Patents by Inventor Mohamed-Slim Alouini
Mohamed-Slim Alouini has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10911151Abstract: Joint power allocation and cell formation for energy efficient (EE) visible light communication (VLC) networks networks is described. A set of rules for clustering users and then associating all the access points (APs) to the clustered users based on a proposed metric is developed. The energy efficiency is maximized by allocating power to users based on quality of service (QoS) constraints. The present disclosure jointly allocates the power and decides which APs must participate in communication and which ones must be switched off to minimize inter-cell interference. Numerical results demonstrate a significant improvement in energy efficiency compared to the traditional methods of clustering and AP assignment.Type: GrantFiled: February 26, 2020Date of Patent: February 2, 2021Assignee: King Fahd University of Petroleum and MineralsInventors: Mohanad Obeed, Anas M. Salhab, Salam A. Zummo, Mohamed-Slim Alouini
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Publication number: 20200322190Abstract: A method of detecting a symbol transmitted over a communication channel in a multiple input-multiple output communication system. The method includes receiving a plurality of symbols transmitted over a communication channel of a multiple input-multiple output communication system. A sphere radius is initialized based on attributes of the communication channel. A first matrix of possible transmitted signals is defined as well as a second matrix of received symbols. The matrix of possible transmitted signals is searched using a breadth-first search (BFS). Each level of the search tree is analyzed utilizing matrix multiplication to determine selected symbols satisfying the initialized sphere radius. A maximum likelihood solution is of the transmitted symbols is derived based on the selected symbols.Type: ApplicationFiled: June 18, 2020Publication date: October 8, 2020Inventors: Hatem LTAIEF, Zouheir REZKI, Mohamed Amine ARFAOUI, Mohamed-Slim ALOUINI, David E. KEYES
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Patent number: 10797389Abstract: An embodiment of a non-invasive beamforming add-on apparatus couples to an existing antenna port and rectifies the beam azimuth in the upstream and downstream directions. The apparatus comprises input circuitry that is configured to receive one or more signals from a neighboring node of the linear wireless sensor network; first amplifier circuitry configured to adjust an amplitude of a respective received signal in accordance with a weighting coefficient and invoke a desired phase to a carrier frequency of the received signal thereby forming a first amplified signal; and second amplifier circuitry configured to adjust a gain of the first amplified signal towards upstream and downstream neighbors of the linear wireless sensor in the linear wireless sensor network.Type: GrantFiled: August 11, 2016Date of Patent: October 6, 2020Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Ahmed Bader, Mohamed-Slim Alouini
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Publication number: 20200295841Abstract: Joint power allocation and cell formation for energy efficient (EE) visible light communication (VLC) networks networks is described. A set of rules for clustering users and then associating all the access points (APs) to the clustered users based on a proposed metric is developed. The energy efficiency is maximized by allocating power to users based on quality of service (QoS) constraints. The present disclosure jointly allocates the power and decides which APs must participate in communication and which ones must be switched off to minimize inter-cell interference. Numerical results demonstrate a significant improvement in energy efficiency compared to the traditional methods of clustering and AP assignment.Type: ApplicationFiled: February 26, 2020Publication date: September 17, 2020Applicant: King Fahd University of Petroleum and MineralsInventors: Mohanad OBEED, Anas M. SALHAB, Salam A. ZUMMO, Mohamed-Slim ALOUINI
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Publication number: 20200295840Abstract: Joint power allocation and cell formation for energy efficient (EE) visible light communication (VLC) networks is described. A set of rules for clustering users and then associating all the access points (APs) to the clustered users based on a proposed metric is developed. The energy efficiency is maximized by allocating power to users based on quality of service (QoS) constraints. The present disclosure jointly allocates the power and decides which APs must participate in communication and which ones must be switched off to minimize inter-cell interference. Numerical results demonstrate a significant improvement in energy efficiency compared to the traditional methods of clustering and AP assignment.Type: ApplicationFiled: February 26, 2020Publication date: September 17, 2020Applicant: King Fahd University of Petroleum and MineralsInventors: Mohanad OBEED, Anas M. Salhab, Salam A. Zummo, Mohamed-Slim Alouini
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Patent number: 10775476Abstract: Various examples of methods and systems are provided for direct closed-form finite alphabet constant-envelope waveforms for planar array beampatterns. In one example, a method includes defining a waveform covariance matrix based at least in part upon a two-dimensional fast Fourier transform (2D-FFT) analysis of a frequency domain matrix Hf associated with a planar array of antennas. Symbols can be encoded based upon the waveform covariance matrix and the encoded symbols can be transmitted via the planar array of antennas. In another embodiment, a system comprises an N×M planar array of antennas and transmission circuitry configured to transmit symbols via a two-dimensional waveform beampattern defined based at least in part upon a 2D-FFT analysis of a frequency domain matrix Hf associated with the planar array of antennas.Type: GrantFiled: May 17, 2016Date of Patent: September 15, 2020Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Sajid Ahmed, Taha Bouchoucha, Tareq Al-Naffouri, Mohamed-Slim Alouini
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Patent number: 10778477Abstract: A method of detecting u symbol transmitted over a communication channel in a multiple input-multiple output communication system. The method includes receiving a plurality of symbols transmitted over a communication channel of a multiple input-multiple output communication system. A sphere radius is initialized based on attributes of the communication channel. A first matrix of possible transmitted signals is defined as well as a second matrix of received symbols. The matrix of possible transmitted signals is searched using a breadth-first search (BFS). Each level of the search tree is analyzed utilizing matrix multiplication to determine selected symbols satisfying the initialized sphere radius. A maximum likelihood solution is of the transmitted symbols is derived based on the selected symbols.Type: GrantFiled: September 27, 2017Date of Patent: September 15, 2020Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Hatem Ltaief, Zouheir Rezki, Mohamed Amine Arfaoui, Mohamed-Slim Alouini, David E. Keyes
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Publication number: 20200241285Abstract: An optical mirror diversity receiver for a visible light communication system is provided with an array of photodiodes each having an optical-signal-receiving area, with a mirror positioned between an adjacent pair of photodiodes to preferentially redirect light toward one of the photodiodes while also blocking light that would otherwise be received at the photodiode. An angle-aided mirror diversity receiver is also provided with surfaces of the photodiodes aligned relative to the mirror to yield reductions in correlation.Type: ApplicationFiled: August 31, 2017Publication date: July 30, 2020Inventors: Kihong PARK, Hassan M. OUBEI, Boon S. OOI, Mohamed-Slim ALOUINI
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Patent number: 10644804Abstract: Joint power allocation and cell formation for energy efficient (EE) visible light communication (VLC) networks is described. A set of rules for clustering users and then associating all the access points (APs) to the clustered users based on a proposed metric is developed. The energy efficiency is maximized by allocating power to users based on quality of service (QoS) constraints. The present disclosure jointly allocates the power and decides which APs must participate in communication and which ones must be switched off to minimize inter-cell interference. Numerical results demonstrate a significant improvement in energy efficiency compared to the traditional methods of clustering and AP assignment.Type: GrantFiled: March 11, 2019Date of Patent: May 5, 2020Assignee: King Fahd University of Petroleum and MineralsInventors: Mohanad Obeed, Anas M. Salhab, Salam A. Zummo, Mohamed-Slim Alouini
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Publication number: 20200106595Abstract: A full-duplex autonomous cooperative routing in an ad hoc network is described. A central station transmits a broadcast packet to a plurality of additional communication nodes in the ad hoc network over a half-duplex frequency channel. The broadcast packet allows other communication nodes to autonomously compute frequency channel assignments for forwarding a packet during a full-duplex data transmission. A source communication node transmits the packet on a full-duplex frequency channel over the ad hoc network towards a sink communication node during the full-duplex data transmission after a frequency channel has been assigned for the full-duplex data transmission.Type: ApplicationFiled: May 17, 2018Publication date: April 2, 2020Inventors: Ahmed BADER, Mohamed-Slim ALOUINI
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Patent number: 10609622Abstract: Embodiments of the present disclosure provide techniques for packet routing. In an embodiment, when a transmitting communication device injects a packet into a communication network, a receiving communication device that is closer to a sink or destination than the transmitting communication device relays the packet in a first hop. In a subsequent hop, a receiving communication device evaluates position information conveyed by the transmitting communication device of the first hop to determine whether to forward the packet. Accordingly, a receiving communication device receiver that offers progress towards the sink can elect to forward the packet.Type: GrantFiled: February 8, 2017Date of Patent: March 31, 2020Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Ahmed Bader, Mohamed-Slim Alouini
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Patent number: 10476750Abstract: Various examples are provided for node estimation and topology discovery for networks. In one example, a method includes receiving a packet having an identifier from a first node; adding the identifier to another transmission packet based on a comparison between the first identifier and existing identifiers associated with the other packet; adjusting a transmit probability based on the comparison; and transmitting the other packet based on a comparison between the transmit probability and a probability distribution. In another example, a system includes a network device that can adds an identifier received in a packet to a list including existing identifiers and adjust a transmit probability based on a comparison between the identifiers; and transmit another packet based on a comparison between the transmit probability and a probability distribution. In another example, a method includes determining a quantity of sensor devices based on a plurality of identifiers received in a packet.Type: GrantFiled: August 18, 2016Date of Patent: November 12, 2019Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Mohamed-Slim Alouini, Ahmed Douik, Salah A. Aly Ahmed, Tareq Y. Al-Naffouri
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Publication number: 20190288882Abstract: A method of detecting u symbol transmitted over a communication channel in a multiple input-multiple output communication system. The method includes receiving a plurality of symbols transmitted over a communication channel of a multiple input-multiple output communication system. A sphere radius is initialized based on attributes of the communication channel. A first matrix of possible transmitted signals is defined as well as a second matrix of receiv ed symbols. The matrix of possible transmitted signals is searched using a breadth-first search (BFS). Each level of the search tree is analyzed utilizing matrix multiplication to determine selected symbols satisfying the initialized sphere radius. A maximum likelihood solution is of the transmitted symbols is derived based on the selected symbols.Type: ApplicationFiled: September 27, 2017Publication date: September 19, 2019Inventors: Hatem LTAIEF, Zouheir REZKI, Mohamed Amine ARFAOUI, Mohamed-Slim ALOUINI, David E. KEYES
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Patent number: 10342027Abstract: In accordance with the present disclosure, embodiments of an exemplary scheduling controller module or device implement and improved scheduling process such that the targeted reduction in schedule length can be achieve while incurring minimal energy penalty by allowing for a large rate (or duration) selection alphabet.Type: GrantFiled: August 2, 2016Date of Patent: July 2, 2019Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Ahmed Bader, Mohamed-Slim Alouini, Yassin Ayadi
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Patent number: 10291362Abstract: Apparatuses, computer readable media, and methods are provided for enhancing hybrid automatic repeat request (ARQ) performance. In an example method, a communication device transmits a first element of a vector, where the vector is selected using the information bits to be transmitted as an index in a code book. In some embodiments, this code book is constructed using Linear Constellation Precoding (LCP). If a NACK is received, the communication device transmits a second element of the vector. The process of transmitting elements of the vector continues until an ACK is received or the maximum number of transmission attempts is reached. If an ACK is received, the communication device transmits a first element of another vector of the code book that encodes a second set of information bits. This procedure may continue until all information bits have been transmitted successfully.Type: GrantFiled: December 4, 2015Date of Patent: May 14, 2019Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Muhammad Mehboob Fareed, Hong-Chuan Yang, Mohamed-Slim Alouini
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Publication number: 20190141662Abstract: An approach to localizing a mobile device takes advantage of the device reporting the order of its neighboring base stations (BSs) according to the received power of the pilot signals. Based on the received BS order, the agent is located within the intersection of corresponding higher-order Voronoi cells. Assuming that the BSs are deployed according to a Poisson point process (PPP) and that signals are subject to log-normal shadowing, the tradeoff between the ALR and the localization error probability can be characterized. It is shown that increasing the number of reported BSs generally reduces the ALR and improves the localization accuracy at the expense of increasing the localization error.Type: ApplicationFiled: September 28, 2018Publication date: May 9, 2019Inventors: Moe Z. WIN, Hesham EISAWY, Wenhan Dai, Mohamed-Slim ALOUINI
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Publication number: 20190014526Abstract: Embodiments of the present disclosure provide techniques for packet routing. In an embodiment, when a transmitting communication device injects a packet into a communication network, a receiving communication device that is closer to a sink or destination than the transmitting communication device relays the packet in a first hop. In a subsequent hop, a receiving communication device evaluates position information conveyed by the transmitting communication device of the first hop to determine whether to forward the packet. Accordingly, a receiving communication device receiver that offers progress towards the sink can elect to forward the packet.Type: ApplicationFiled: February 8, 2017Publication date: January 10, 2019Inventors: Ahmed BADER, Mohamed-Slim ALOUINI
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Publication number: 20180227188Abstract: Various examples are provided for node estimation and topology discovery for networks. In one example, a method includes receiving a packet having an identifier from a first node; adding the identifier to another transmission packet based on a comparison between the first identifier and existing identifiers associated with the other packet; adjusting a transmit probability based on the comparison; and transmitting the other packet based on a comparison between the transmit probability and a probability distribution. In another example, a system includes a network device that can adds an identifier received in a packet to a list including existing identifiers and adjust a transmit probability based on a comparison between the identifiers; and transmit another packet based on a comparison between the transmit probability and a probability distribution. In another example, a method includes determining a quantity of sensor devices based on a plurality of identifiers received in a packet.Type: ApplicationFiled: August 18, 2016Publication date: August 9, 2018Inventors: Mohamed-Slim ALOUINI, Ahmed DOUIK, Salah A. ALY AHMED, Tareq Y. AL-NAFFOURI
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Publication number: 20180213543Abstract: In accordance with the present disclosure, embodiments of an exemplary scheduling controller module or device implement and improved scheduling process such that the targeted reduction in schedule length can be achieve while incurring minimal energy penalty by allowing for a large rate (or duration) selection alphabet.Type: ApplicationFiled: August 2, 2016Publication date: July 26, 2018Inventors: Ahmed BADER, Mohamed-Slim ALOUINI, Yassin AYADI
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Publication number: 20180198203Abstract: An embodiment of a non-invasive beamforming add-on apparatus couples to an existing antenna port and rectifies the beam azimuth in the upstream and downstream directions. The apparatus comprises input circuitry that is configured to receive one or more signals from a neighboring node of the linear wireless sensor network; first amplifier circuitry configured to adjust an amplitude of a respective received signal in accordance with a weighting coefficient and invoke a desired phase to a carrier frequency of the received signal thereby forming a first amplified signal; and second amplifier circuitry configured to adjust a gain of the first amplified signal towards upstream and downstream neighbors of the linear wireless sensor in the linear wireless sensor network.Type: ApplicationFiled: August 11, 2016Publication date: July 12, 2018Inventors: Ahmed BADER, Mohamed-Slim ALOUINI