Universitat Politècnica de Catalunya - UPC posted this:New device for bidirectional optical linkA method and apparatus for bidirectional optical link using a single optical carrier and colorless demodulation and detection of optical frequency shift keyed data have been developed and patented. Partners to further develop the system and/or to establish commercial agreements along with technical cooperation are sought.
Universitat Politècnica de Catalunya - UPC posted this:Efficient technology to reduce interference in passive optical networksA new method for reducing interference in passive optical networks has been developed and patented. The technology allows the use of low cost lasers whose wavelength does not to be pre-selected, and assures a high speed communication of hundreds of users. Partners to further develop the system and/ or to establish commercial agreements along with technical cooperation are sought.
Universitat Politècnica de Catalunya - UPC posted this:Flexible device to increase bandwidth in bidirectional optical linkA new method for increasing the bandwidth in bidirectional optical links and passive optical networks has been developed and patented. This method uses a flexible simple, integrated and wavelength-agnostic semiconductor device to achieve re-modulation of the incident seed light with simultaneous phase and intensity modulation. Partners to further develop the system and/or to establish commercial agreements along with technical cooperation are sought.
Universitat Politècnica de Catalunya - UPC posted this:Optical communication receiver with an SQRT nonlinear equalizerIn a high bit rate optical transmission, the inclusion of a simple non-linear equalizer implementing the square-root mathematical function, just after the photo-detector and before the conventional electronic equalizer (FIR, MLSE, analog,..), linearizes the overall systems and highly improves the transmission performances.
Universitat Politècnica de Catalunya - UPC posted this:Handover System and Method for 4G/5G NetworksAn innovative handover signaling method, that utilizes the Software Defined Networking (SDN) paradigm, parallel information transfer and elimination of duplicate information to reduce the signaling overhead during the handover preparation and rejection phases, which are critical for an efficient handover.
Universidad de Alcalá-OTRI posted this:Novel Synchronization Process for Multi-carrier or Single-carrier CommunicationsThe research group “Communications, Multirate Systems, and Biomedical Engineering” of the University of Alcala presents a novel synchronization procedure for multicarrier or single carrier systems for narrowband and broadband communications. This procedure allows a precise estimation of the symbol timing offset (STO), and a coarse estimation of carrier frequency offset (CFO). The procedure is based on the inclusion of symmetric extensions in the transmitted symbols for the synchronization, which makes it useful not only for communications systems based on the discrete Fourier transform, but also for transceivers based on the discrete cosine transform (DCT). Among its main applications are communications through single-mode optical fiber, powerline communications, wireless and wireline systems, and in general, all the techniques that use multicarrier and single carrier modulations. The group seeks companies from the telecommunications sector to sign technical cooperation agreements, commercial agreement with technical assistance and patent licensing agreements.
PhotonDelta posted this:Two-dimensional optical beam steering moduleAn interference-free communication system having a central communication controller (CCC) with a wavelength-tunable light source that emits a tunable wavelength optical data signal, and controls the wavelength-tunable light source by conditioning, modulation and wavelength-tuning, the CCC includes a signal-transparent optical cross connect and fiber optic network, a pencil-radiating anten-na (PRA) that is a passive 2-dimensional diffractive module is coupled to the wavelength-tunable light source via the fiber optic network, the cross connect routes the optical data signal to the PRA, the optical data signal is transmitted through a confined optical pencil beam, the PRA deflects the pencil beam in 2 angular dimensions as a function of a wavelength of the pencil beam, the deflected pencil beam is disposed for communication with an opto-electronic communication device,; and a radio return channel that provides upstream communication from the communication device to the CCC includes a lack-of-connection communication between the communication device and the CCC.
Universidad de Alcalá-OTRI posted this:Signal demodulating devices through a Wavelet OFDM receiver (for broadband signal reception)A research group of the Department of Signal Theory and Telecommunications of the Universidad de Alcalá has developed demodulation procedures for broadband signal reception. The proposed approach implements a Wavelet OFDM receiver, based on modulated filter banks according to the Extended Lapped Transform. This modulation technique has been proposed in data transmission for broadband power line communications (PLC), and presents the following characteristics: a) a greater spectral separation between the subcarriers; b) more noise immunity, including narrow band interference impulsive. A block channel equalization is also incorporated in the frequency domain, which includes a parallel sine-modulated filter bank. This invention can be used in all those techniques with multicarrier modulation based on Wavelet OFDM in the transmitter. The group looks for ICT companies to achieve manufacturing agreements and commercial agreements with technical assistance.
UACOOPERA University of Aveiro posted this:
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