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7251266 |
Method for determining the amplification factors of a data channel and of a control channel of a data transmission system
A method is provided for determining the amplification factors both of a data channel and of a controlled channel of a data transmission system, wherein the data transmission is performed in a...
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7248619 |
Rake receiver and receiving method
In a rake receiver, a correlation-value calculation section calculates correlation values between spreading codes and reception signals from an input terminal and outputs the calculated correlation...
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7248685 |
Three-way call detection using steganography
Three-way call detection is an important component of correctional facility telephone equipment because it helps restrict calling access by certain persons to certain restricted telephone numbers....
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7246237 |
Method and device for the generation of several channels in an IFF type system
A method of interrogation/response in an IFF type Mode 5 communications system comprises at least the following steps: modulating the header of an interrogation message by using an orthogonal or...
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7242708 |
Equalized parallel interference cancellation EPIC for CDMA systems
A new multiuser detection scheme EPIC (Equalized Parallel Interference Cancellation) is disclosed. A rake receiver signal zRake output by a rake receiver is detected, which receives a spread...
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7242707 |
Multiband ultra wideband communications
A multiband ultra wideband (UWB) communication is presented to implement multichannel shaped-pulses in parallel for indoor and outdoor UWB operations. The multiband UWB communication has a...
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7239648 |
Extension mode for wireless lans complying with short interframe space requirement
A method and apparatus enables advanced signal processing in a wireless local area network (WLAN). First and second WLAN transceivers are provided with advanced signal processing capabilities. A...
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7236508 |
Application of complex codes to maximize feeder link utilization
A method of increasing utilization of user link bandwidth for a code division multiple access communications system is disclosed that includes the steps of selecting a set of orthogonal complex...
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7236510 |
Equalizer with decision feedback frequency tracking and bit decoding for spread spectrum communications
A spread spectrum communications system adapted to receive simultaneous signals from multiple transmitters, separates frequency error and equalizes and decodes continuous streams of data sets from...
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7236511 |
Structured adaptive frequency hopping
The invention generally provides a method of intelligent frequency hopping such as in Bluetooth and Home RF networks. The method ( 100 ) includes the acts of sampling a plurality of channels in a...
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7236509 |
Method of communicating information between a transmitter and a receiver using ultrawideband signals
Useful information taking the form of an analog or digital voltage is communicated between a transmitter and a receiver using UWB signals. The transmitter includes a subcarrier modulator, a high...
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7236057 |
Spread spectrum clock generator
A clock signal generator varies a frequency of a digital clock over a selected range of frequencies. The generator employs a divider for lowering a frequency of a clock signal. A counter increments...
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7233627 |
Method for searching pilot signals to synchronize a CDMA receiver with an associated transmitter
A method for synchronizing a CDMA receiver to a transmitter when an adaptive antenna is utilized to receive transmitted data, wherein a receiving antenna system is adapted between a 360° reception...
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7233612 |
Wireless communication deinterleaver using multi-phase logic and cascaded deinterleaving
A deinterleaver module in an OFDM wireless transceiver includes partitioned memory banks for storage of code word fragments from an interleaved data stream, each code word fragment associated with...
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7230973 |
Multi-user detection method with accelerated sphere decoding
A method is provided for detecting a plurality of symbols (d k (i)) transmitted by or for a plurality K of users, each symbol belonging to a modulation constellation. Filtering of a received signal...
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7230972 |
Method and system for collecting and transmitting data in a meter reading system
A method for improving gap coverage in data collection in an automatic meter reading system is disclosed that reduces overall system cost while improving data collection. A transceiver in the...
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7230971 |
Random number generator
The present invention is a method and apparatus for providing a pseudo random sequence for a spread spectrum system that prevents interception and provides real estate and power consumption...
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7230970 |
Apparatus and method for locating nonlinear impairments in a communication channel by use of nonlinear time domain reflectometry
A series of time domain reflectometry (tdr) measurements are made on a channel having nonlinear impairments as well as linear impairments. In a given measurement, the reflected signals from the...
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7227886 |
Synchronization strategy and architecture for spread-spectrum receivers
An apparatus for synchronizing the reception of a spread-spectrum signal includes a synchronization apparatus having a code-matched filter, a running average unit coupled to the filter, a peak...
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7224711 |
System and method for the mitigation of spectral lines in an ultrawide bandwidth transceiver
A method and an apparatus are provided for mitigating spectral lines in a wireless signal. First a code word is generated that is made up of a plurality of binary or ternary encoded pulses. Then a...
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7221695 |
Method for communicating scrambling code ID in mobile communication system
Disclosed is a method for transmitting a channel signal in a base station of a mobile communication system which scrambles a common channel signal using a primary scrambling code for identifying...
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7221704 |
All digital implementation of clock spectrum spreading (dither) for low power/die area
A digital circuit configured to spread a clock train spectrum includes a clock configured to generate the clock train, and a variable divider configured to divide the frequency of the clock train...
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7221911 |
Multi-band ultra-wide band communication method and system
The present invention provides ultra-wide band communication systems and methods, including multi-band ultra-wide band communication systems and methods. Methods and systems are provided in which...
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7218621 |
Method for dynamic allocation of channels in a code division multiple access packet data system
A CDMA packet data system is disclosed that can dynamically allocate channels in the CDMA packet data system). Using the disclosed dynamic allocation method, the utilization efficiency of multiple...
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7218663 |
Communication system in which arbitrary number of communication apparatuses form group to communicate with each other, and the communication apparatus
In a communication system having a plurality of communication apparatuses, an arbitrary number of communication apparatuses form a group, and group identification information for group...
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7218617 |
Transmission method of downlink pilot channel in CDMA mobile communication system, and CDMA mobile communication system
A pilot channel transmission method is provided of transmitting a pilot channel through a downlink from a base station in a CDMA mobile communication system including base stations. Each base...
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7215935 |
Segmented CDMA searching
Techniques for segmented CDMA searching are disclosed. In one aspect, a searcher comprises a plurality of storage elements selectable for performing a plurality of segmentable search tasks, each...
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7212563 |
Real-time locating system and method using timing signal
A location system includes a plurality of signal readers for receiving signals from a wireless transmitter to be located. The signals include a wideband, spread spectrum signal and a timing marker...
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7209523 |
Ultra-wideband receiver and transmitter
A waveform-adaptive ultra-wideband (UWB) transmitter and noise-tracking UWB receiver for use in communications, object detection and radar applications. In one embodiment, the output of an...
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7209514 |
GPS receiving apparatus and GPS satellite signal receiving method
Disclosed is a GPS receiving apparatus including a synchronous acquisition unit and a synchronous hold unit. The synchronous acquisition unit detects a correlation between a spread code of a...
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7206331 |
Transmission method for paging indication channels in code division multiple access mobile communication system
Transmission methods for a paging indication channel in code division multiple access (CDMA) mobile communication system are provided, wherein signals are transmitted when paging indication bits...
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7203488 |
Flexible software radio transceiver
A method and apparatus is disclosed for receiving a wireless wideband signal and transmitting a converted signal to a transmitting unit. The transmitting unit may or not be wireless. The apparatus...
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7203464 |
Rake receiver having several fingers and method of processing an incident signal therein
Address pointers (PTFi) associated with corresponding fingers are set to the addresses of a memory means (MM) capable of storing a number of symbols larger than the maximum delay between the paths,...
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7197062 |
Method and apparatus to detect and decode information
Briefly, in accordance with an embodiment of the invention, a method and apparatus to detect and decode information is provided, wherein the method includes sampling a radio frequency (RF) impulse...
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7194018 |
Apparatus for searching multipath in spread spectrum communications system and method thereof
A multipath searching device includes a radio front-end for converting a received radio signal into a baseband signal and for outputting the baseband signal. A profile calculating unit is included...
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7194283 |
Method and apparatus for communication using multiple communication protocols
Methods and apparatus are disclosed for communicating via a radio channel to reduce radio frequency (RF) interference between transceiver systems within an electronic device.
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7187708 |
Data buffer structure for physical and transport channels in a CDMA system
A buffer structure for storing symbols received via a number of (e.g., physical or transport) channels. Each channel is associated with a particular time interval (e.g., a radio frame period or a...
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7187705 |
Analog spread spectrum signal generation circuit
An analog spread spectrum signal generation circuit. A clock generator generates a periodic signal. A plurality of switchable analog loading elements each load the periodic signal by a respective...
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7184457 |
Spread spectrum path estimation
Spread spectrum rake receiver estimates number of paths within a chip interval and assigns corresponding fingers. Cross-correlation matrix eigenvalues or direct BER estimates for differing numbers...
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7184460 |
Spread spectrum communication system with automatic rate detection
A multi-channel direct sequence spread-spectrum communication system with the capability of automatic rate detection consists of a plurality of signal channels and a plurality of data channels....
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7180873 |
Spread spectrum code division destination access (SS-CDDA) for satellite communication system with distributed gateways
A code division multiplexing system for a link between components of a satellite communications system is disclosed where, using spread spectrum techniques, channel blocks are each spread by a...
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7180963 |
Digital receiver capable of processing modulated signals at various data rates
A digital receiver is enabled to process modulated signals at various data rates including a sampling circuit for receiving modulated signals and outputting digitalized sampled signals, a matched...
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7177341 |
Ultra wide bandwidth noise cancellation mechanism and method
A mechanism and method are provided for self-canceling noise generated in a UWB receiver and for providing multi-mode operation for the receiver. Noise is canceled by generating a first set of...
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7177342 |
Apparatus and method for transmission beam forming of antenna array in a mobile communication system
An apparatus and method in which a base station transmitter transmits the common beam to all mobile stations in a base station via an antenna array having at least two antennas, and forms a traffic...
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7177362 |
Apparatus for adaptive resolution of phase ambiguity value
An apparatus for resolution of phase ambiguity is disclosed. The apparatus receives a modulated signal and resolves a phase ambiguity of the modulated signal while recovering the modulated signal...
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7174141 |
Apparatus, and associated method, for facilitating communications in a radio communication system through use of ultrawide band signals
Apparatus, and an associated method, for a radio communication system having a sending station and a receiving station. The sending station sends data pursuant to a communication service and...
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7170922 |
Transmission timing control device, digital roll-off filter, and mobile radio terminal for digital radio communication
In a mobile radio terminal at transmission timing control device, transmit data spread-modulated is delayed by a timing control portion with a timing of reception as a reference by a predetermined...
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7167059 |
Circuit for generating spread spectrum clock
Circuit for generating a spread spectrum clock (CGSSC) that employs a mechanism to modulate the input voltage (V_ctrl) to the VCO to achieve dithering. The CGSSC includes a voltage controller...
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7167525 |
Ultra-wideband communication through twisted-pair wire media
Methods and apparatus that transmit ultra-wideband pulses through twisted-pair wire media are provided. One method includes transmitting an ultra-wideband pulse through the twisted-pair wire media...
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7167502 |
Zero-overhead symbol rate adaptation system for OVSF code
A communication system transmits orthogonally encoded data at a symbol rate which is selected from a plurality of symbol rates. The data is encoded in a plurality of packets, each packet having a...
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