Matches 1 - 45 out of 45
Match Document Document Title
7400909 Mobile communication apparatus used to communicate information between mobile units  
A mobile communication apparatus is provided, which permits highly efficient communication even between mobile units that cannot communicate directly because of signal-shielding communication...
7143320 Increasing data throughput on a wireless local area network in the presence of intermittent interference  
A method for increasing data throughput on a wireless local area network in the presence of intermittent interference. The method of one embodiment comprises receiving a data packet through a...
7047029 Adaptive transmission system  
A method, apparatus, article of manufacture, and a computer memory structure adaptively controlling a transmission signal from a satellite to at least one terrestrial receiver in a terrestrial...
6985458 Multiple band load balancing satellite communication  
The throughput between a satellite and a plurality of users is controlled by adjusting resources among the users depending on the signal degradation (such as rain fade) experienced by the users. A...
6954618 Method and device for determining the fading coefficients of paths of a multi-path transmission channel linking, in particular, a base station and a cellular mobile telephone  
First estimations of the fading coefficients of a multi-path transmission channel are carried out in the sense of maximum likelihood. Sets of Wiener filter coefficients are stored according to...
6944477 Method of selecting signals compatible  
The invention relates to a method of selecting a signal among N signals, according to which method a validation signal associated with a signal to be selected is placed in an active state by means...
6920333 Decision feedback equalizer with embedded coherent signal combiner  
A receiver in a communication system, for combining various significant components of a multipath fading signal and eliminating all other small components, consists of a signal generator, a...
6862451 Cellular radio signal with additional channel assigned to downlink, corresponding method, system and base station  
The invention concerns a cellular radio telephone signal comprising a symmetrical two-way main channel, including a main uplink and a main downlink, in particular transmitting low or medium speed...
6714761 Meteor burst communication system having the capability of simultaneous communication with multiple remote units  
A meteor burst communication system ( 10 ) has the capability of simultaneously communicating with multiple remote units ( 14 ). The meteor burst system includes a base station ( 12 ) having a...
6665546 High speed, point-to-point, millimeter wave dated communication system  
A point-to-point, wireless, millimeter wave trunk line communications link at high data rates in excess of 1 Gbps and at ranges of several miles during normal weather conditions. This link is...
6643519 Transmitter power control method and apparatus  
Automatic control of the power of the transmitters ( 16 1 and 16 2 ) of a near-end-far-end transceiver pair ( 12 1 -14 1 ) is achieved by first determining whether the strength of the signals...
6611696 Method and apparatus for aligning the antennas of a millimeter wave communication link using a narrow band oscillator and a power detector  
An apparatus and method for aligning the antennas of two transceivers of a point-to-point wireless millimeter wave communications link. A narrow band oscillator power source is substituted for the...
6587442 Enhanced power control algorithms for fixed wireless access systems  
A method for efficient power control in a (CDMA based) fixed wireless system. The method comprises the steps of (1) monitoring a transmission link of the fixed wireless system for an occurrence of...
6556836 Point-to-point, millimeter wave, dual band free space gigabit per second communication link  
A point-to-point, wireless, millimeter wave communications link providing data transmission rates of over 1 billion bits per second (more than 1 Gbps) at ranges of several miles during normal...
6542745 Method of estimating the speed of relative movement of a transmitter and a receiver, in communication with one another, of a telecommunication system  
A method and apparatus for estimating the speed of relative movement of a transmitter and a receiver which are in communication with each other in a telecommunications system. The transmitter and...
6321065 Performance enhancement of open-loop power control for satellite communication systems  
The present invention provides an open-loop method for determining uplink transmission power in a satellite communication system 200 that compensates for antenna pointing error attenuation and for...
6307833 Rain fade mitigation in a data transmission system  
Rain fade mitigation methods and data broadcast systems that provide improved performance in a rain fade environment. The systems distribute data derived from a transmitting processor by way of a...
6169881 Method and apparatus for predicting impending service outages for ground-to-satellite terminal in a satellite communication system  
A method (1300) and apparatus (300) combines a terminal blockage profile for a ground-to-satellite terminal with satellite location and motion data for one or more satellites (12) in a satellite...
6070051 Method and apparatus for predicting service availability for a ground-to-satellite radio of a communication system  
A method and apparatus predicts a ground-to-satellite terminal's (16) percentage of successful communication linkage time to at least one satellite of a communication system in response to a...
5918174 Circuitry and method for initiating communication between communication stations of a radio communication system  
A method and associated circuitry for initiating communication between a network station and a user terminal of a radiotelephonic communication system, such as a satellite-cellular communication...
5901156 Method of processing messages to be transmitted for a data processing arrangement  
A method is disclosed for the operation of a data processing system for motor vehicles including at least two computers and a line connecting the computers for the transmission of messages. This...
5867769 Transmission power control apparatus in earth station for satellite communication  
A control status monitor/decision unit is added to a transmission power control apparatus which determines a transmission power level of a transmission signal to be output from an antenna via a...
5839053 System for transmitting radio signals from mobile terminals to provide space diversity for uplink signals via geostationary communication satellites  
The invention concerns a system for transmission of spatial diversity radio signals via a geostationary main communication satellite and one or more auxiliary satellites "colocated" in the same...
5815796 Method for determining parameters for the design of ground equipment for a satellite link system and a method of transmitting signals in a satellite link system  
A method of determining parameters for the design of ground equipment for satellite link systems using duplex links is disclosed. The method has particular application to determining transponder...
5060292 Transmitting power control system  
A transmitting power control system includes a first-mode arithmetic operation unit for arithmetically obtaining an actual up-link rain attentuation amount based on a total rain degradation amount...
4991164 Automatic transmit power level control in radio links  
A system for stabilization of the coupling value between the transmitted radio signals resulting from cross polar discrimination, using the transmit power level control in radio link systems formed...
4965851 Receiving arrangement with a reception carrier frequency alternately changed from one to another  
In a satellite communication system for carrying out communication between a central station and local stations, each local station includes a receiving apparatus (41) which comprises a converting...
4941199 Uplink power control mechanism for maintaining constant output power from satellite transponder  
Compensation for rain fades in a VSAT communications network is obtained by a uplink power control mechanism incorporated in a master station, which maintains the power output level of the...
4910792 Up-link power control in satellite communications system  
An up-link power from an earth station in a satellite communication system is controlled to compensate rain attenuation caused in an up-link so that the transmission power of the earth station is...
4896369 Optimal satellite TWT power allocation process for achieving requested availability and maintaining stability in ALPC-type networks  
The possibility of overload (saturation-lockup) condition of an ALPC satellite communication network is avoided by a scheme that grants network entry (allocates TWT power) to each link one at a...
4888596 Method and apparatus for determining earth station parameters such as rain margin, with attenuation pads  
Methods and apparatus for determining operating parameters, such as rain margin, of an antenna by attenuating the received signal by, for example, the use of calibrated attenuation pads, the method...
4803738 Radio communications system with reduced D/U ratio variations  
A radio communications system has a node station centrally located in a covering area and a plurality of remote substations. The system comprises a plurality of transceivers in the node station,...
4776035 Lockup detection and avoidance scheme for satellite communication network  
A mechanism for avoiding satellite transponder TWT saturation in an ALPC communication network detects the onset of a lockup condition through an avalanche detector. In response to avalanche...
4731866 Transmission power control system in a satellite communication  
A satellite communication system between small earth stations through a satellite and a relay earth station. The relay earth station has a larger antenna and a higher power transmitter than those...
4685149 Meteor scatter burst communication system  
The specification discloses a meteor burst communication system including at least two spaced apart master stations, in association with a plurality of groups of remote stations spaced at locations...
4630314 Meteor burst communication system  
A meteor burst communication system utilizing a master station and a large number of remote stations. A master station transmits a probing radio signal which, when reflected from a suitably...
4584716 Automatic dual diversity receiver  
A radio receiver capable of receiving signals on at least two different frequencies at the same time is described. A hetrodyne frequency is selected midway between the frequencies and an...
4363132 Diversity radio transmission system having a simple and economical structure  
In a system for frequency-diversity transmission, separate and distinct frequency carriers are obtained from the frequency modulation of an oscillator by a pure frequency with an index such that a...
4287598 Cooperating arrangement for diversity stations  
The present invention relates to a cooperating arrangement for a pair of space diversity stations (30 and 40) interconnected by a communication link (20) wherein each station normally communicates...
4277845 Meteor scatter burst communication system  
The specfication discloses a meteor burst communication system including at least two spaced apart master stations, in association with a plurality of groups of remote stations spaced at locations...
4052670 Space diversity system in PCM-TDMA telecommunication system using stationary communication satellite  
A space diversity PCM-TDMA telecommunication system using a stationary communication satellite, in which fixed delay circuits are respectively inserted in the sending side and the receiving side of...
3909720 Performance monitoring/fault location test set for tropo-radio equipment  
A performance monitoring/fault location apparatus for tropo-radio equipment for measuring the performance status of on-line, in service troposcatter radio equipment.
3676778 SATELLITE COMMUNICATION SYSTEM  
Attenuation caused by precipitation in a radio satellite communication system is minimized by monitoring transmission between the stations and the rate of precipitation at each station so that...
3267380 Diversity phase control system using subcarrier identifying signals  
3821646 Title is not available  
Matches 1 - 45 out of 45