Abstract: A case having a protective film for an electronic device includes a soft protective shell having a bottom and a side wall, a hard protective frame configured to removably mount over the bottom and side wall of the protective shell, and a protective film for covering the front portion of the electronic device. The soft protective shell significantly covers hack and side portions of the electronic device, but does not significantly covers a front portion of the electronic device. The protective shell further includes an inverted “L”-shaped recess for receiving and holding in place edges of the protective film. The case may further include a film frame for covering the protective film.

Abstract: Systems, devices and methods related to stacked band selection switch devices. In some embodiments, an RF module can include a packaging substrate and a power amplifier (PA) assembly implemented on a PA die mounted on the packaging substrate. The RF module can further include an output matching network (OMN) device mounted on the packaging substrate and a band selection switch device mounted on the OMN device. The OMN device can be configured to provide output matching functionality for at least a portion of the PA assembly.

Abstract: The invention relates to a method for automatically adjusting a single-input-port and single-output-port tunable matching circuit, for instance a single-input-port and single-output-port tunable matching circuit coupled to an antenna of a radio transceiver. The invention also relates to an automatic tuning system using this method. An automatic tuning system comprises: one user port; one target port; a sensing unit; a single-input-port and single-output-port tunable matching circuit comprising one or more adjustable impedance devices; a signal processing unit which delivers a tuning instruction as a function of one or more temperature signals and as a function of two or more real quantities depending on an impedance seen by the target port; and a tuning control unit which delivers tuning control signals, the reactance of each adjustable impedance device of the tunable matching circuit being determined by at least one of the tuning control signals.

Abstract: A method for disabling multiple-input and multiple-output operation in a communication device includes communicating data using multiple-input and multiple-output operation, wherein the data is communicated using multiple transceiver paths. Further, the method includes receiving position sensor input and disabling at least a portion of one or more transceiver paths, of the multiple transceiver paths, based on the position sensor input.

Abstract: A wireless communication device includes a first antenna from which a first signal is transmitted; a second antenna through which a second signal is received in a frequency band that is different from a frequency band of the first signal; a first signal removal circuit configured to remove a component of a frequency band of the second signal from the first signal when the first signal removal circuit is electrically coupled to the first antenna; and a processor configured to determine whether to electrically connect the first signal removal circuit to the first antenna, based on an output strength of the first signal that is transmitted from the first antenna, when the second signal is received through the second antenna.

Abstract: A processor is configured to control a first communication module and a second communication module by executing a control program stored in a memory module such that communication at a first frequency included in a first frequency band or a second frequency included in a second frequency band is carried out using the first communication module, and such that communication at a third frequency included in a third frequency band is carried out using the second communication module. The first communication module includes an adjustment module. The adjustment module is configured to reduce interference between the first antenna and the second antenna when the communication at the third frequency is carried out.

Abstract: A base station system according to an aspect of the invention includes a baseband unit (BBU) and a radio frequency (RF) unit (RFU) connected to the BBU via a communication line. The RFU (BBU) measures the frequencies of occurrence of sampled values indicated by sampled data that is a digital signal corresponding to a baseband signal to be transmitted to the BBU (RFU), and generates a frequency distribution representing a relationship between the sampled value having occurred and the frequency of occurrence. Furthermore, the RFU (BBU) determines a plurality of thresholds for compressing the sampled data, which are used for quantization processing of the sampled value, in accordance with the generated frequency distribution, and compresses the sampled data by the quantization processing using the plurality of thresholds.

Abstract: Disclosed are a method, system and device for determining an SRS frequency hopping pattern. The method includes: user equipment constructing a parent table which contains a plurality of child tables; determining an SRS frequency-domain reference position p according to NRBUL, CSRS, nRRC and bhop; calculating n?RRC according to NRBUL, CSRS and nRRC and selecting a child table from the parent table according to the n?RRC; according to the nSRS and the selected child table, taking n?SRS=(nSRS mod P)·S as an index to look up the table to obtain an SRS frequency hopping frequency-domain position offset q in each SRS frequency hopping period according to an SRS frequency hopping bandwidth parameter bhop and an SRS-bandwidth parameter BSRS distributed by an eNodeB; calculating r=p+q and calculating an SRS transmission frequency-domain subcarrier offset k0; repeating the processing for P times within one SRS frequency hopping period to obtain an SRS frequency hopping pattern.

Abstract: A system and method are presented for acoustic echo cancellation. The echo canceller performs reduction of acoustic and hybrid echoes which may arise in a situation such as a long-distance conference call with multiple speakers in varying environments, for example. Echo cancellation, in at least one embodiment, may be based on similarity measurement, statistical determination of echo cancellation parameters from historical values, frequency domain operation, double talk detection, packet loss detection, signal detection, and noise subtraction.

Abstract: An optical transmitter includes four LDs, four LDDs that drive the LDs, four monitoring PDs that convert some of optical signals emitted from the LDs to electrical sisals and output them, a controller that controls the LDDs in response to the electrical monitoring signals generated by the monitoring PDs, and a switch that receives the electrical monitoring signals though signal lines from the monitoring PDs and electrically connects only a selected signal line selected by the controller to the controller. The controller outputs a selection signal that selects the selected signal line from the signal lines in order to the switch, and controls the LDDs so that an optical power of the LD corresponding to the PD approaches a predetermined value, according to the electrical monitoring signal outputted from the PD corresponding to the selected signal line.

Abstract: A waveguide includes: a dielectric including two surfaces, an electric field intersecting with the two surfaces; metal-plating layers coating the two surfaces of the dielectric, the electric field intersecting with the two surfaces; and a protective layer coating a periphery of the dielectric including the two surfaces coated with the metal-plating layers. A wireless transmission system includes: a sender configured to send a high-frequency signal; and a receiver configured to receive the high-frequency signal. The waveguide is used as a waveguide configured to transmit the high-frequency signal between the sender and the receiver in the wireless transmission system.

Abstract: A method is for processing an analog channel signal from a transmission channel. The method may include converting of the analog channel signal to a digital channel signal, and performing a channel estimation digital processing of the digital channel signal. The channel estimation digital processing may include for at least one frame, generating transfer functions of the transmission channel, the transfer functions respectively associated with reference symbols of the frame, and averaging processing of the transfer functions to generate an average transfer function. The method may include decoding of symbols of the frame following the reference symbols using the average transfer function.

Abstract: Provided are a method and system for transferring data between a plurality of devices. The method of transferring data from a first device to a second device includes: selecting at least one content; acquiring relevant information about the selected content; storing the acquired relevant information; and providing the second device with the stored relevant information when a communication channel is formed between the first device and the second device.

Abstract: The disclosure concerns an NFC (near field communications) device having an NFC router. The NFC router includes a memory adapted to store data to be shared with an external device and an NFC antenna circuit. The NFC router is capable of operating in a card emulation mode in which the shared data stored by the memory is accessible via the NFC antenna circuit.

Abstract: A method of automatically adjusting a determination voltage used in an induction type power supply system includes detecting an output voltage of a signal analysis circuit; adding a first threshold value to the output voltage to generate a first determination voltage and subtracting a second threshold value from the output voltage to generate a second determination voltage; outputting the first determination voltage as a reference voltage; and comparing a trigger signal of the signal analysis circuit and the reference voltage, in order to generate a first data code; wherein when the step of comparing the trigger signal of the signal analysis circuit and the reference voltage in order to generate the first data code fails, the method further includes outputting the second determination voltage as the reference voltage and comparing the trigger signal of the signal analysis circuit and the reference voltage, in order to generate a second data code.

Abstract: An electronic device with modulization parts includes a first main body, a first wireless transmission port having a first circuit board and a first induction pad, a second main body detachably coupled to the first main body, and a second wireless transmission port having a second circuit board, a second induction pad, an induction cap and an elastic conductive member electrically conducted to the second induction pad and the induction cap. The first circuit board is disposed on the first main body. The first induction pad is electrically connected to the first circuit board. The second circuit board is disposed on the second main body. The elastic conductive member physically supports the induction cap so that the first induction pad induces the second induction pad through the induction cap.

Abstract: Communication device (T1) comprising—An antenna (A1) and physical circuitry (PHY) for receiving a poll command (PC) from a second communication device (T2).—A plurality of entities (D1, D2, D3 . . . Dn) emulating NFC devices,—An arrangement for deciding, for each entity of said plurality of entities, if a response should be sent and if so sending a response (LF1, LF2, LF3 . . . LFn) to said second communication device (T2), containing information related to the respective NFC device.

Abstract: Embodiments of the present invention include systems and methods for detecting and using a cable length value recorded on a cable. In embodiments, the length information may be encoded onto an NFC tag that is located at or near the end of the cable such that, when the cable is inserted into a port, an NFC reader may read the cable length value. In embodiments, the detected cable length value may be used in determining a buffer-to-buffer credit for a channel connection formed between two devices using that cable. Embodiments of the present invention include systems and methods for making the cables or information handling devices that can detect the recorded values.

Abstract: The proposed technology involves a mechanism for selecting, for a user, access points for coordinated multipoint (COMP) uplink reception. The method comprises obtaining, for each of a number of candidate access points, at least one uplink measurement result. The method also involves combining candidate access points to form at least two different sets of access points from the candidate access points. The method comprises estimating, for each one of the at least two different sets of access points, an uplink quality measure based on the uplink measurement results of the considered set of access points, and determining, for each one of the at least two different sets of access points, a measure representative of the number of transmission opportunities available to the user for the considered set of access points over a given period of time.

Abstract: A method for detecting a signal, used in a multi-input multi-output (MIMO) communications system, including: receiving a vector associated with data bits transmitted from the MIMO communications system; finding a first layer from the received vector according to a determining condition, wherein the received vector includes multiple layers, and the multiple layers include the first layer and remaining layers; performing a first scanning procedure for the multiple layers of the received vector to obtain log likelihood ratios (LLR) corresponding to the data bits transmitted from the remaining layers; obtaining a received vector of the first layer according to an equivalent received vector of the remaining layers; and performing a second scanning procedure on data bits of the first layer according to the received vector of the first layer to generate an LLR corresponding to the data bits of the first layer.

Abstract: Systems and methods for closed loop MIMO (multiple input and multiple output) wireless communication are provided. Various transmit formats including spatial multiplexing and STTD are defined in which vector or matrix weighting is employed using information fed back from receivers. The feedback information may include channel matrix or SVD-based feedback.

Abstract: An apparatus and method for a transceiver are provided. The apparatus for the transceiver includes a multiple input multiple output (MIMO) antenna; a transceiver connected to the MIMO antenna; and a processor configured to measure channel gain Hk, based on the received signal, where k is a sample index from 1 to K, Hk is an m×n matrix of complex channel gain known to the transceiver, measure noise variance ?2 of a channel, calculate a per-sample channel quality metric q(Hk, ?2) using at least one bound of mutual information; reduce a dimension of a channel quality metric vector (q(H1, ?2), . . . , q(HK, ?2)) by applying a dimension reduction function g(.); and estimate a block error rate (BLER) as a function of a dimension reduced channel quality metric g(q(H1, ?2), . . . , q(HK, ?2)).

Abstract: The present invention relates to transmit power allocation in multi-carrier, multiplexing MIMO communication systems. The present invention especially relates to a MIMO communication device, a method of assigning transmit power to two or more communication channels and a software program product. A multiple-input-multiple-output, MIMO, communication device according to the present invention comprises a link controller adapted to assign transmit power to two or more transmission channels, each of said transmission channels having preassigned a portion of transmit power for each of a group of subcarriers, said link controller being further adapted to assign, for each subcarrier of said group of subcarriers, at least part of the preassigned transmit power portion of a transmission channel that is not used for transmitting information at the subcarrier, to one or more transmission channels that are used for transmitting information at the subcarrier.

Abstract: The present invention relates to a signal processing unit for pre-processing signals for crosstalk mitigation. In accordance with an embodiment of the invention, the signal processing unit comprises a modulo unit configured to determine individual modulo shifts (?) for respective transmit samples (U) to be transmitted over respective communication channels (H) based on first channel coupling information (L), and to add the modulo shifts to the respective transmit samples, and a linear precoder configured to jointly process the resulting transmit samples based on second channel coupling information (p?) that aim at effectively diagonalizing an overall channel matrix (HP?) resulting from the concatenation of the linear precoder with the communication channels. The present invention also relates to a method for pre-processing signals for crosstalk mitigation.

Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

Abstract: A transmission device comprising: a weighting circuity which, in operation, generates transmission signals of n streams (n is an integer of 3 or more) by weighting modulated signals of the n streams using a predetermined fixed precoding matrix; a phase changing circuity which, in operation, regularly changes each phase of a symbol series included in each of the transmission signals of the n streams; and a transmitter which, in operation, transmits the transmission signals of the n streams from different antennas, the phases of each of the transmission signals of the n streams being changed in each symbol, wherein the transmission signal of an i-th stream has an mi kind of phase change value yi(t) (i is an integer between 1 and n (inclusive), 0?yi<2?, and mi is set in each stream, t is an integer of 0 or more, and indicates a symbol slot), and the phase changing circuity changes the phase in one or more u (u=m1×m2× . . .

Abstract: A transmitter and a receiver of a multiple input multiple output (MIMO) communication system may use two codebooks to share channel information. When the transmitter uses eight transmit antennas, two codebooks may be defined. When the receiver generates two precoding matrix indicators from two codebooks, a combination of the two precoding matrix indicators may indicate a single precoding matrix. Precoding matrix candidates may also be defined.

Abstract: An antenna switching method includes tuning respective signals provided to first and second antennas in a portable electronic device to at least one frequency band. The method may also include connecting the first antenna to an uplink signal path that is for transmissions through the first and second antennas, and performing impedance matching for the first antenna. The method may further include comparing a real-time performance characteristic of the first antenna with a real-time performance characteristic of the second antenna. The method may additionally include, responsive to determining that the second antenna has a stronger real-time performance characteristic than the first antenna while the first antenna is connected to the uplink signal path, switching from the first antenna to the second antenna by connecting the second antenna to the uplink signal path and disconnecting the first antenna from the uplink signal path, and performing impedance matching for the second antenna.

Abstract: A phased array receiver for use with a first received analog signal and a second received analog signal, the phased array receiver including: a first analog to digital converter to generate a first received digital signal; a second analog to digital converter to generate a second received digital signal; a first down-sampler to generate a first down-sampled digital signal; a second down-sampler to generate a second down-sampled digital signal; a first polyphase low pass filter to generate a first filtered down-sampled received digital signal; a second polyphase low pass filter to generate a second filtered down-sampled received digital signal; and a beamforming core to generate a beamformed signal, wherein the first received signal is related to the first filtered down-sampled received digital signal, and wherein the second received signal is related to the second filtered down-sampled received digital signal.

Abstract: A method includes, in a receiver, receiving a signal carrying data using multiple antennas, so as to produce multiple respective input signals. The input signals are divided into two or more subsets. The input signals within each of the subsets are combined in a first diversity-combining stage, to produce respective intermediate signals. In a second diversity-combining stage, the intermediate signals are combined to produce an output signal. The output signal is decoded so as to reconstruct the data carried by the received signal.

Abstract: A system for beamforming employing true time delay. The system includes a deserializer configured to receive a serial data stream and to convert the serial data stream into a plurality of parallel data streams, a zero-insertion block configured to insert zeroes into each of the parallel data streams, and a crossbar switch having a plurality of inputs and an equal number of outputs. The inputs are connected to the zero-insertion block, each of the outputs corresponding to one of the inputs. The crossbar switch is configured, in a first state, to connect each output to the corresponding input, and in a second state, to connect each output to an input different from the corresponding input, the set of outputs being a circular shift of the set of inputs.

Abstract: A transmission method for transmitting a first modulated signal and a second modulated signal in the same frequency at the same time. Each signal has been modulated according to a different modulation scheme. The transmission method applies precoding on both signals using a fixed precoding matrix, applies different power change to each signal, and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.

Abstract: Methods, systems, and devices are described for wireless communication at a wireless communications device. The device may use several antennas to receive a signal, one of which may be shared between two radios. During signal reception, a radio may detect when the shared antenna is abruptly taken over by the other radio. The radio may detect the loss of the antenna by measuring an impedance mismatch. Alternatively, the radio may reference an antenna switch control that is used to facilitate the switch. After detection, the radio may recover from the antenna loss by adjusting signal processing. For example, the radio may modify a maximal ratio combining (MRC) operation. In certain examples, the device may disregard the signal version from the shared antenna in the computation of MRC weights. In some cases, the device may interrupt an MRC weight computation and use MRC weights from a previous calculation.

Abstract: A method and apparatus for beamforming using a polarized antenna in a wireless communication system are disclosed. The apparatus includes a processor configured to process a signal, and a multi-polarized antenna including a plurality of antenna elements, configured to transmit the signal. The plurality of antenna elements include an electric-field dipole antenna and a magnetic-field dipole antenna, and a current is applied to the electric-field dipole antenna and the magnetic-field dipole antenna in the same direction or in opposite directions.

Abstract: Interference information is obtained from one or more interference information sources external to a particular communication system, wherein the interference information is indicative of non-weather related interference that can adversely affect efficacy of the particular communication system. Configurable link parameters of the particular communication system are dynamically adapted and/or resources of the particular communication system are dynamically allocated based on the interference information obtained from the interference information source(s) that is/are external to the particular communication system. Such embodiments can advantageously be performed proactively to prevent or mitigate adverse effects of non-weather related interference on the efficacy of the particular communication system.

Abstract: The present invention relates to an automatic positioning antenna system for receiving multiple satellite signals and a method for tracking satellites to track positions of satellites through a satellite tracking LNB installed separately from a broadcast LNB, recognize the current position through information on tracked satellites and control an antenna to be oriented to the position of a target satellite to quickly receive satellite broadcast signals. The system includes an antenna unit having an antenna to which a broadcast LNB and a satellite tracking LNB receiving satellite signals for satellite tracking are connected, a switching unit for selecting the broadcast LNB or the satellite tracking LNB, a control unit for analyzing signals received through the satellite tracking LNB and controlling the antenna unit to be oriented to a target satellite using tracked satellite information; and a drive unit for moving the antenna unit under the control of the control unit.

Abstract: A device is provided that includes a first platform having a first side, and a second platform having a second side positioned within a predetermined distance to the first side. The device also includes an actuator configured to cause a relative rotation between the first platform and the second platform such that the first side of the first platform remains within the predetermined distance to the second side of the second platform. The device also includes a probe mounted to the first platform, and a plurality of probes mounted to the second platform. The device also includes a signal conditioner coupled to the plurality of probes. The signal conditioner may select one of the plurality of probes based on an orientation of the first platform relative to the second platform. The signal conditioner may then to use the selected probe for wireless communication with the probe on the first platform.

Abstract: A mobile station in a communications system includes hardware and software stored on a tangible computer readable medium that, during operation, cause the mobile station to receive a timeslot assignment from a wireless network and operate based on the received timeslot assignment. The timeslot assignment may be based on whether a timing advance offset is used by the wireless network. The mobile station may also receive an indication from the wireless network, indicating whether a timing advance offset is used by the wireless network. The mobile station may subsequently operate based on the received indication.

Abstract: A method, in a node operating in a network with a control plane, to optimize wavelength retuning on service redials, includes detecting a failure on a link associated with the node; and, for each affected connections on the link, sending a respective release message to an associated originating node via the control plane, the release message including a protect path and a wavelength, wherein the release message is utilized by the associated originating node to redial the affected connections with the protect path and the wavelength determined by the node, to minimize wavelength retuning on the affected connections.

Abstract: A device includes a threshold setting unit that sets a threshold for an input optical power monitor to detect the input optical power to the optical transmission line of an active system; a threshold deciding unit that decides whether the input optical power to the optical transmission line of the active system detected by the input optical power monitor is not greater than the threshold set by the threshold setting unit or not; and an attenuation controller that carries out, when the threshold deciding unit decides that the input optical power is not greater than the threshold, system switching by controlling first variable optical attenuators so as to gradually reduce attenuation of the signal light rays input from the optical transmission line of one backup system, and to gradually increase attenuation of the signal light rays input from the optical transmission line of the active system.

Abstract: A multiport optical switch (such as an N×1 switch) is used to controllably select a specific incoming optical signal that is to be processed by an associated optical channel monitor (OCM). The OCM includes a tunable optical filter and photodetector arrangement, and is configured to measure the optical spectrum of the incoming optical signal and extract information associated with the various optical channels (wavelengths) forming the incoming optical signal (i.e., power, wavelength, OSNR and the like for each channel). The OCM also includes a signal processing component that generates a pair of output control signals, a first signal to control the wavelength scanning process of the tunable optical filter and a second signal to control the setting of the multiport optical switch.

Abstract: This application discloses apparatuses and methods for selecting and tuning of a select mode of a multi-longitudinal mode device seeded or wavelength locked to a spectrum-sliced external wavelength by either self-seeding or broadband light-source seeding through an array-waveguide grating.

Abstract: A hearing system includes a hearing device for wear by a user, the hearing device comprising a speaker, and an optical receiver configured to detect light signals, and generate electrical signals in response to the detected light signals, wherein the speaker of the hearing device is communicatively coupled to the optical receiver, and is configured to provide audio signals based at least in part on the electrical signals. A hearing system includes a hub configured to receive an input from a user of the hub, and generate an output in response to the input, and a light source communicatively coupled to the hub, wherein the light source is configured to provide light signals for reception by a hearing device based at least in part on the output from the hub.

Abstract: Light-based communication (LCom) techniques are disclosed for adaptively adjusting the baud rate of a luminaire to optimize the LCom signal transmitted for an intended receiver device. The adaptive baud rate can be adjusted by a process that includes, for example: determining decoding parameters of the receiver device, the device including a camera for receiving LCom signals, and a display. The process further includes calculating a baud rate suitable for the receiver device based on the decoding parameters, and causing the baud rate to be set at the luminaire. The process may further include at least one of: verifying the baud rate at the receiver device; adjusting the decoding parameters of the receiver device if baud rate cannot be adjusted to meet a current configuration of decoding parameters; and prompting a user to rotate receiver device to improve orientation of the luminaire with respect to a raster direction of the camera.

Abstract: An expandable dock monitor and control system having a communicating pile light assembly. The communicating pile light assembly has an electrical system with a controller assembly. The communicating pile light assembly is mounted onto a pile at a dock. The expandable dock monitor and control system further has a gateway/controller system, a local interface device and at least one sentinel. The sentinel has transmitting circuitry to transmit specific event information to a nearest and/or respective communicating pile light assembly, which relays the transmitted specific event information to the gateway/controller system, which deciphers then notices the local interface device. The controller assembly has an RGB and white light controller section, an accelerometer/remote sensor inputs/relay outputs section, a transceiver/digital address tag section and a power supply section. The expandable dock monitor and control system additionally has a remote interface device and a remote access gateway.

Abstract: A system and method for filtering and enhancing signals from a noise background based on the nonlinear interaction of waves. The system and method amplify low-level signals, hide information in the signals, and then nonlinearly recover the signals. With the present invention, this can be performed for both spatial beams and temporal pulses. The signal self-filters and self-amplifies at the expense of the surrounding noise via the nonlinear medium.

Abstract: A system may include an optical transmitter and an optical receiver. The optical transmitter may generate optical signals associated with sub-carriers, and may provide the optical signals via an optical link. The optical receiver may receive the optical signals via the optical link, and may generate samples based on the optical signals. The samples may be associated with the sub-carriers. The optical receiver may combine the samples to form a time domain sample vector having a particular size, and may generate a frequency domain sample vector, having the particular size, based on the time domain sample vector. The optical receiver may demultiplex the frequency domain sample vector to generate domain sample vectors corresponding to the sub-carriers. The optical receiver may process the frequency domain sample vectors to generate equalized frequency domain sample vectors, and may output the equalized frequency domain sample vectors.

Abstract: Systems and methods are disclosed that generally pertain to provisioning an optical network unit (ONU) by an optical line terminal (OLT) of a passive optical network (PON). An exemplary provisioning system includes a wireless reader incorporated into the ONU and a transponder unit attached to a fiber optic cable coupled to the ONU. The transponder unit includes a storage element in which is stored provisioning information, such a registration ID associated with the ONU. The wireless reader automatically obtains the provisioning information from the transponder when the fiber optic cable is coupled to the ONU and transmits the provisioning information to the OLT via the fiber optic cable as a part of a discovery procedure. The transmission of the provisioning information in this manner eliminates the need for a service technician to visit a customer premise and manually provide the provisioning information via a POTS port of the ONU.

Abstract: A repeater includes: a pressure-tight casing to be arranged on seabed or in sea; and a feedthrough having a plurality of lead sections each configured to connect a circuit housed in the pressure-tight casing with a cable outside the pressure-tight casing, wherein the plurality of lead sections include at least a power wire and an electric signal wire, and at least two of the plurality of lead sections have a difference in length from each other.

Abstract: The present invention relates to a transceiver element for an optical unit of a photoelectric barrier to such a photoelectric barrier. In particular, a transceiver element comprises at least one optical sender, at least one optical receiver and a control element, wherein said control element comprises a driver unit for driving said at least one optical sender to emit radiation and at least one receiver unit for sensing and evaluating electrical signals generated by said optical receiver.