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US20130077469 |
Preambles in OFDMA System
The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs... |
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US20130077468 |
Preambles in OFDMA System
The present invention provides a preamble that is inserted into an OFDMA frame and has a common sequence for all the base stations participating in a transmission. The subscriber station performs... |
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US20130088950 |
METHOD AND DEVICE FOR SINR ESTIMATION
A method (200) for a transceiver in a mobile system for determining the SINR for signals from at least two User Equipments during a future time interval, comprising arranging the transceiver to... |
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US20110242964 |
DOWNLINK ACQUISITION
The subject matter disclosed herein provides methods and apparatus, including computer program products, for detecting a preamble to enable acquisition of a downlink. In one aspect, there is... |
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US20110116360 |
OFDM SYSTEM AND METHOD EMPLOYING OFDM SYMBOLS WITH KNOWN OR INFORMATION-CONTAINING PREFIXES
Systems and methods for transmitting and receiving OFDM symbols are provided which enable the otherwise wasted transmission time normally used as a prefix for each OFDM symbol to contain useful... |
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US20110007627 |
METHOD AND APPARATUS FOR GENERATING RANGING PREAMBLE CODE IN WIRELESS COMMUNICATION SYSTEM
A method and apparatus of generating a ranging preamble code in a wireless communication system is provided. A mobile station (MS) generates one of a plurality of ranging preamble codes, wherein... |
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US20110044161 |
RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION METHOD, AND PROGRAM
A radio communication system according to the present invention has a plurality of radio communication devices that transmit and receive subframes one by one. Each of the plurality of radio... |
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US20130039165 |
DISCRETE FOURIER CALCULATION DEVICE, RADIO COMMUNICATION DEVICE, AND DISCRETE FOURIER CALCULATION METHOD
A discrete Fourier calculation device includes a twiddle factor table storage unit that stores therein a twiddle factor table that associates twiddle factors with phases of the corresponding... |
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US20110069605 |
COAXIAL NETWORK COMMUNICATION NODE AND METHODS FOR COMMUNICATING MULTIMEDIA OVER A COAXIAL NETWORK WITH REDUCED-LENGTH CYCLIC PREFIXES
A coaxial network communication node receives multimedia content with one or more other nodes in a coaxial network. The node determines a delay-spread of a coaxial channel based on receipt of a... |
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US20090296842 |
SOFT OUTPUT M-ALGORITHM RECEIVER STRUCTURES WITH GENERALIZED SURVIVOR SELECTION CRITERIA FOR MIMO SYSTEMS
A method and apparatus is disclosed herein for a modified soft output M-algorithm. In one embodiment, the soft output M-algorithm is employed by a receiver in a wireless communication system to... |
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US20090257344 |
ALL OPTICAL OFDM WITH INTEGRATED COUPLER BASED IFFT/FFT AND PULSE INTERLEAVING
A method and apparatus for all optical orthogonal frequency division multiplexing (OFDM) employing Inverse Fast Fourier Transform/Fast Fourier Transform by integrated coupler interferometrically. |
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US20150029831 |
LTE-Advanced Transmit Diversity Decoders
Various embodiments of a transmit diversity decoding techniques are provided. In one aspect, a method receives a first input that includes signals transmitted by M transmit antennas on C channels... |
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US20090323513 |
WEIGHTED TONE RESERVATION FOR OFDM PAPR REDUCTION
A weighted tone reservation (WTR) method and system are disclosed, for PAPR reduction. The WTR method solves the peak re-growth problem with minimum overhead. By avoiding the drawbacks of... |
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US20050271088 |
Method of using guard tones in OFDM systems for increasing robustness
The present invention provides a method and system for increasing communication robustness between wireless communication devices by transmitting data on Orthogonal Frequency Division Multiplexing... |
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US20100313094 |
COMMUNICATION DEVICE
A communication device is provided with a partial Fourier transformation circuit that calculates a correction parameter for quadrature errors correction. The partial Fourier transformation circuit... |
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US20110103219 |
METHOD AND APPARATUS FOR GENERATING RANGING PREAMBLE CODE IN WIRELESS COMMUNICATION SYSTEM
A method and apparatus of generating a ranging preamble code in a wireless communication system comprises generating a Zadoff-Chu (ZC) sequence in which a cyclic shift is applied to each of a... |
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US20120314561 |
Method and apparatus for implementing preamble generation
The disclosure involves a method and an apparatus for implementing preamble generation. The method comprises: obtaining a first parameter value according to a root sequence number of a Zadoff-Chu... |
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US20100080113 |
TONE RESERVATION TECHNIQUES FOR REDUCING PEAK-TO-AVERAGE POWER RATIOS
Embodiments of the present disclosure describe closed loop scheduled peak-to-average power (PAPR) reduction systems and methods to facilitate desired PAPR reduction. Other embodiments describe... |
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US20090231993 |
Methods of uplink channelization in LTE
Methods of a slot-level remapping physical uplink control channels into two resource blocks respectively located at two slots of a subframe, are generally adapted to a 3GPP LTE physical uplink... |
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US20070147336 |
Preamble configuring method in the wireless lam system, and a method for a frame synchronization
A method of configuring a preamble of a downlink frame for synchronization in data frame transmission of a 60 GHz a wireless local area network system, the method comprising arranging a short... |
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US20150003226 |
DETECTION OF CABLE NETWORK INTERFERENCE ON WIRELESS NETWORK
Described are methods and devices for detecting cable network interference on a wireless network. In one aspect, disclosed is a method, performed by a processor of a cable interference detection... |
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US20090088176 |
Method for Reducing Inter-Cell Interference in Wireless OFDMA Networks
Protocols for OFDM/OFDMA/SC-FDMA based wireless networks provide adaptive inter-cell interference management without explicit spectrum or frequency planning. Base stations and mobile stations... |
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US20090245088 |
COMMUNICATION EQUIPMENT WHICH RECEIVES OFDM SIGNAL, OFDM-BASED WIRELESS COMMUNICATION SYSTEM AND METHOD FOR RECEIVING OFDM SIGNAL
When a receiving apparatus which employs a OFDM-based cellular wireless communication scheme detects as an excessive signal for each frame, the signal having signal intensity exceeding a reference... |
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US20070268811 |
Telecommunication system and method
An arrangement for use in a telecommunication system includes a binder of subscriber lines, a local transceiver circuit, and a far-end crosstalk cancellation circuit. Each of the subscriber lines... |
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US20080304404 |
ARCHITECTURE FOR OWA BASED TDD-OFDM SYSTEM
As no single wireless standard can provide both broadband high-speed and seamless mobility for commercial wireless communications in terms of technology, cost, spectrum and performance, a new... |
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US20100302930 |
Low Power Quality-Energy Scalable OFDMA Baseband Design
In an energy scalable OFDMA energy metric baseband design for an OFDM transmission process operable using a QoS-guaranteed adaptive resource allocation algorithm, the improvement of effecting... |
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US20070076589 |
Method and device for handling ranging signals in a wireless communications network
A method is described for detecting and/or estimating a ranging signal in a wireless communications network, wherein the ranging signal comprises a plurality of tiles. The method comprising the... |
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US20090181687 |
Sounding reference signal arrangement
A method, apparatus, and computer program embodied on a computer-readable medium to create an uplink message to be transmitted to a base station, the created uplink message comprises a sounding... |
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US20080310296 |
Systems and Methods for Transmit-Only Peak-to-Average Ratio Reduction in the Oversampled Regime Using Reserved Tones
Systems and methods for reducing the peak-to-average power ratio (PAR) at the transmitter can reduce the dynamic range required in various analog components. PAR can be reduced by applying a... |
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US20110310725 |
SOFT HANDOFF IN OFDMA SYSTEM
Soft handoff in an OFDMA system is disclosed. If the pilot signal strength for a base station exceeds the defined threshold, the base station is added to an active set list. Subcarriers in a... |
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US20090103428 |
SYSTEM FOR GENERATING SPACE FREQUENCY BLOCK CODE RELAY SIGNAL AND METHOD THEREOF
A method and system for generating a space frequency block code relay signal includes a signal detection unit which detects a received signal by receiving a first and second source signals... |
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US20120275291 |
WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD
By using a discrete Fourier transform equation that is used to transform N data values (N is an integer equal to or greater than one) to N transformation values, a wireless communication apparatus... |
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US20090185476 |
DURATION-SHORTENED OFDM SYMBOLS
A communications network comprises a base station (28) and a wireless terminal (30) which communicate a frame (F) of information over an air interface (32). The frame (F) is prepared or processed... |
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US20090040918 |
Random Access Preamble Detection for Long Term Evolution Wireless Networks
This invention is a method for preamble detection with estimation of UE timing advance (TA) and channel quality information (CQI) which uses a sliding window to detect the preamble and estimate... |
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US20110299382 |
COMMUNICATION DEVICES FOR GENERATING AND USING A MATRIX-MAPPED SEQUENCE
A communication device for generating a matrix-mapped sequence is described. The communication device includes sequence generation circuitry. The communication device also includes mapping... |
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US20070097856 |
UNITARY PRECODING BASED ON RANDOMIZED FFT MATRICES
Systems and methodologies are described that facilitate constructing unitary matrices that may be utilized in linear precoding for multiple-input multiple-output (MIMO) wireless communication... |
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US20110280117 |
BACKWARD-COMPATIBLE LONG TRAINING SEQUENCES FOR WIRELESS COMMUNICATION NETWORKS
A network device for generating an expanded long training sequence with a minimal peak-to-average ratio. The network device includes a signal generating circuit for generating the expanded long... |
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US20140286153 |
APPARATUS AND METHODS FOR UPDATE OF SYMBOL INFORMATION
Apparatus and methods for updating symbol information in a communication device with hardware such as a microcontroller are disclosed. The disclosed apparatus and methods employ waiting for the... |
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US20090213724 |
METHOD AND SYSTEM FOR I/Q BRANCH EQUALIZATION IN OFDM SYSTEMS
Aspects of a method and system for I/Q branch equalization in OFDM systems may include determining a transfer function mismatch between an in-phase processing branch, and/or a quadrature... |
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US20090274039 |
WIRELESS COMMUNICATION DEVICE ADOPTING OFDM MODULATION
A wireless communication device includes a converting circuit, a discrete Fourier transformer, a separating circuit, a correcting unit. The converting circuit converts an analog signal having an... |
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US20110299384 |
PILOT SIGNAL IN AN FDMA COMMUNICATION SYSTEM
Methods (500, 800) and corresponding systems (100, 200, 300, 400, 900) for generating a pilot symbol (330) include providing an M-point parallel transform sequence that is a discrete Fourier... |
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US20110299380 |
PILOT SIGNAL IN AN FDMA COMMUNICATION SYSTEM
Methods (500, 800) and corresponding systems (100, 200, 300, 400, 900) for generating a pilot symbol (330) include providing an M-point parallel transform sequence that is a discrete Fourier... |
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US20120314560 |
INTERFERENCE REJECTION METHOD BASED ON MULTIPLE SUB-BAND PROJECTIONS
This invention describes a cognitive radio signal processing where interference is mitigated using multiple frequency spatial projection to orthogonalize interference. The method is based on the... |
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US20090154336 |
CONTINUOUS PHASE MODULATION PROCESSING FOR WIRELESS NETWORKS
Various example embodiments are disclosed herein. According to an example embodiment, a method may include receiving a plurality of data symbols, generating a continuous phase modulated waveform... |
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US20080084818 |
BROADCAST AND MULTICAST SERVICES (BCMCS) FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM)-BASED MOBILE BROADBAND WIRELESS CELLULAR SYSTEMS
Methods are provided for transmitting BCMCS in mobile broadband wireless cellular systems under development. |
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US20100080308 |
VIRTUAL MULTICARRIER DESIGN FOR ORTHOGONAL FREQUENCY DIVISION ...
Embodiments of the present invention provide a virtual multicarrier design for orthogonal frequency division multiple access communications. Other embodiments may be described and claimed. |
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US20100034078 |
WIRELESS COMMUNICATIONS EQUIPMENTS WITH FUNCTION OF DETECTING RANDOM ACCESS SIGNAL, WIRELESS COMMUNICATIONS SYSTEMS WITH FUNCTION OF DETECTING RANDOM ACCESS SIGNAL AND METHOD OF RANDOM ACCESS SIGNAL DETECTION
In a method by which a base station detects a random access signal transmitted by a user equipment to send a transmission request to the base station in uplinks, the base station omits a MF used... |
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US20110058471 |
OFDEM SYSTEM AND NYQUIST PULSE SHAPING METHOD WITH HIGH SPECTRUM EFFICIENCY
A receiver system to receive an orthogonal frequency division multiplexing (OFDM) symbol of a certain spectrum efficiency. The receiver system includes a guard interval remover, a memory device,... |
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US20060227701 |
System for modeling digital pulses having specific FMOP properties
A system samples data of a digital pulse. The system includes a processor, an integrator, and a converter. The processor computes a discrete Fourier transform of frequency data of the digital... |
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US20090196166 |
RECEIVER AND FREQUENCY INFORMATION ESTIMATING METHOD
A receiver 100 has a Fourier transform section 105 Fourier-transforming symbols for propagation path estimation including subcarriers modulated by known signals different for two or more antennas... |