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WO/1986/003908A1 |
A circuit arrangement for producing system carriers and linear pilot frequencies of multi-channel carrier-current overhead telephone lines, which consists of a single oscillator, to the output of which is connected a combination of frequ...
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WO/1986/003909A1 |
The circuit comprises a basic oscillator, a combination of frequency dividers connected at the output of the basic oscillator, amplifiers connected at the output of the frequency dividers, or a filter connected at the output of said divi...
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WO/1986/003357A1 |
Method and apparatus for looping around a digital transmission line (150) at a predetermined channel unit (172) to test the line from either end of the line. To loop around a line at a predetermined channel unit, a maintenance circuit (1...
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WO/1986/003081A1 |
A two-hop communications system utilizing two collocated spacecraft (Se and Sw) and two remote intersatellite exchange (RISE) means (Re and Rw) provides for communications between ground stations located in two or more defined subregions...
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WO/1985/004298A1 |
A high speed and relatively error free communications system which enables the high speed transmission of data at a 19.2 kilobit per second rate. The data is transmitted over the same communications medium as voice transmissions, the dat...
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WO/1985/002733A1 |
A fiber optical digital data transmitting system, which has the capability of transmitting and accurately reproducing digital data signals at the receiver (16) even when the optical signal is attenuated in the fiber optic transmitting me...
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WO/1985/000944A1 |
An analog signal stacking method and apparatus permits transmission of an analog signals of given spectrum width over a narrow band communication circuit (13) having bandwidth approximately equal to the spectrum width of one analog signa...
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WO/1984/004216A1 |
A technique for recovering each of an entire analog speech signal and a modulated data signal simultaneously received over a transmission channel (20) such as a common analog telephone speech channel. In the received composite signal, th...
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WO/1984/004217A1 |
A technique for transmitting an entire analog speech signal (S(t)) and a modulated data signal (D(t)) over a transmission channel (20) such as a common analog telephone speech channel. The present technique multiplexes the entire modulat...
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WO/1984/002044A1 |
A microwave transmitter (10) comprises a signal modulator (12) for receiving an input signal that includes up to 75 video and audio channels and producing an amplitude modulated signal in the microwave frequency range corresponding there...
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WO/1983/003180A1 |
A timed token protocol (Fig. 3) for use in a local area loop communications network. The protocol provides three classes of service with a priority (32) relationship between classes. The three classes allow guaranteed bandwidth, interact...
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WO/1983/002533A1 |
A co-channel communications system which permits a digital data signal to be simultaneously transmitted with a communications medium signal (40) such as telephone voice or television video. The data signal or signals are converted into v...
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WO/1983/002206A1 |
A local area network communications system for a plurality of subscribers has distributed network control and provides random access capability. Each subscriber (130, 230, 330, 430) is connected to a transmission medium (100) via a respe...
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WO/1982/001970A1 |
An in-band signaling system for injecting at least one low frequency audio tone into an audio stereo signal includes a tone generator circuit (30, 32) and a circuit for generation of first and second component signals for each tone, (42,...
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WO1982000074A1 |
Single-channel-per-carrier communication systems (SCPC) it is frequently desirable to add an auxiliary signal, such as low frequency teletypewriter signals (TTY) to a primary signal being transmitted, such as a voice signal, without inte...
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WO/1980/001633A1 |
A communication transmission system includes one or more modulated carrier communication channels in which a receiver has a modified vestigial side band filter (37, 59) for eliminating phase cancellation. Accurate design of the modified ...
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WO/1980/000771A1 |
Technique for creating dedicated in-band, two-way, signaling channels between a master signaling ground station and each remote ground station of a satellite communication system using either an area coverage beam or a plurality of fixed...
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WO/1979/000271A1 |
A FDM/TDM transmultiplexer uses sampling rate multiplication to increase the sampling rate for time division multiplexed (TDM) to frequency division multiplexed (FDM) conversion and decrease the sampling rate for FDM to TDM conversion. T...
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JP7488054B2 |
To provide an antenna control device that transmits, with one signal line, a radio signal radiated from an antenna and a digital phase control signal for controlling directivity of the antenna.An antenna control device includes: a radio ...
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JP2024063365A |
The present invention provides a wireless communication system that can suppress deterioration in communication quality caused by inter-channel interference and/or self-interference due to channel bonding. A transmitting device 100 of a ...
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JP7466581B2 |
Embodiments are provided for WLAN OFDMA operations in uplink and downlink transmissions. For OFDMA downlink transmission, an access point (AP) sends a signaling requesting protection of a transmission channel from access by stations (STA...
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JP2024019827A |
The present invention suppresses deterioration of reception performance in partial reception. [Solution] Physics of TDM (Time Division Multiplexing), which consists of an FSS (Frame Sync Symbol), P (Preamble) 1 symbol, P2 symbol, and one...
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JP7425369B2 |
An apparatus includes a reception processing unit configured to output a frequency division multiplexed signal obtained from a transmission signal transmitted over the wired communication network, an output control unit configured to out...
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JP7417909B2 |
A transmission device that performs multiple-input multiple-output (MIMO) transmission of transmit data using a plurality of fundamental bands. The transmission device includes an error correction coding unit, a mapping unit, and a MIMO ...
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JP7418341B2 |
In a communication system (BS) that includes an access point (B101), a repeater #1 (B102_1), and a repeater #2 (B102_2) and wirelessly communicates with a terminal (B103), the access point (B101) wirelessly communicates with the repeater...
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JP7414402B2 |
A communication apparatus determines whether or not the communication apparatus and one or more other communication apparatuses capable of performing coordinated communication by coordinating with the communication apparatus to use a pre...
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JP2024002810A |
An object of the present invention is to enable a signal processing device used in a wireless terminal or the like to correctly detect signals of each frequency from a communication signal including signals of multiple frequencies with a...
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JP7410509B2 |
To provide a receiving station capable of precisely receiving signals transmitted from a moving transmission station, a radio communication system, and a radio communication method.The receiving station includes: a reception unit that re...
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JP7410070B2 |
The base station simulator 10 as a signal analysis device performs communication with the UE 70 by simulating a base station to test the operation of the communication function of the UE 70, and includes a reception unit 21a that receive...
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JP7378506B2 |
The techniques described herein relate to methods, apparatus, and computer readable media configured to schedule individual orthogonal frequency-division multiple access (OFDMA) resources on an upstream channel to serve a data transmissi...
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JP7372950B2 |
The base station simulator 10 as a signal analysis device performs communication with a UE 70 by simulating a base station to test an operation of a communication function of the UE 70, and includes a reception unit 21a that receives a s...
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JP2023158260A |
To provide an in-vehicle communication system capable of transmitting communication data in a plurality of frequency bands with a simple configuration.An in-vehicle communication system 10 includes: a plurality of ECUs 100 provided in a ...
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JP2023147471A |
To detect FM abnormality with higher accuracy.An optical signal transmission device includes an electrical signal branching unit for branching a carrier signal input from the outside into a first path and a second path, an electrical sig...
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JP2023146416A |
To provide a wireless transmitting device that contributes to uniformity of communication quality of each channel while employing a system that multiplexes a plurality of modulated signals having mutually different frequency bands into o...
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JP2023139533A |
To provide a technique that allows for enjoying both advantages of FDD and TDD in a non-terrestrial network.A communication device includes: a communication unit that communicates with a device on the ground through FD (Full Duplex) on a...
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JP7354070B2 |
To provide a technique for suppressing an increase in the bandwidth of an optical signal transmitted from a control site.A beam control device includes determining means that determines the phase of each of a plurality of modulated signa...
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JP7343452B2 |
Wireless devices, methods, and computer readable media are disclosed. A high-efficiency wireless local-area network (HEW) master station is disclosed. The HEW master station may include circuitry. The circuitry may be configured to gener...
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JP7341129B2 |
A method for bidirectional data transmission, preferably in narrowband systems, between a base station and a terminal device includes providing the terminal device and the base station with frequency reference units and transmitting data...
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JP2023120211A |
To provide a system and method for communicating an orthogonal frequency division multiplexing (OFDM) frame format.An Orthogonal Frequency Division Multiple Access (OFDMA) frame communicated over a 20 MegaHertz (MHz) channel may include ...
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JP7328202B2 |
Certain aspects of the present disclosure generally relate to wireless communication. More particularly, aspects of the present disclosure provide multiplexing schemes which may be suited for the single carrier waveform. For example, som...
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JP7316732B1 |
Kind Code: A1 A device or the like is provided for transmitting and receiving from a spatial multiplexing transmission unit by multi-stream or diversity according to the stream characteristics of a distribution system. A spatial multiple...
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JP7310983B2 |
To enable efficient data transfer.By providing a reception device comprising a processing unit that, when receiving a transmission signal including transfer data, processes a transmission signal including a pilot signal having undergone ...
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JP2023081888A |
To provide a data transmission indication method, an access point, and a terminal.A method includes transmitting, by an access point, orthogonal frequency division multiple access OFDMA physical layer signaling to a terminal, where the O...
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JP2023075211A |
To allow for simultaneous transmission of information and power without using a special configuration for a device on a power receiving side.For example, an electronic apparatus is an electronic apparatus that transmits radio waves in wh...
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JP2023073260A |
To provide an encoded bit transmitting method and a device for improving a spectrum resource utilization rate and a data rate of Wi-Fi systems, relating to a field of a wireless communication technology.A method includes the following. O...
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JP7280714B2 |
A communication device communicates a physical (PHY) frame including a preamble and a data field. The preamble includes a Legacy Short Training Field (L-STF), a Legacy Long Training Field (L-LTF), a Legacy Signal Field (L-SIG), an EHT Si...
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JP2023069181A |
To materialize speeding-up of system switching by shortening a communication time of an intersystem signal of duplicated process input-output devices.Duplicated process input-output devices 1a, 1b comprises a master interface 2 receiving...
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JP2023518704A |
In a communication device and method adapted to communicate with each other, bits of a continuous bitstream are allocated to resource units of different sizes. Various options are disclosed that differ in both the implementation complexi...
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JP7268749B2 |
In a wireless communication system that performs a wireless communication by performing band division into a plurality of sub-spectra, a transmission device includes a band division unit and a transmission gain control unit configured to...
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JP7252873B2 |
To provide a technique that controls, from a central site, beam with a simple configuration.An optical transmitter includes: generation means for generating a plurality of tone signals; multiplexing means for generating a multiplex signa...
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