| Document |
Document Title |
|
WO/1999/045683A1 |
A system transmits digital data over an optical fiber at high aggregate data rates and high bandwidth efficiencies. The system includes a modulation stage, a frequency division multiplexer, and an optical modulator. The modulation stage ...
|
|
WO/1999/035772A1 |
The intervals (120, 125) between the spectra (111, 112, 113) of carrier waves are greater than or around the coherent bandwidth, and hence the carrier waves can receive mutual correlative phasing. Therefore, even if the spectrum (112) re...
|
|
WO/1999/034559A1 |
When a communication control circuit (52) and a CPU core (53) wake up after detecting a variation of the input from an input load (60) connected with its node, frame transmission of wake up is performed from the node through a transmissi...
|
|
WO/1999/033295A1 |
A system for transporting radio frequency (RF) signals across an RF network comprises a central transport unit (30) and a remote transport unit (50). The frequencies of at least some of the RF signals to be transported may hop in accorda...
|
|
WO/1999/030450A1 |
In a packet telecommunications environment (100), a method is provided for end to end explicit rate control through a plurality of heterogeneous internetworked networking topologies comprising networks without explicit rate signaling (25...
|
|
WO/1999/030430A1 |
A method of generating I/Q waveforms for CDMA radio transmission by summing the state of I bits to form an Isum value, the state of Q bits to form a Qsum value, and active channels to form a channel sum value, applying the Isum and sign ...
|
|
WO/1999/022474A2 |
The invention relates to a telecommunication system wherein the known multi-code option is used in downlink (direction of transmission: base station to mobile station) and the known multi-slot option is used in uplink (direction of trans...
|
|
WO/1999/017492A1 |
An apparatus for detecting a guard interval length (type) of a transmission symbol among the structure of an orthogonal frequency division multiplexing (OFDM) system receiver, to ensure proper operation of a symbol start detector (320) a...
|
|
WO/1999/017217A1 |
A system which uses redundant storage and redundant communication to provide a robust distributed server system.
|
|
WO/1999/017493A1 |
A fast Fourier transform (FFT) window position recovery apparatus in an orthogonal frequency division multiplexing (OFDM) receiver is provided. This apparatus, in an OFDM system receiver which receives an OFDM symbol comprised of a usefu...
|
|
WO/1999/016188A1 |
The GSM communications system (Global System for Mobile Communications) with one fixed radio station and at least two mobile stations (A, B, C) which exchange radio signals with each other is known. Radio signals are transmitted downward...
|
|
WO1998054850A9 |
A communication system having a plurality of forward channel communications and a plurality of corresponding reverse channel communications from and to a plurality of mobile users. A plurality of collectors are distributed at macro-diver...
|
|
WO/1999/014975A2 |
In a channel structure for use in communication systems, two sets of physical channels, one for the forward link (50) and another for the reverse link (52), are utilized to facilitate communication of a variety of logical channels. The p...
|
|
WO/1999/011016A1 |
Communication apparatus comprising a first xDSL transceiver for conveying an xDSL transmission, a splitter (50) for conveying a POTS transmission via a POTS telephone line and the xDSL transmission via an xDSL telephone line, and a secon...
|
|
WO/1999/005833A1 |
Methods and apparatus for receiving adjacent channel signals wherein adjacent channel interference effects are minimized through joint demodulation of the adjacent channel signals. A channel associated with each signal and each correspon...
|
|
WO/1999/005832A1 |
A multi-signal cancelling demodulator in which signals of interest are demodulated using information obtained during demodulation of adjacent signals. By utilizing detected information in an across-channel fashion, exemplary cancelling d...
|
|
WO/1999/004512A1 |
In order to compatibly adapt the air interface in a wireless telecommunications system with a CDMA, FDMA and TDMA multiple access component, especially a 'JD-CDMA' telecommunications system with hybrid multiple access techniques, to a GS...
|
|
WO/1999/001933A2 |
A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiv...
|
|
WO/1999/000915A1 |
A method of selecting one of a plurality of candidate resources (205, 206) in communication systems (100, 101) for servicing a call includes determining load levels (207, 208) and relative load capacities of candidate resources (205, 206...
|
|
WO/1998/059474A1 |
The invention relates to a method for transferring data, wherein the data to be transferred is divided up into several partial channels and transmitted on several frequency bands, which are arranged in non-equidistant frequency spacing.
|
|
WO/1998/058477A1 |
A wide area communication network includes at least two hub sites which are interconnected by a communication backbone. Each hub site provides wireless coverage in at least one sector. At least two remote sites reside in each sector and ...
|
|
WO/1998/057472A1 |
Data is distributed among the channels of an asynchronous data subscriber loop (ADSL) communications system in accordance with an adaptive algorithm which from time to time measures the signal to noise ratio of the various channels and f...
|
|
WO/1998/049791A1 |
A system for radio frequency communications between a first unit and a second unit. The communications are conducted over a first frequency and a second frequency. The first unit and the second unit each transmit and receive communicatio...
|
|
WO/1998/047236A1 |
A method and system are disclosed for enabling point-to-point and multicast communication in a multiple access network using three types of communication channels, namely one or more upstream payload channels (f2), one or more upstream c...
|
|
WO/1998/047252A2 |
A portable device is disclosed which permits the user to record, edit, play and review voice messages and other audio material which may be received from, and subsequently transmitted to, a remote voice processing or interactive voice (I...
|
|
WO/1998/047251A2 |
A Unified Access Platform (UAP) capable of providing telephone and high speed data services in a number of different local loop configurations. In one embodiment, a broadband digital terminal (130) receives high speed data and digital te...
|
|
WO/1998/044666A2 |
A path verification message is integrated into a signal, or data stream, that traverses along a path (6w) connecting two end nodes (4 and 32) of a distributed restoration network within a telecommunications network. To ensure that the in...
|
|
WO/1998/044667A2 |
Bandwidth management techniques are provided for use in heterogenous wireless personal communications systems, designed to minimize or eliminate interference between different personal communications units. Such units may be of various t...
|
|
WO/1998/044744A2 |
The invention relates to a data transmission and reception method and a receiver in which signals transmitted by various multiple access methods are processed. In the solution provided by the invention, signals transmitted by various mul...
|
|
WO/1998/044656A1 |
A time slot sharing and frequency sharing mobile communication system, wherein FDMA/TDMA signals, CDMA signals, or TS-CDMA signals share the same time slot, and the signals in one time slot share a frequency. The system includes a divers...
|
|
WO/1998/044657A1 |
The invention concerns a method for TDMA transmission using a plurality of selectively accessible carrier frequencies (21�1? to 21�N?), in receivers, by frequency hopping, said plurality of carrier frequencies comprising: a first set...
|
|
WO/1998/043377A1 |
A method (300), system (400), base station (500), head-end unit (600), and subscriber unit (700) provide for efficient resource management in a communication system or group of communication systems supporting a plurality of communicatio...
|
|
WO/1998/043373A1 |
Methods and apparatus for transmitting data over a multi-channel CDMA system are disclosed in accordance with the teachings of the present invention wherein the system includes an encoder (10) for encoding a data stream with error correc...
|
|
WO/1998/043430A1 |
The invention includes a mostly conventional digital television system (2000) to transmit compressed digital signals. A multiplexer (2004) receives a plurality of further input signals, assembles one or more transport streams and transmi...
|
|
WO/1998/042092A2 |
Distortion or noise in detected signals, due to intermodular distortion in transmitting sets which transmit multiple channels simultaneously via the same element or component, is reduced by selecting carrier frequencies such that they ar...
|
|
WO/1998/039939A2 |
A system and a method to automatically select a frequency set in a low-tier radio communication system (22, 24), sharing frequencies with an overlapping high-tier cellular radio system (10), that minimally interferes with the high-tier s...
|
|
WO/1998/038807A2 |
A communication system (106) receives and codes a plurality of information signals (102-105) according to coding assignments to produce a plurality of coded baseband signals (202-205). From these signals, a simulated composite carrier si...
|
|
WO/1998/037706A2 |
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...
|
|
WO/1998/035463A2 |
The high quality PCS communications are enabled in environments where adjacent PCS service bands operate with out-of-band harmonics that would otherwise interfere with the system's operation. The highly bandwidth-efficient communications...
|
|
WO/1998/035464A1 |
The invention concerns an entirely digital device for filtering, decimation and transposition into baseband for extracting and transposing in baseband one of the channels, called useful channel, of a channel frequency division multiplex ...
|
|
WO/1998/028868A1 |
An improved digital bi-directional communications transceiver in which the upstream (24) and downstream (22) portions of the frequency spectrum are allocated different bandwidths and positioned at different locations on the frequency spe...
|
|
WO/1998/027665A1 |
A method and apparatus are provided for communicating data (25) across a communication link (26), in a manner that senses and dynamically adapts to the simultaneous transmission of voice information (30, 32) across the local loop. In acc...
|
|
WO/1998/027645A1 |
A multi-channel transmit amplifier array comprising a multiplicity N of coupled power amplifier elements is disclosed. The number of channels provided for amplifying desired signals for transmission is less than N, by at least one. In th...
|
|
WO/1998/024201A1 |
The method consists in transmitting a composite signal the frequency spectrum (B�t?) of which consists of a first analog spectrum (B�a?) representing a modulation or a single sideband amplitude and of a second digital spectrum (B�n...
|
|
WO/1998/021861A1 |
The invention concerns a multicarrier signal s(t) to be transmitted to digital receivers, in particular in a non-stationary transmission channel, corresponding to the frequency multiplexing of several elementary carriers each correspondi...
|
|
WO/1998/020630A1 |
A satellite direct radio broadcast system (10) assemblies bits of broadcast programs into prime rate increments assembled into a frame (100). Frames (100) are divided into symbols which are demultiplexed into a plurality of prime rate ch...
|
|
WO/1998/019465A2 |
The invention relates to a method of combining several signals and to a base station (200) for combining several signals in a radio network. The base station (200) comprises an antenna (206), modulating means (202) for generating and mod...
|
|
WO/1998/015153A1 |
Method and apparatus for mitigating intermodulation distortion effects in frequency division multiple access (FDMA) communications systems. In one embodiment, an effective transmit power level is determined for each communication signal ...
|
|
WO/1998/015083A2 |
A base station in a radio communication system uses complex bandpass filters ($g(V)�1?, $g(V)�2?, ..., $g(V)�N?) and down-sampling to channelize a wideband signal containing many channels or channel groups.
|
|
WO/1998/010542A2 |
The invention relates to a transmitting and receiving method and a radio system. In a transmitter (TR) the signals (37) to be transmitted are spread coded in means (31) and modulated by subcarriers in means (33). In a receiver (R) the si...
|
