USER DISTRIBUTION TO SUB-BANDS IN MULTIPLE ACCESS COMMUNICATIONS SYSTEMS

    公开(公告)号:US20210021396A1

    公开(公告)日:2021-01-21

    申请号:US17042478

    申请日:2019-03-20

    Abstract: A method of determining a performance metric for a selection of a first user and a second user among a set of candidate users for attribution to a sub-band in a multiple access communications system based on Non-Orthogonal Multiple Access (NOMA), is provided wherein the first user (k1) and the second user (k2) are selected as the pair of candidate users corresponding to an extremum of the ratio between a first term reflecting the total throughput achievable by any pair of the candidate users assigned to the sub-band (s) under consideration, and a second term reflecting the known throughput achieved by that same pair of candidate users over a predetermined preceding period. Implementations include a method of determining a performance metric is presented for attributing users to one or more of a plurality of sub-bands in a multiple access communications system, wherein in an initial assignment phase for a specific sub-band, a first user is selected for that band on the basis of one or more criteria such as user priority. Then a second sub-band user maximizing or minimizing the performance metric.

    Phase reference sharing schemes for continuous-variable quantum cryptography

    公开(公告)号:US10805075B2

    公开(公告)日:2020-10-13

    申请号:US16098829

    申请日:2017-05-10

    Abstract: Systems and associated methods of performing coherent optical communication of quantum information between an emitter A and a distant receiver B are provided, using a local local oscillator. Examples of LLO-based Continuous-Variable Quantum Key Distribution are described. Self-coherent schemes are used, the schemes consisting in deriving both signal and phase reference pulses from the same optical pulse thus ensuring an intrinsic strong signal to reference phase coherence. Different CV-QKD designs implementing various self-coherence phase sharing schemes are described and compared in terms of secret key rate and hardware requirements. Strong phase noise resilience can be obtained with standard telecom equipment such as low cost lasers.

    Methods and devices for sub-block decoding data signals

    公开(公告)号:US10560222B2

    公开(公告)日:2020-02-11

    申请号:US15844734

    申请日:2017-12-18

    Abstract: Embodiments of the invention provide a decoder for decoding a signal received through a transmission channel in a communication system, said signal comprising a vector of information symbols, said transmission channel being represented by an upper triangular matrix, wherein the decoder comprises: a processing unit (309) configured to determine a set of division parameters depending on at least one division metric derived from components of said upper triangular matrix; a decoding unit (311) configured to divide said upper triangular matrix into two or more sub-matrices using said set of division parameters in accordance with a division of said vector of information symbols into two or more sub-vectors, and to determine at least one estimate of each sub-vector of information symbols by applying a symbol estimation algorithm, wherein the decoder is configured to determine at least one estimate of said vector of information symbols from the estimates of said sub-vectors of information symbols.

    Method for managing packets in a network of information centric networking (ICN) nodes

    公开(公告)号:US10530893B2

    公开(公告)日:2020-01-07

    申请号:US15316632

    申请日:2015-06-08

    Abstract: The present invention relates to a method for managing packets in a network of Information Centric Networking (ICN) nodes (1, 2a, 2b, 2c, 2d, 2e), the method comprising: —at a first node (1), performing steps of: ∘ Receiving a request (i) for a data packet (C), and if the data packet (C) is stored, responding to the request (i) by forwarding the data packet (C); otherwise ∘ sending to at least one neighboring node (2a, 2b) of the network a request (i′) for meta-data packets (@), a meta-data packet (@) indicating availability of said data packet (C) at a target node; ∘ receiving in response at least one meta-data packet (@), so as to identify at least one target node (2c, 2e) wherein said data packet (C) is available; ∘ forwarding the request (i) for said data packet (C) toward one selected target node (2c); —at a second node (2a, 2b, 2c, 2d, 2e), performing steps of: ∘ Receiving a request (i′) for meta-data packets (@), and if the data packet (C) is stored, responding to the request (i′) by forwarding a meta-data packet (@) indicating availability of said data packet (C) at the second node (2c, 2e); otherwise ∘ forwarding to at least one neighboring node (2c, 2d, 2e) of the network the request (i′) for meta-data packets (@).

    Method for detecting spam reviews written on websites

    公开(公告)号:US10467664B2

    公开(公告)日:2019-11-05

    申请号:US15419631

    申请日:2017-01-30

    Abstract: A method for detecting if an online review written by a user on a website of a telecommunications network is a spam, using at least one previously-labeled review, a review dataset comprising at least one review to be analyzed, and a spam feature list listing different features of spam reviews, method wherein: a) a weight is computed for each spam feature of the spam feature list, corresponding to the importance of the spam feature in the detection of spam reviews, and based at least on the features of said at least one previously-labeled review, and b) a probability of being a spam for a review under analysis in the review dataset is computed by using at least the weights of the spam features computed at step a) and a comparison between the features of said review under analysis and the ones of at least one review previously-labeled as spam.

    Method for extracting data from a database of data are watermarked according to a reversible watermarking mechaism

    公开(公告)号:US20190294763A1

    公开(公告)日:2019-09-26

    申请号:US16463353

    申请日:2017-11-24

    Abstract: The present invention proposes a rapid, reliable data extraction method for extracting data from a database of data (3) that is watermarked according to a reversible watermarking method. The method according to the invention consists of obtaining, from a first extraction request received from a client terminal (1), a second extraction request (R2) for extracting watermarked data and a third request (R3) applied to the extracted data after it has been de-watermarked. In the presence in the first extraction request of initial selection conditions relating to watermarked properties, these are included in the second request after having been transformed. In the presence in the first extraction request (R1), of aggregation functions relating to a watermarked extraction property, these are included without modification in the third request (R3) so as to supply a result to the client terminal (1) in response to the first extraction request (R1).

    Architecture for testing protocols
    209.
    发明授权

    公开(公告)号:US10374932B2

    公开(公告)日:2019-08-06

    申请号:US15034409

    申请日:2014-11-04

    Abstract: System for testing a protocol, which is active on an item of equipment, testing system including a monitor to continuously capture traces, corresponding to sequences of messages of protocol under test, a filter of the traces captured using formalized properties of the demands of protocol under test, to separate the traces into data and control parts, a temporary storage, and transfer module to transfer the filtered traces to a tester so as to emit verdicts by verifying whether the traces satisfy the demands of the formalized properties of the protocol under test, in the event of saturation of the tester leading to the emission of a notification of load, the transfer module interrupts the transfer of filtered traces to the tester and stores the traces at least partially in the temporary storage, particularly only their control parts, before resuming the transfer of filtered traces when the tester is again available.

    Map decoding method using augmented lattices

    公开(公告)号:US10340956B2

    公开(公告)日:2019-07-02

    申请号:US15026433

    申请日:2014-09-29

    Abstract: The invention relates to a MAP decoding method of a signal received through a noisy channel, the signal being composed of symbols in an alphabet having a non-uniform probability distribution, the symbols being represented by points in a lattice (Λ). The probability distribution of symbols is modeled using a Gaussian distribution. An augmented lattice (Λexp) is formed from the lattice (Λ) and the ratio (β) between variance of the noise and variance of the Gaussian distribution of symbols. Therefore, the disclosed MAP decoding method consists essentially of decoding using an ML criterion searching the point in the augmented lattice closest to the point representative of the received signal (yexp).

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