-
公开(公告)号：US20200322190A1
公开(公告)日：2020-10-08
申请号：US16904912
申请日：2020-06-18
Inventor： Hatem LTAIEF , Zouheir REZKI , Mohamed Amine ARFAOUI , Mohamed-Slim ALOUINI , David E. KEYES
IPC: H04L25/03 , H04B7/0413
Abstract: 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.
-
公开(公告)号：US20190288882A1
公开(公告)日：2019-09-19
申请号：US16344545
申请日：2017-09-27
Inventor： Hatem LTAIEF , Zouheir REZKI , Mohamed Amine ARFAOUI , Mohamed-Slim ALOUINI , David E. KEYES
IPC: H04L25/03 , H04B7/0413
Abstract: 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.
-
公开(公告)号：US20180213543A1
公开(公告)日：2018-07-26
申请号：US15745776
申请日：2016-08-02
Inventor： Ahmed BADER , Mohamed-Slim ALOUINI , Yassin AYADI
CPC classification number: H04W72/121 , H04W52/0209 , H04W52/0216 , H04W72/00 , H04W84/18 , Y02D70/00
Abstract: 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.
-
4.发明申请公开(公告)号：US20180052219A1
公开(公告)日：2018-02-22
申请号：US15556656
申请日：2016-05-17
Inventor： Sajid AHMED , Taha BOUCHOUCHA , Tareq AL-NAFFOURI , Mohamed-Slim ALOUINI
IPC: G01S7/02
CPC classification number: G01S7/02 , A61K39/12 , A61K2039/545 , C12N2710/10041 , C12N2710/10043 , C12N2760/14034 , C12N2760/14134 , C12N2760/14234 , G01S13/878 , G01S13/89
Abstract: 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.
-
公开(公告)号：US20230308180A1
公开(公告)日：2023-09-28
申请号：US18021612
申请日：2021-08-11
Inventor： Mohamed-Slim ALOUINI , Muhammad Salman BASHIR
IPC: H04B10/112
CPC classification number: H04B10/1123
Abstract: A terminal is configured to communicate with another terminal using an optical link. The terminal includes an optical transmitter configured to emit an optical beam, an optical receiver configured to receive an optical signal, and a computing device configured to control the optical transmitter and to receive the optical signal from the optical receiver. The computing device is configured to establish the optical link with the another terminal by, (1) dividing an area of uncertainty, where the another terminal is located, into one spherical region (1) and an annulus ring (2)−(1), wherein each of (1) and (2) are spherical regions with radii 2>1, (2) scanning first the spherical region (1) with the optical beam, and (3) scanning second the spherical region (1) and the annulus ring (2)−(1) with the optical beam.
-
Patent Agency Ranking
公开(公告)号：US20210318125A1
公开(公告)日：2021-10-14
申请号：US17051848
申请日：2019-06-11
Inventor： Sajid AHMED , Seifallah JARDAK , Mohamed-Slim ALOUINI
Abstract: A method for autonomous navigating along a given path includes storing at an autonomous navigation system locations associated with a given path; determining a current location of a user; calculating plural positions adjacent to the current location of the user; selecting one position of the plural positions that has a smallest error when compared to the locations associated with the given path; and instructing the user to move to the selected position.
-
公开(公告)号：US20200241285A1
公开(公告)日：2020-07-30
申请号：US16326624
申请日：2017-08-31
Inventor： Kihong PARK , Hassan M. OUBEI , Boon S. OOI , Mohamed-Slim ALOUINI
IPC: G02B26/08 , H04B10/116
Abstract: 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.
-
公开(公告)号：US20230079092A1
公开(公告)日：2023-03-16
申请号：US17801594
申请日：2021-02-22
Inventor： Omar ALKHAZRAGI , Mohamed-Slim ALOUINI , Osama AMIN , Seifallah JARDAK , Boon Siew OOI , Basem SHIHADA
IPC: H04B13/02
Abstract: A communication system includes a first communication gateway arranged proximate to a surface of a body of water and an underwater communication gateway. The underwater communication gateway is configured to receive data from a first underwater communication device using radio frequencies and the ethernet data link layer protocol, to convert the data received from the first underwater communication device from the ethernet data link layer protocol to the second data link layer protocol, and to transmit, using optical radiation and the second data link layer protocol, the data converted by the underwater communication gateway to the first communication gateway. The first communication gateway is configured to convert the data transmitted by the underwater communication gateway from the second data link layer protocol to the ethernet data link layer protocol, and to transmit, using the ethernet data link layer protocol, the data converted by the first communication device to a further communication device.
-
公开(公告)号：US20220261457A1
公开(公告)日：2022-08-18
申请号：US17670601
申请日：2022-02-14
Inventor： Shuping DANG , Basem SHIHADA , Mohamed-Slim ALOUINI
Abstract: A method for estimating a status of a system includes performing independent measurements on the system, associating a value P(γ) of a probability measure P, when applied to a power related metric γ, with a Monte Carlo calculated probability measure P(γ), which depends on (1) a preset threshold Nu of unfavorable events extracted from the measurements, and (2) a total number Ñtot(γ) of the independent measurements for collecting the preset threshold Nu of the unfavorable events, setting a threshold level η uniquely associated with the system, requiring that a critical value γc of the power related metric γ makes a value P(γc) of the probability measure P to be substantially equal to the threshold level η, comparing the total number Ñtot(γ) of independent measurements to a ratio of (1) the preset threshold Nu of the unfavorable events, and (2) the threshold level η, where the ratio is multiplied by a control parameter E, and interrupting the independent measurements if the total number Ñtot(γ) is larger than the ratio, or increasing an output of the system if the total number Ñtot(γ) is smaller than or equal to the ratio.
-
公开(公告)号：US20210288697A1
公开(公告)日：2021-09-16
申请号：US17201405
申请日：2021-03-15
Inventor： Mohamed-Slim ALOUINI , David Elliot KEYES , Hatem LTAIEF , Adel DABAH , Zouheir REZKI
IPC: H04B7/0452 , H04B7/0417
Abstract: A detection method is presented that combines two non-linear approaches, the Sphere Decoder (SD) and the K-best algorithms, to identify symbols transmitted over a communication channel in a multiple input-multiple output (MIMO) communication system. A parallel implementation on a x86 computer system is presented, which reduces the number of evaluations by branching over plural symbols and diversifies the search process, which may rapidly reduce the radius and thus, the time complexity of the computer system.
-
-
-
-
-
-
-
-
-
Search Results
16
records
(took 0.017 seconds)
