English
Related papers

Related papers: Power control algorithms for CDMA networks based o…

200 papers

Cell-free (CF) extremely large-scale multiple-input multiple-output (XL-MIMO) is regarded as a promising technology for enabling future wireless communication systems. Significant attention has been generated by its considerable advantages…

Information Theory · Computer Science 2023-10-02 Ziheng Liu , Jiayi Zhang , Zhilong Liu , Huahua Xiao , Bo Ai

We consider Internet of Things (IoT) organized on the principles of cell-free massive MIMO. Since the number of things is very large, orthogonal pilots cannot be assigned to all of them even if the things are stationary. This results in an…

Signal Processing · Electrical Eng. & Systems 2020-06-19 Shilpa Rao , Alexei Ashikhmin , Hong Yang

This paper addresses the issue of power flow control for partially faulty microgrids. In microgrid control systems, faults may occur in both electrical and communication layers. This may have severe effects on the operation of microgrids.…

Systems and Control · Electrical Eng. & Systems 2021-06-08 Quanwei Qiu , Fuwen Yang , Yong Zhu

In distributed model predictive control (MPC), the control input at each sampling time is computed by solving a large-scale optimal control problem (OCP) over a finite horizon using distributed algorithms. Typically, such algorithms require…

Systems and Control · Electrical Eng. & Systems 2023-03-28 Giuseppe Belgioioso , Dominic Liao-McPherson , Mathias Hudoba de Badyn , Nicolas Pelzmann , John Lygeros , Florian Dörfler

Transmit power control is one of the most important issues in wireless networks, where nodes typically operate on limited battery power. Reducing communicating power consumption is essential for both economic and ecologic reasons. In fact,…

Systems and Control · Electrical Eng. & Systems 2022-12-13 Alejandro I. Maass , Dragan Nesic , Romain Postoyan , Vineeth S. Varma , Samson Lasaulce

In this paper, we propose a resource allocation algorithm for the downlink of sectorized two-dimensional (2-D) OFDMA cellular networks assuming statistical Channel State Information (CSI) and fractional frequency reuse. The proposed…

Information Theory · Computer Science 2016-11-17 Nassar Ksairi , Pascal Bianchi , Philippe Ciblat

In this paper, a novel optimization model for joint beamforming and power control in the downlink (DL) of a cell-free massive MIMO (CFmMIMO) system is presented. The objective of the proposed optimization model is to minimize the maximum…

Information Theory · Computer Science 2021-07-23 Mohamed Elwekeil , Alessio Zappone , Stefano Buzzi

In recent times adaptive regulation of sampling rates has gained significant attention in research community and researchers has demonstrated it's effectiveness in embedded control applications from different perspectives. In low power…

Systems and Control · Computer Science 2018-02-15 Rajorshee Raha

We consider the scheduling of arbitrary wireless links in the physical model of interference to minimize the time for satisfying all requests. We study here the combined problem of scheduling and power control, where we seek both an…

Networking and Internet Architecture · Computer Science 2011-04-19 Magnus M. Halldorsson

CDMA is a multiple access method in which the user's uses spread spectrum techniques and occupy the entire spectrum whenever they transmit. In wireless communication signal-to-noise ratio (SNR) is the very important parameter that…

Networking and Internet Architecture · Computer Science 2010-02-26 Md. M. Hossain , Md. M. Rahman , Md. A. Alim

A Cell-Free Massive MIMO (multiple-input multiple-output) system comprises a very large number of distributed access points (APs)which simultaneously serve a much smaller number of users over the same time/frequency resources based on…

Information Theory · Computer Science 2017-01-18 Hien Quoc Ngo , Alexei Ashikhmin , Hong Yang , Erik G. Larsson , Thomas L. Marzetta

In this paper, we consider the dynamic power control for delay-aware D2D communications. The stochastic optimization problem is formulated as an infinite horizon average cost Markov decision process. To deal with the curse of…

Information Theory · Computer Science 2015-04-09 Wei Wang , Fan Zhang , Vincent K. N. Lau

This chapter presents joint interference suppression and power allocation algorithms for DS-CDMA and MIMO networks with multiple hops and amplify-and-forward and decode-and-forward (DF) protocols. A scheme for joint allocation of power…

Information Theory · Computer Science 2013-01-28 Patrick Clarke , Rodrigo C. de Lamare

Various system tasks like interference coordination, handover decisions, admission control etc. in current cellular networks require precise mid-term (spanning over a few seconds) performance models. Due to channel-dependent scheduling at…

Networking and Internet Architecture · Computer Science 2016-01-28 Donald Parruca , James Gross

This thesis focuses on link scheduling in wireless mesh networks by taking into account physical layer characteristics. The assumption made throughout is that a packet is received successfully only if the Signal to Interference and Noise…

Networking and Internet Architecture · Computer Science 2008-12-31 Ashutosh Deepak Gore

Cell biasing and downlink transmit power are two controls that may be used to improve the spectral efficiency of cellular networks. With cell biasing, each mobile user associates with the base station offering, say, the highest biased…

Information Theory · Computer Science 2015-12-09 Lex Fridman , Jeffrey Wildman , Steven Weber

This paper proposes a data-driven distributed voltage control approach based on the spectrum clustering and the enhanced multi-agent deep reinforcement learning (MADRL) algorithm. Via the unsupervised clustering, the whole distribution…

Systems and Control · Electrical Eng. & Systems 2020-06-02 Di Cao , Junbo Zhao , Weihao Hu , Fei Ding , Qi Huang , Zhe Chen

Setting the transmit power setting of 5G cells has been a long-term topic of discussion, as optimized power settings can help reduce interference and improve the quality of service to users. Recently, machine learning (ML)-based, especially…

Networking and Internet Architecture · Computer Science 2022-09-28 Peizheng Li , Hakan Erdol , Keith Briggs , Xiaoyang Wang , Robert Piechocki , Abdelrahim Ahmad , Rui Inacio , Shipra Kapoor , Angela Doufexi , Arjun Parekh

In this paper, we investigate the uplink transmit power optimization problem in cell-free (CF) extremely large-scale multiple-input multiple-output (XL-MIMO) systems. Instead of applying the traditional methods, we propose two signal…

Information Theory · Computer Science 2023-02-21 Ziheng Liu , Zhilong Liu , Jiayi Zhang , Huahua Xiao , Bo Ai , Derrick Wing Kwan Ng

Code Division Multiple Access (CDMA) in which the spreading code assignment to users contains a random element has recently become a cornerstone of CDMA research. The random element in the construction is particular attractive as it…

Disordered Systems and Neural Networks · Physics 2015-05-13 Jack Raymond , David Saad
‹ Prev 1 8 9 10 Next ›