Abstract:
The method comprising passing, a base station or a user terminal, information comprising data signals and encoding, a first and a second turbo encoders, said received data signals, generating two different turbo code blocks comprising a set of systematic and parity bits. Where, in order to enhance detection the two different turbo code blocks are simultaneously transmitted through a wireless OFDM system and wherein the data signals to be encoded by said second turbo encoder are interleaved prior encoding by an external bit interleaver.The system of the invention is arranged to implement the method of the invention.
Abstract:
Methods, a base station and computer programs for performing multiple access in wireless OFDM cellular systems over multipath wireless channels considering both space and frequency domains,The base station 100 comprises a large number of antennas 103 in the form of a two-dimensional array and transmits a given number of signals to a number of users 106, so that each one receives its intended signal (or set of intended signals) without interference to/from the other users 106. The base station 100 includes a scheduler in space-time-frequency dimensions 101 as well as an orthogonal space-frequency processing technique 102 for addressing the users 106. The cellular scenario is assumed where the wireless channel 105 presents significant multipath, thereby resulting in multiple signal components being received by each user 106. Orthogonality of the beams is achieved upon transmission by properly discretizing the spatial domain, while inter-user interference is avoided by exciting only those beams that result in multipath components received by one single user 106.
Abstract:
A system and method are provided for assisting user devices in performing OFDMA downlink interference cancellation, in which an interfering base station transmits a downlink signal in a first slot and a second slot, both slots including cell reference signals (CRSs) for physical channel estimation, the CRS of the second slot is modified to indicate encoded values of parameters characterizing the physical channel according to an encoding procedure, the slots are received by a served user device that detects the physical channel parameters carried by dedicated control signalling and encodes them by the encoding procedure, an unchanged CRS is reconstructed, and the slots are received by an interfered user device obtaining the encoded values and comparing to parameter patterns indicating absence of modifications in the CRSs, wherein if the encoded values are different from the patterns, the interfered user device decodes them to perform interference cancellation of the downlink signal.
Abstract:
The at least one distributed virtual CPE comprising at least one IP Edge node, at least one Carrier Grade NAT node, at least one User Configuration Server and at least one Line Configuration Server, the method creating said at least one distributed virtual CPE upon the reception of traffic from a home in the access line corresponding to said home; modifying said at least one distributed virtual CPE upon a customer request; removing said at least one distributed virtual CPE, upon a traffic inactivity timeout detected in said access line or upon an administrative command; and associating a line identifier and a customer identifier to said at least one distributed virtual CPE, wherein said association, termed vCPE context, is known partially or totally by the at least one IP Edge node, the at least one Carrier Grade NAT, the at least one User Configuration Server and the at least one Line Configuration Server, and is kept active during the whole life cycle of said distributed virtual CPE from the creation to the removal.
Abstract:
Methods and systems to perform textual queries on voice communications. The system has an index service for storing a audio content data sets for voice communications. The audio content data sets include at least three audio content data sets for each voice communication. The three audio content data sets include a first audio content data set generated using a speech-to-text conversion technique, a second audio content data set generated using a phoneme lattice technique, and a third audio content data set generated using a keyword identification technique. The system includes a search engine configured to: receive search criteria from a user, the search criteria having at least one keyword; search each of the first, second and third audio content data sets for at least a portion of the plurality of voice communications to identify voice communications matching the search criteria; and combine the voice communications identified by each search to produce a combined list of identified voice communications.
Abstract:
The method comprising at least one wireless user terminal, UE, connected through a wireless network to a serving base station and a plurality of network cells, each one comprising a base station, said at least one wireless UE: estimating the cell loads of the serving base station and of the plurality of network cells by analysing a downlink air interface load; providing to said wireless network, information about the actual cell load estimation of said plurality of cells, and performing a network cell selection based on said estimated cell loads, wherein said cell selection is performed without any exchange of cell load between said plurality of network cells.
Abstract:
The method comprising: receiving, a controller (106), traffic packets from a device, each one of said traffic packets including a VLAN tag indicating a destination of a second device; analyzing, by a first monitoring unit (101) during a period of time, the bytes content of said received packets and reporting said analysis to said controller (106); receiving, said controller (106), said plurality of different subcarriers to be used for said sending; adding, by a tag unit (102), an embedded S-VLAN tag to said analyzed packets identifying to which subcarrier and to which sliceable bandwidth variable transponder (105) each tagged traffic packets per destination is going to be sent; sending said S-VLAN tagged traffic packets to a switch (104), the latter forwarding them to a given port of said identified sliceable bandwidth variable transponder (105) for sending them via different sub-carriers to its corresponding destination, said plurality of different sub-carriers following a same or different path.
Abstract:
A method for generating a realistic 3D reconstruction model for an object or being, comprising: a) capturing a sequence of images of an object or being from a plurality of surrounding cameras; b) generating a mesh of said an object or being from said sequence of images captured; c) creating a texture atlas using the information obtained from said sequence of images captured of said object or being; d) deforming said generated mesh according to higher accuracy meshes of critical areas;and e) rigging said mesh using an articulated skeleton model and assigning bone weights to a plurality of vertices of said skeleton model; the method comprises generating said 3D reconstruction model as an articulation model further using semantic information enabling animation in a fully automatic framework. The system is arranged to implement the method of the invention.
Abstract:
A method and device for virtualization of terminal devices in mobile communications networks. The present invention introduces the idea of a completely virtualized terminal device. Any interaction through the user interface can trigger appropriate actions, such as connecting to a peer device, but the behaviour of the terminal device would be fully controlled by an operator's device virtualization node which would perform the appropriate actions with the peer device on behalf of the terminal device, irrespective of the type of connection. The complete functionality of the device is virtualized making it independent of the actual device capabilities so the mobile users can get rid of any actual constraints imposed by the terminal device.
Abstract:
A method to provide robustness against noise and interference in wireless communications, a transmitter and computer program products, involving sending to a receiver (13), through a wireless channel (12), information using a constant-envelope waveform with complex baseband representation of the form s[n]=Ac exp{jϕ[n]}. The phase ϕ[n] following the expression ( ϕ [ n ] - ϕ [ n - 1 ] ) = 2 π m · ∑ k = k 0 + 1 k 0 + N a , F M + - 1 x [ k ] exp ( j 2 π kn N ) , and the wireless channel has an Additive White Gaussian Noise component and flat-fading conditions, wherein the transmitter (110) calculates a FFT length, N, and a number of active positive subcarriers, Na,FM+, needed in order to have a given improvement in the signal to noise ratio at the active positive subcarriers of the instantaneous frequency spectrum containing the information; calculates a cutoff subcarrier k0 needed to overcome Doppler, phase noise and carrier frequency offset impairments at the receiver side, and generates a complex baseband signal waveform of the form s[n]=Ac exp{jϕ[n]} carrying information with the FFT length, number of active positive subcarriers and cutoff subcarrier.