摘要:
The present invention relates to secret key generation and authentication methods that are based on joint randomness not shared by others (JRNSO), in which unique channel response between two communication terminals generates a secret key. Multiple network access points use a unique physical location of a receiving station to increase user data security. High data rate communication data is encrypted by generating a random key and a pseudo-random bit stream. A configurable interleaving is achieved by introduction of JRNSO bits to an encoder used for error-correction codes. Databases of user data are also protected by JRNSO-based key mechanisms. Additional random qualities are induced on the joint channel using MIMO eigen-beamforming, antenna array deflection, polarization selection, pattern deformation, and path selection by beamforming or time correlation. Gesturing induces randomness according to uniquely random patterns of a human user's arm movements inflected to the user device.
摘要:
This invention relates to an novel Gluconobacter oxydans 2-ketoreductase useful for the synthesis of chiral alcohols. Also related are isolated nucleic acids encoding G. oxydans 2-ketoreductase enzymes, and enzyme fragments and variants thereof, as well as vectors and host cells comprising these nucleic acids. Further related are isolated G. oxydans 2-ketoreductase polypeptides, and fragments and variants thereof, and antibodies that specifically bind to G. oxydans 2-ketoreductase polypeptides, fragments, or variants. The invention also relates to methods of obtaining isolated G. oxydans 2-ketoreductase nucleic acids, polypeptides, and antibodies, and methods of using G. oxydans 2-ketoreductase in various reactions for industrial or pharmaceutical applications.
摘要:
In wireless communications, a method and system for enhancing signal decoding capability in null areas uses dithering to break up or modify the null areas. The null areas form in overlapping regions of the beams of two antennas or in overlapping regions of a single signal that is subject to multipath. Dithering is used to spread the null areas over a wider region so that a WTRU in an overlap region will not statically remain within a null area.
摘要:
A wireless communication method of exploiting the radio frequency (RF) physical environment to establish a sufficient number of usable multiple paths of RF propagation for facilitating communications. The method is implemented in a wireless communication system including at least one transmitter and at least one receiver. The receiver's antenna is directed towards one of a plurality of reception paths and receives a data stream from the transmitter via the reception path that the receiver antenna is directed towards. The receiver decodes the data stream, reconstructs a modulation pattern of the decoded data stream, and subtracts the reconstructed data stream from a sum of all of the signals received by the receiver via the reception paths. The receiver provides received signal direction information associated with reception paths to the transmitter. The transmitter adjusts and/or eliminates one or more of the reception paths that are unusable based on the signal direction information.
摘要:
An instrument, article and method are provided for minimizing pain during administration by injection of a liquid, such as, an anesthetic. The instrument has a forward end. A rod or lightpipe mounted freely for vibration projects out of the forward end. The article, a single use tip, is composed of a tip sleeve removably mounted on the forward end of the instrument and a tip member removably mounted on the projecting rod or lightpipe to vibrate a preselected injection site on a human or animal. The tip sleeve and tip member are covered by an elastic overmold that enables the tip member to vibrate freely with respect to the tip sleeve and light from the lightpipe to illuminate the injection site. The overmold of the single use tip is torn during removal of the single use tip from the instrument.
摘要:
A technique automatically handles a failure during online data migration from a source array to a target array. While a host initially accesses data from the source array using multipath I/O software, the technique involves (i) transitioning the source array to a passive mode, and the target array to an active mode, and (ii) beginning a data transfer operation which transfers data from the source array to the target array. The technique further involves modifying the data on both the target array and the source array in response to modification commands sent to the target array from the host while the data transfer operation is ongoing. The technique further involves automatically failing back to providing access to the data from the source array in response to an event in which the target array loses communication with the source array for a predefined amount of time.
摘要:
A syndication system and method for the syndication of remote modules. The system comprises a syndication server that receives a module request from a syndication recipient server, identifies one or more modules based on the module request, and outputs data based on one or more module specifications associated with the one or more modules. The module specification comprises a content element and one or more optional preference elements that enable a server to provide preferences to the module.
摘要:
A method for operating a CDMA communications device includes receiving at an antenna array M different summations from a mixture of source signals provided by M signal sources, and providing the M different summations to a receiver assembly. The receiver assembly includes a first signal path and a second signal path parallel to the first signal path. In the first signal path, a mixing matrix including the M different summations of the M source signals is formed, and at least one source signal is separated from the mixing matrix. A determination is made if the separated source signal is an interferer source signal. In the second signal path, the M different summations are delayed corresponding to a delay introduced in the first signal path. The first signal path provides to a summer the separated source signal if the separated source signal is an interferer source signal, and the second signal path provides to the summer the M different summations after being delayed. The summer removes the interferer source signal if present from the M different summations after being delayed.
摘要:
A communications system includes a fixed transmitter and a mobile wireless communications device. The fixed transmitter transmits a source signal defined by a character set made up of symbols. At least one of the symbols in the character set is transmitted at a different power level so that the transmitted source signal appears with linearly independent power level time periods. The linearly independent power level time periods are used by the mobile wireless communications device to populate a mixing matrix for signal separation processing.
摘要:
A communications device includes an antenna array for receiving different summations of source signals from a plurality of signal sources, a receiver coupled to the antenna array for receiving the different summations of source signals, and a signal separation processor coupled to the receiver Processing by the signal separation processor includes creating a matrix based upon the different summations of source signals, with the matrix being defined by linear independent equations with fewer equations than unknowns. The matrix is underdetermined, and parameters associated with the matrix are modified based upon different sets of parameter values, and respective matrix quality factors associated with the different sets of parameter values are determined. The matrix is then biased with a preferred set of parameter values so that the solution space may be narrowed for obtaining a solution.