Match Document Document Title
7756219 Low-if multiple mode transmitter front end and corresponding method  
A WLAN transmitter capable of transmitting data signals modulated in accordance with an individual one of at least two different modulation schemes and corresponding methods and integrated circuit...
7756000 Spread baseband injected pilot carrier  
A system for communicating includes a transmitter that has an encoder and baseband modulator that encodes and modulates a sequence of data symbols as a payload data constellation to be...
7746919 Pilot aided adaptive minimum mean square interference cancellation and detection  
A modified adaptive minimum mean square error (MMSE) receiver detects a spread spectrum signal, minimizing interference among multiple users. The receiver receives multiple pilot bits and...
7742775 Random phase multiple access system with location tracking  
A method of determining the location of a communication tag in a random phase multiple access communication network is disclosed. A ranging request signal that is spread using a first pseudo-noise...
7738540 Wireless transmission system, wireless station used therein and method used therefor  
A wireless transmission system capable of performing a multi-station simultaneous transmission of data, that is, simultaneously transmitting data by wireless to a plurality of stations. The...
7738531 Method and apparatus for reducing code phase search space  
A GPS communication system including a server and a client, each including a GPS receiver, for reducing the code phase search space of the GPS receiver of the client. The communication system...
7733946 Terrestrial repeater with redistribution of pseudo-random codes on different carrier frequencies  
This invention concerns a terrestrial repeater (RF) dedicated to a hybrid communication network comprising a satellite for transmitting to terminals (and at least to the repeater) signals (SPI) in...
7733939 Low-rate long-range mode for OFDM wireless LAN  
A system for implementing an orthogonal frequency division multiplexing scheme and providing an improved range extension. The system includes a transmitter for transmitting data to a receiver. The...
7729408 Encoding scheme for data transfer  
A spread spectrum slip time encoding scheme encodes data values with one or more Pseudo Noise (PN) codes and generates a corresponding PN encoded data stream. Other data values are encoded into...
7724802 Radar apparatus  
A radar apparatus includes a transmission section, a delay device, a reception section, a switch control section, a switching frequency detection section, and a relative distance calculation...
7720133 Wireless communication apparatus, wireless communication method, propagation measurement apparatus and propagation measurement method  
Disclosed is a wireless communication apparatus for receiving a code-spread transmission signal. The wireless communication apparatus includes: an RF section; and a baseband section, wherein, in...
7720130 Efficient receiver architecture for transmit diversity techniques  
Transmit diversity (TD) has become a common technique used in modern wireless communications systems to improve performance. TD uses multiple antennas (e.g., 110 and 111) at a transmitter (e.g.,...
7711030 System and method for spatial-multiplexed tropospheric scatter communications  
A method is described comprising: transmitting a training signal from each antenna of a base station to each of a plurality of client devices utilizing tropospheric scatter, each of the client...
7706428 Low complexity inter-carrier interference cancellation  
Inter-carrier interference (ICI) in a kth sub-carrier of an orthogonal frequency division multiplexing (OFDM) signal received at time t is reduced, wherein the received OFDM signal comprises a...
7701998 Radio signal positioning  
Positioning of a mobile signal transmitter. A respective distance between the transmitter and each of a plurality of sensors is determined based on a direct sequence spread spectrum signal. A...
7697590 Communicating apparatus and communicating method  
A chaos spreading code c(n) is inputted to a spreading unit 32. Data D1 and c(n) are multiplied in the spreading unit 32. A chaos spreading code d(n) is inputted to a spreading unit 42. Data D2...
7688900 Interleaver decorrelation in data transmitting and receiving devices  
A data transmitting device for transmitting data on a channel within a CDMA system may simultaneously convey data with a plurality of other data transmitting devices on one channel. The data...
7684378 Method and apparatus for estimating channelization codes in a wireless transmit/receive unit  
A method and apparatus for estimating channelization codes in a wireless transmit/receive unit (WTRU) using blind code detection (BCD). A WTRU receives communication bursts and detects a midamble...
7680174 Method and apparatus for forward link power control  
A forward link power control mechanism measures the reverse link power control bits which are transmitted on the forward traffic channel. At the remote station, the reverse link power control bits...
7668276 Phase adjustment apparatus and method for a memory device signaling system  
Apparatus and methods are disclosed for adjusting phase of data signals to compensate for phase-offset variations between devices during normal operation. The phase of data signals are adjusted...
7664164 Correlation apparatus and method for accomodating spreading code frequency offset  
An apparatus and method for correlating a signal over a correlation interval while accommodating spreading code frequency offset is described. In one embodiment, the apparatus includes a plurality...
7653120 Channel-adaptive waveform modulation  
A method for transmitting a sequence of data blocks of equal length includes obtaining part of a matrix for the impulse response function of a communication channel between a transmitter and a...
7653148 System and method for delivery of video, content on demand and IP packets  
A method and apparatus for modulating an input signal comprised of an ordered series of samples separated by a substantially constant period T comprising the steps of providing a carrier signal,...
7653118 Chirped surface acoustic wave (SAW) correlator/expander  
A surface acoustic wave (SAW) expander based transmitter and correlator based receiver comprises SAW devices that perform expander or correlator functions based on the types of signals inputted to...
7639725 System and method for multi-phase composite PN code generation  
A phase division multiple access (PDMA) system is provided. The PDMA system includes at least one receiver logic combiner adapted to generate a plurality of composite PN codes. Each of the...
7636381 System and method for distributed input-distributed output wireless communications  
A system for dynamically adapting the communication characteristics of a multiple antenna system (MAS) with multi-user (MU) transmissions (defined with the acronym MU-MAS), such as a...
7633995 System and method for receiving spread spectrum encoded bursts using a common spreading code  
A technique for receiving multiple spread spectrum bursts is disclosed. Each spread spectrum burst is encoded with a common spreading code and may include an individual message and unique signal...
7633997 Digital data exchange device in a CDMA system  
The invention relates to a device for exchanging digital data between several sources and at least one hub in a CDMA system, characterised in that it comprises a number n of digital...
7627061 Communication breaking device and method thereof  
A communication breaking device for breaking communication of an apparatus which communicates by modulation and demodulation using a predetermined code sequence. The predetermined code sequence is...
RE40997 Spread spectrum communication transmitter and receiver, and CDMA mobile communication system and method  
A transmitter used in a CDMA mobile communication system includes a pilot channel transmit unit which intermittently transmits a pilot signal in a spread spectrum formation, and traffic channel...
7620005 Method and apparatus for code assignment in a spread spectrum wireless communication system  
Method and apparatus for code assignments in a spread-spectrum wireless communication system incorporating a Large Area Synchronized-Code Division Multiple Access (LAS-CDMA) protocol. The method...
RE40986 Channel simulator for mobile systems  
A device and a method at a mobile communication system which provide a flexible and realistic way of emulating the time dispersive qualities and the broadband frequency correlation qualities of a...
7620095 RF modem utilizing saw device with pulse shaping and programmable frequency synthesizer  
A bidirectional direct sequence spread spectrum half-duplex RF modem. that can be applied to transmit and receive numerous types of analog and digital pulse modulation. The modem incorporates a...
7616965 Method and apparatus for calculating a device location  
A method and apparatus for calculating a location of a device is provided. A likelihood of the device being located at a particular location point or a particular location floor is determined...
7616677 Downlink power control with limit to dynamic range using detection of downlink transmit power  
An apparatus and method is provided for dynamic range power control of a wireless downlink communication signal, such that target signal quality adjustments are held temporarily when it is...
7613158 Method of quadrature spreading  
The invention provides a method of quadrature spreading suited for use in a software implementation of a code division multiple access communication (CDMA) system. The method includes providing...
7613226 Method and apparatus for transferring signals in a wireless communication system  
Data is transferred in a wireless communication system, such as a wireless spread spectrum communication system. A plurality of transmitting antennas are provided. Data is encoded to produce a...
7613225 System and method for secure communication of collected amphibious data  
A system for secure communication of collected data is provided. The system comprises a data dissemination subsystem, the data dissemination subsystem operable to store and disseminate collected...
7609751 Method and apparatus to initiate communications between an unknown node and an existing secure network  
A first node initiating communications with a second node already in a secure network sends a discovery burst having a preamble portion and a payload portion. The preamble portion is sent at a...
7609748 Method, system and apparatus for maximizing a jammer's time-on-target and power-on-target  
A system and method of electronic signal jamming employ a jamming signal transmitter, an electronic signal tuner and a controller. During a first time period, the transmitter transmits a jamming...
7609749 Method and apparatus for generating non-recursive variable rate orthogonal spreading codes  
A method for constructing and selecting non-recursive orthogonal variable spreading factor (OVSF) codes is provided. The method includes: defining a variable B=SFmax/SFmin, where SFmax is a...
7609750 Segment-wise channel equalization based data estimation  
Data is estimated of a plurality of received spread spectrum signals by a wireless communication apparatus. The plurality of received communications are received in a shared spectrum. The received...
7606567 Channel allocation for burst transmission to a diversity of satellites  
A method for allocating transmission channels to devices configured to communicate short data packets to a diversity of non geostationary satellites is disclosed hereby. The method suggests a...
7599665 Selection of radio resources in a wireless communication device  
The invention relates to a method for selecting radio resources for a communication session in a wireless communication terminal. In order to facilitate the selection of quality of service between...
7596166 Integrated circuit device including a spectrum spread clock generator, method for controlling the device, and ink-jet recording apparatus including the device  
An integrated circuit device is provided including a plurality of circuit blocks which operate based on a clock signal. The quartz oscillation circuit outputs a first clock signal. A spectrum...
7586977 Transmission power control method, mobile station, and radio network controller  
A transmission power control method for controlling transmission power of an enhanced dedicated physical data channel for transmitting uplink user data, includes: storing, at a mobile station, a...
7583745 Exploiting selection diversity in communications systems with non-orthonormal matrix and vector modulation  
The invention relates to methods for scheduling at least one out of K transmission channels k with respective Nt,k transmission interfaces and respective Nr,k reception interfaces for the...
7580400 Apparatus and method for generating preamble signal for cell identification in an orthogonal frequency division multiplexing system  
Disclosed are an apparatus and a method for generating a preamble signal for cell identification in an OFDM mobile communication system. The method includes the steps of generating a Walsh code...
7577180 Method and system for maintaining synchronization in low-power mode over a frequency hopping radio link  
Systems and methods for maintaining synchronization of a base unit and a portable unit in a low-power mode are provided. The base unit and the portable unit communicate with each other via...
7555028 Method and system for defining additional spread spectrum channels within a coverage area of an existing wireless network  
A method and system for defining additional spread spectrum channels within a coverage area already served by an existing wireless network. A first spread spectrum channel may be defined by a...