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7606353 |
Signal amplitude and clock signal frequency selection
In one embodiment, a method is provided. The method of this embodiment may include, in response, at least in part, to receipt at a first node of a request issued from a second node to change from...
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7599660 |
Base station apparatus and control method for controlling channel density
A base station apparatus is provided for adaptively controlling a maximal accommodation channel number per unit area (for example, the coverage area of a cell or sector) in accordance with a...
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7593384 |
Efficient channel quality reporting and link adaptation for multi-carrier broadband wireless communication
Multi-carrier broadband wireless communication can be supported by providing identification information that identifies a group of carrier frequencies that an intended recipient of a transmission...
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7574175 |
Method and system for selective equalization enablement based on modulation type
Aspects of a method and system for selective equalization enablement based on modulation type may be found in a method for processing a radio frequency (RF) signal that comprises receiving a...
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7570927 |
Decentralized wireless communication network and method having a plurality of devices
A wireless communication system and method for determination of the location of a location-incapable device of a decentralized wireless communication network. Upon receipt of location determination...
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7489927 |
Method and system for object tracking and communication
A system and method for communicating between ground stations and mobile satellites effectively eliminates the need for transferring information from one ground station to another. Communication...
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7460831 |
System and method for excluding narrow band noise from a communication channel
A signal filtering system and method that may be used in conjunction with a repeater or an input stage of a base-station. The system may include an analog to digital converter adapted to sample a...
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7454167 |
Apparatus and method for echo cancellation in a wireless repeater using cross-polarized antenna elements
A repeater for re-transmitting uplink and downlink signals in a wireless network. The repeater uses antenna cross-polarization, signal cancellation and digital processing techniques to reduce or...
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7426243 |
Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
Systems and methods for receiving non-coherent layered modulation signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase...
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7421281 |
Methods and apparatus for supporting group communications
Group communications methods and apparatus are described. In particular, methods for granting a mobile device access to a communications resource, e.g., the right to transmit data, associated with...
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7363007 |
Adaptive modulation/demodulation method and radio communications systems
Adaptive modulation/demodulation method in a radio communication system is provided. A modulation multi-level number in a transmission device and a demodulation multi-level number in a reception...
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7339955 |
TDMA communication method and apparatus using cyclic spreading codes
Systems and methods of ultra-wideband communication are provided. In one embodiment, an ultra-wideband communication system divides a stream of data conveying symbols into a plurality of unspread...
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7269403 |
Dual-mode wireless and wired power line communications
This invention presents a dual-mode wireless/wired power line communications that is used to carry signals with variable transmission data rates from 31.0 Mbps to 173.6 Mbps over a power line...
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7171177 |
Communication apparatus and method using human body as medium
Provided is to a communication apparatus and method using a human body as a medium, in which secure/normal data signals are transmitted/received to the inside and outside of a human body...
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7170961 |
Method and apparatus for frequency-domain tracking of residual frequency and channel estimation offsets
Various methods and apparatus for frequency-domain estimation of carrier frequency offsets are provided in which the carrier frequency offset estimate is robust against non-white...
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7162213 |
Transmission method, transmitter, reception method, and receiver
For the purpose of efficient transmission based on the UWB system, first and second baseband waveforms are generated at a cycle equivalent to an integral multiple of a carrier to have a specified...
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7133462 |
Method and apparatus for determining modulation scheme for retransmission in a communication system
A method and apparatus for determining an optimum modulation scheme for a retransmission in a communication system supporting HARQ. When two modulation schemes are available, at an initial...
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7120202 |
Wireless communication apparatus
In a wireless communication apparatus which has the functions of both ASK modulation and QPSK modulation, which can be manufactured at a low cost, and which is small in size, an output terminal of...
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7088951 |
Receiver, method thereof, program thereof, recording medium recording the program, and communication system
The system controller 12 attains program table data from a received electric wave upon turning on the power source. Program table data are rearranged for every ensemble and stored again. The user...
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7069049 |
Apparatus and method for controlling duplication structure of base station transceiver subsystem in a mobile communication system
An apparatus and method for controlling a duplication structure of a Base station Transceiver Subsystem (BTS) is provided. The BTS has N number of sectors including a first sector to an Nth sector...
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7043201 |
Two-way radio communication system and two-way radio communication method
Only a first radio station is equipped with a local oscillation signal source. A signal transmitted to a second radio station includes local oscilaation signal components used to up-convert a...
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7024158 |
Broadband communication satellite
A satellite system is provided that includes a receive antenna system to receive one of C-band and/or Ku-band signals and a transmit antenna system to transmit one of C-band and/or Ku-band signals....
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7024157 |
Local area network computer system utilizing radiating transmission line
A radio frequency communication system utilizing a radiating transmission line for communicating data signals is disclosed. The data signals convey digital data to remotely located data devices,...
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6985716 |
Radio signal broadcast system and method
A first transmitting device is used to transmit a first signal on a first carrier frequency to a relay device. The relay device receives the signal by demodulating the first carrier frequency....
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6944139 |
Digital broadcast system using satellite direct broadcast and terrestrial repeater
A digital broadcast system is provided which uses a satellite direct radio broadcast system having different downlink modulation options in combination with a terrestrial repeater network employing...
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6937878 |
Mobile communication network system using digital optical link
Disclosed is a mobile communication network employing a plurality of digital optical links for providing high speed, more capacity and multimedia services which includes a base station (BS)...
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6934314 |
Method and apparatus for determining characteristics of components of a communication channel
The invention refers to a method and an apparatus for determining characteristics of components of a communication channel. In order to simplify the intersystem coordination in a beginning of life...
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6904266 |
Wireless enhancer using a switch matrix
An improved enhancer is disclosed which uses a switch matrix to increase the isolation between two antennas. For either an reverse link or forward link communication, the enhancer has a first...
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6873823 |
Repeater with digital channelizer
In order to retransmit a communication channel at a specific frequency, a receiver may receive a signal including the communication channel's specific frequency. An analog to digital converter may...
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6871046 |
Radio transmitting apparatus and radio transmitting method
Channel fluctuation estimating section 101 estimates fluctuation amount of the channel between transmitting apparatus 100 and receiving apparatus 200 , and carrier number determining section ...
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6810027 |
Multi-carrier transmitting apparatus and method
A multi-carrier transmitting apparatus and method is described, wherein a plurality of carrier signals are combined in the digital domain and supplied to a D/A converting means ( 3 ) for converting...
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6807402 |
Device for generating RF signals at multiple frequencies
A device for generating a radio frequency electrical signals, delivering at least two separate signals having different frequencies, in the form of signals delivered by different primary sources...
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6738646 |
Base station device and method for communication
An allocation section 101 in a base station apparatus of the present invention sets the transmission rate of a transmit signal for a communication terminal apparatus based on a DRC signal...
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6704544 |
Multi-spot-beam satellite system with broadcast and surge capacity capability
A payload design for a multi-spot-beam satellite communication system includes a plurality of uplink spot beam receivers and downlink spot beam transmitters, and a broadcast transmitting subsystem...
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6684058 |
Universal repeater for communication systems
A system and method for converting carrier frequencies of a wireless communication system is provided. The system and method allow expansion of coverage areas of wireless communication systems,...
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6681122 |
System and method for selectively enabling transmit/receive modes of a radio transceiver
The present invention relates to a method and apparatus for selectively enabling and disabling transmit and receive functions of a radio, and more particularly to a system and method utilizing an...
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6484012 |
Inter-band communication repeater system
A system and method for converting carrier frequencies of a wireless communication system is provided. The system and method allow expansion of coverage areas of wireless communication systems,...
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6370185 |
Translating repeater system with improved backhaul efficiency
The invention discloses a method and apparatus for supporting increased capacity on a backhaul communications link carrier frequency of a wireless communication system the uses a repeater station....
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6314286 |
Control of telecommunications services for subscriber-provided radio communication devices residing in a miniature cellular environment
Telecommunication services are provided to subscriber-provided radiotelephones (50) residing inside an aircraft (20). Telecommunication services are provided while the aircraft (20) is flying and...
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6314272 |
Radio frequency broadcast system for enclosed spaces
Uniform and concentrated radio broadcast signals are obtained employing an antenna structure which uses separate antenna conductors on opposite sides of a radio reception area. The antenna...
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6304613 |
Data carrier having rectifier and improved voltage limiter
A data carrier processing system is provided for receiving an amplitude-modulated carrier signal. The system includes rectifiers and a voltage limiter that limits the d.c. supply voltage that is...
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6275678 |
Method and apparatus for determining an operating point of a non-linear amplifier of a communication channel
For determining the operating point of a non-linear amplifier 2 of a communication channel 1, for example of a transponder in a communication satellite, a first input signal I 1 is transmitted...
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6128496 |
Cellular transceiver station with adjustable time lag
An arrangement of an area covering, cellular radio communication network having cell regions which can be contiguously replicated without interference. A central transceiver station is coupled to a...
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5987304 |
Repeater with variable bandwidth
A mobile telephone repeater with a variable bandwidth is disclosed. The repeater comprises an uplink and downlink, each being provided with amplifier chains (6). Each chain comprises at least two...
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5963847 |
Booster system
A booster system for transmitting a received wave after amplifying it comprises a receiving antenna section, a carrier combining section, a transmitting section, a transmitting antenna section and...
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5924031 |
Interconnective transponder systems and methods
Transponder systems are disclosed for routing signals from a plurality of input frequency channels at each of a plurality of receive antennas to a plurality of output frequency channels at each of...
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5890055 |
Method and system for connecting cells and microcells in a wireless communications network
A wireless communications system includes a number of clusters of repeaters wherein all repeaters within a cluster arc connected to a common hub via respective millimeter-wave radio links. Wireless...
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5887261 |
Method and apparatus for a radio remote repeater in a digital cellular radio communication system
A digital cellular radio communication system having a remote repeater is provided. The communication system includes a central communication site which: transmits and receives signals in a first...
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5809398 |
Channel selective repeater
An improved repeater for receiving and re-transmitting radio signals for a cell in a cellular telecommunication system. The repeater raises the levels and is capable of converting the frequencies...
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5802452 |
Multiple channel radio frequency repeater
A multiple channel radio frequency repeater has a receive port for receiving an input signal from a first antenna and a transmit port for transmitting a frequency shifted output signal to a second...
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