‐streaming experiment over a satellite link for 24 days distributed over 1 year to investigate the effects of rain fade. Based on the measurements, models for the relationships between rainfall rate, power level, packet loss, and video quality are proposed. Furthermore, for both uplink and downlink channel, an adaptive closed loop power control algorithm, with a Proportional–Integral–Derivative controller is designed. This is used for the mitigation of the rain‐induced attenuation in order to guarantee a certain level of Quality of Service and Quality of Experience. Simulation results show the effectiveness of the proposed power control solution and its ability to sustain video quality levels in spite of rain fades. Copyright © 2014 John Wiley & Sons, Ltd.

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Proportional QoS adjustment for achieving feasible power allocation in CDMA systems

Cited by 14 publications

References 26 publications

Network Efficient Power Control for Wireless Communication Systems

Network Efficient Power Control for Wireless Communication Systems

Rapid thermal cycling of injection molds: An overview on technical approaches and applications

QoS provisioning by power control for video communication via satellite links

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