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JP3108744B2 |
PURPOSE: To provide a miniaturized and effective noise preventing circuit for a portable telephone set. CONSTITUTION: Concerning the noise preventing circuit for portable telephone set to communicate with a communication channel designat...
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JP3098968B2 |
To provide a system for eliminating the partial overlap of packets and controlling the transmission of a moving station by means of a base station and a radio packet transmission system for compensating an attribute which the moving stat...
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JP2000511751A |
The invention concerns a method of transmitting data from a plurality of sources (22i) to a plurality of receivers (24) via a single gateway (21) using at least two separate data transmission media (23i), said receivers (24) being able t...
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JP2000511750A |
The present invention encompasses a method and apparatus for efficiently communicating complex resource allocations from a central access point or base unit (14) to a mobile unit (10) requesting service. The base unit (14) allocates thes...
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JP2000236284A |
To obtain a correlation detecting device which can easily and surely detect the codes of an M series on which the timing is based, even when signals having different amplitudes are multiplexed on a time-division basis. This device is pro...
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JP3043415B2 |
PCT No. PCT/NL92/00039 Sec. 371 Date Aug. 23, 1993 Sec. 102(e) Date Aug. 23, 1993 PCT Filed Feb. 27, 1992 PCT Pub. No. WO92/16063 PCT Pub. Date Sep. 17, 1992System for broadcasting and receiving digital data within time divisional multip...
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JP3034281B2 |
In a radio tele-communication system of this invention, each mobile station is designed to determine whether a control radio frequency can be used and to determine whether any free time slots are included in the time slots of a plurality...
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JP3021101B2 |
A method of operating a communications system, particularly a FDM-TDD cordless telephony system, in which, in order to expedite handover, a portable secondary station builds up a record of the status and quality of the other FDM channels...
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JP2984061B2 |
In a TDM/TDMA portable radio communications system, a portable handset is compatible for operation in both a frequency-division duplexing (FDD) mode for communication in the licensed portion of the Emerging Technologies frequency band, a...
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JP2984593B2 |
To conduct switching of an oscillation circuit at time slot switching in a short time in a mobile radio system employing time division multiplexing. A switch 15 is used to change over a transmission circuit 16/a reception circuit 17 and ...
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JP2984648B2 |
To make the circuit small in size, light in weight and to reduce the power consumption. In this processing circuit, a mixer 2 applies quasi-synchronization detection to a plurality of frequency multiplex carriers, an A/D converter 3 conv...
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JP2979064B2 |
To enable two kinds of bidirectional simultaneous call transmission at least with prescribed band width by enabling the simultaneous multiplex use of frequency inside an applied network and using low-speed digital voice coding. The recei...
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JPH11313044A |
To provide flexibility for managing the delay of a data transmission system by setting user data speed while using super frame structure and TDD. The number of bits capable of transmission through a super frame is determined, based on th...
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JPH11284587A |
To improve the availability of a communication channel by providing the communication channel with a speech channel, a connection control channel and a link establishment control channel respectively independently. This communication cha...
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JPH11262393A |
To provide a method for identifying an agonist and an antagonist, concerning tumor necrosis-related receptors TR1, TR3 and TR5, by contacting a candidate compound with each of TR1, TR3, and TR5, in the presence of ligand TL3. followed by...
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JPH11251979A |
To enhance transmission speed and to miniaturize a device with a simple constitution in a distribution line carrier device using an FSK signal modem. This device has a general purpose digital signal processor (general purpose DSP) 19 pro...
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JP2933893B2 |
To increase the number of transmission channels without enlarging a time slot number per frame by switching a carrier frequency for each frame and terminating the changeover of a frequency if a halt judgement reference is satisfied. The ...
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JP2931231B2 |
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JPH11215192A |
To make it possible to divide a packet into small packets and to retransmit them even when error correction of an automatic repeat request(ARQ) of a selective repeat(SR) system is performed by providing the packet with a retransmission i...
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JPH11509057A |
A multi-channel modulator for the transmission of telephony signals within a broadband communication system. An interpolation module generates processed I and Q signal components by upsampling filtered I and Q signal components. In turn,...
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JP2927897B2 |
An optical switching network comprises a plurality of optical splitters coupled respectively to inlet highways for receiving wavelength-time division multiplex (WTDM) signals through the respective inlet highways, each of the multiplex s...
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JP2911609B2 |
A periodic wireless data transmission has improved access latency obtaining information regarding users' interest in the information and by arranging the information on an transmission in order of descending popularity. In one embodiment...
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JP2904133B2 |
To perform high-speed data transfer with PHS data communication equipment by using a circuit element (LSI) for a low communication speed and, at the same time, to reduce the cost of the communication equipment by reducing the data errors...
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JPH11154933A |
To increase the transmission efficiency drastically by increasing the number of combination patterns of code words that are available in one communication unit consisting of pluralities of time slots. A primary modulation matrix of a com...
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JPH11103284A |
To provide a time slot allocating method capable of more effectively managing channel capacity. The method is used for allocating time slots in a system provided with plural subscriber's equipments NT connected to a center HUB through co...
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JP2882177B2 |
PURPOSE:To suppress the peak power of a transmitter in a time division multiplex digital radio communication system in which a multi-sub carrier QAM system is used and by which communication with plural slots dividing a digital signal by...
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JP2882176B2 |
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JPH1188283A |
To completely optically execute compression, packet formation, extension or restoration through the use of the spectrum dimension of an optical area by forming a converted input signal showing amplitude modulation according to an input s...
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JPH1141213A |
To transmit the digital data of an asymmetrical shape at an increased transmitting speed by transmitting the incoming-information via an incoming, transmitting the video data, the acoustic data and the digital data such as the external i...
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JPH10336135A |
To form a signal where compression is released and to release the compression of a pulse by means of a whole optical system by superimposing q-number of delay auxiliary signals where an auxiliary signal is delayed on the q-number of auxi...
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JP2833879B2 |
PURPOSE: To simply and surely detect a signal by providing two filters, a comparator circuit, a decision circuit, a time protection circuit and a function for utilizing its output signal as a suppression signal and a band stop signal to ...
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JP2824014B2 |
PURPOSE: To improve transmission delay characteristics by utilizing a tone signal at a different frequency as a request signal. CONSTITUTION: Frequencies f1-f4 and the tone signal for request with a slot number (k) are assigned to miniat...
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JP2820191B2 |
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JP2816598B2 |
In a wireless frequency and time division multiple access (FD/TDMA) communications system having time-slotted communications channels, there is provided a method of and apparatus for hopping wireless communications. It comprises sequenci...
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JP2816349B2 |
A master station communicates with the main network, whilst a set of mobile or fixed sub stations of voice or data users share the channel using time division multiplexing. The number of time division channels available depends on the qu...
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JP2815853B2 |
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JPH10262016A |
To prevent useless dial operations by broadcasting the presence or absence of the plural idle information channels via a control channel of an outgoing channel and selecting at random plural control channels to access them via a terminal...
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JP2804258B2 |
To send data with high reliability at a high speed by using adaptively a frequency hopping(FH) system or a multi-frequency shift keying(MFSK) system depending on the operating state of a channel. When a reception signal from a transmissi...
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JP2790039B2 |
PURPOSE: To provide an optical network capable of handling signals of different transmission speed. CONSTITUTION: Time division multiplexing devices 2-1 to 2-n perform time division multiplexes for plural input signals inputted in parall...
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JP2781762B2 |
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JP2780630B2 |
PURPOSE: To form the signal multiplex transmission system in which an identification signal is sent in a time slot only used for sending a main signal with respect to the signal multiplex transmission system where an analog signal such a...
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JP2777841B2 |
A communication system that provides TDM and FDM communications between communication units. At least two control slots are provided in each TDM frame window to provide communication control information such as channel assignment informa...
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JP2777194B2 |
A terminal-inside signal handing architecture is disclosed which is preferably applied to an extra-large capacity digital integrated network for optical broadband information communications among terminal stations via optical fiber link ...
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JP2762983B2 |
A channel assignment controlling system is disclosed that comprises a terminal unit, a base station, and a channel assignment controlling portion. The terminal unit comprises a demodulator, a modulator, and a channel controller that cont...
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JP2758848B2 |
PURPOSE: To shorten time required for the line allocation of a call designating a specified line. CONSTITUTION: A radio communication controller 100, a moving station 101 and a moving station 102 are provided. The radio communication con...
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JPH10107810A |
To decrease the frequency band required for data communication and to allow a receiver side station to reproduce an original data stream faithfully. In the digital communication system where data communication is conducted between a base...
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JPH1098456A |
To recycle the most of existent network infrastructure by selecting one of code modulators in accordance with at least one piece of transmission channel identification information in a message. A device 38 for receiving the message is pr...
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JP2738385B2 |
To provide a communication equipment with a small scale whose band width is variable in the frequency division multiplex communication. In a multiplexer at a transmitter side, an A/D converter 3 converts each channel signal into a digita...
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JPH1084299A |
To simplify the circuit configuration by designing circuits for each mode provided for transmission/reception purposes in common in the time division multiplex dual mode/dual band radio equipment. In the case of receiving a frequency div...
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JPH1084584A |
To allow the communication equipment to adjust a protocol by providing an operator entry means, an output means, a transceiver section, an adaptive circuit including a 2nd adaptive branch different from a 1st adaptive branch and a micro-...
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