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Class 370/203 - GENERALIZED ORTHOGONAL OR SPECIAL MATHEMATICAL TECHNIQUES


Subclass of Class 370 - Multiplex communications
Definition: Subject matter wherein (a) a multiplexed channel is uniquely
No. of patents: 865
Last issue date: 05/21/2013


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NumberTitleIssue Date
8446811Constellation re-arrangement and bit grouping
Methods and systems for subpacket generation using a convolutional turbo code in hybrid automatic repeat request re-transmissions that includes separating a codeword into subblocks of bits, interleaving the subblocks, and performing a permutation to group the bit st...
05/21/2013
8446812Method and apparatus for transmitting signals, and method and apparatus for receiving the signals
A storage unit stores a preamble signal defined in a legacy system and a preamble signal defined in a MIMO system. A monitoring unit in a transmitting apparatus monitors the existence of any communication apparatus which is not compatible with the MIMO system but ac...
05/21/2013
8446813Method, apparatus and computer program for solving control bits of butterfly networks
Control bits for switches of a butterfly network are directly solved iteratively for each successive functional column of switches to route data values in parallel according to a multiple access scheme through the butterfly network to memory spaces. A memory space a...
05/21/2013
8427934Single carrier frequency division multiple access technique
A technique for generating a single carrier frequency division multiple access (SC-FDMA) signal is described, in which from a set of M input symbols a set of N output symbols (M
04/23/2013
8422354Channel estimation method and apparatus using data channel
A channel estimation method and apparatus that use a data channel are provided for improving channel estimation accuracy in a wireless communication system. The channel estimation apparatus includes a channel value extraction unit that extracts a first estimation va...
04/16/2013
8400904Hierarchical-cell communication system using asymmetric feedback scheme based on class of access network
A small cell communication system may reduce interference occurring in a macro terminal through beamforming, even when using the same frequency resources as used by a macro communication system. For example, the small cell communication system may use a larger amoun...
03/19/2013
8400905Generation of MBSFN-DOB synchronization codes
Physical downlink channels PPHY1, PHY2 are summed in a summation unit 10. The output of summation unit 10 is forwarded to another summation unit 12, where it is combined with the primary and secondary synchronization channels P-SCH...
03/19/2013
8391127Method and apparatus for transmitting uplink control signal in relay station
A method of transmitting an uplink (UL) control signal of a relay station is provided. The method includes: configuring a UL relay zone for transmitting a signal by the relay station to a base station in a frame; configuring a resource unit including a plurality of ...
03/05/2013
8391128Mobile communication system, receiver and method
A transmitter in a mobile communication system code-multiplexes transmission symbols together with spreading codes, performs inverse Fourier transform and transmits the result from multiple transmit antennas. A receiver in the mobile communication system performs Fo...
03/05/2013
8379506Multi-band OFDM communications system
System and method for providing multiple access in a multi-band, orthogonal frequency division multiplexed (multi-band-OFDM) communications system. A preferred embodiment comprises determining a transmission bandwidth to support a performance requirement and configu...
02/19/2013
8379507Allocation and logical to physical mapping of scheduling request indicator channel in wireless networks
A method for allocating resources for a scheduling request indicator (SRI) is disclosed. An SRI cycle period for use by user equipment (UE) within a cell is transmitted from a NodeB in a cell to UE within the cell. The NodeB transmits a specific SRI subframe offset ...
02/19/2013
8351320Method and apparatus for transmitting pilot in wireless communication system
A method and apparatus for transmitting a pilot in a wireless communication system is provided. A pilot generating unit generates the pilot. A transmission circuitry transmits the pilot and a radio signal. A a processor assigns a first index and a second index to ea...
01/08/2013
8351319Information on reference signal structure for neighboring cell measurements
The present invention relates to cellular radio communication and in particular to providing information on neighbor cells to enable terminals to perform neighbor cell measurements. In the prior art the terminal attempts to make neighbor cell measurements in a refer...
01/08/2013
8339930Pilot transmission and channel estimation with pilot weighting
Techniques to perform channel estimation with pilot weighting are described. A receiver receives at least one transmission symbol for a pilot transmitted by a transmitter. Each transmission symbol may be generated with a single-carrier multiplexing scheme (e.g., IFD...
12/25/2012
8339931Method and apparatus for transmitting control information in wireless communication system
A method and apparatus of transmitting control information in a wireless communication system is provided. A sequence corresponding to control information from a sequence set is determined. A reference modulation symbol set corresponding to a mini unit by modulating...
12/25/2012
8325588Iterative reception method and iterative receiver
An iterative reception method and iterative receiver in a mobile communication system are provided. In order to remove inter-cell interference of a signal that is iteratively received in a multi-cell environment, a soft determination value of different cells excludi...
12/04/2012
8315148Method, apparatus, and computer product for generating an SC-FDMA signal
A technique for generating a Single-Carrier Frequency Division Multiple Access (SC-FDMA) signal based on a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence is disclosed. A method embodiment of this technique comprises generating a frequency domain represent...
11/20/2012
8315149Method and apparatus for resource mapping and code division multiplexing
The present disclosure discloses a method and an apparatus for resource mapping and code division multiplexing. In the present disclosure, each cell selects a mapping scheme among at least two mapping schemes to implement resource mapping, which effectively reduces ...
11/20/2012
8310915Method of transmitting OFDM signal and transmitter and receiver thereof
An OFDM transmitter includes, an allocation unit configured to allocate a first pilot signal and a first data signal respectively to at least one first pilot subcarrier and first data subcarriers within a subcarrier group that is identical among transmitters, and to...
11/13/2012
8300520Method and apparatus employed in a user equipment for interference signal code power and noise variance estimation
A method and apparatus for interference signal code power noise variance estimation employing a reduced number of samples is disclosed. A recursive technique may be employed wherein the noise variance is estimated from ignored coefficients of the estimated channel o...
10/30/2012
8295152Method for signal transmission in wireless systems
Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly use time and frequency resources for efficient code hopping. The method includes allocating the same frequency-axis sequence and different time-axi...
10/23/2012
8289834OFDM signal receiving system
A signal receiving unit receives the OFDM signal and to convert the OFDM signal into a baseband OFDM signal. A time wave operation unit performs a predetermined calculation on a time wave signal that is an output of the signal receiving unit. A Fourier transform uni...
10/16/2012
8274878Frame and training pattern structure for multi-carrier systems
A transmitting apparatus for transmitting signals in a multi carrier system on the basis of a frame structure, each frame comprising at least two preamble patterns adjacent to each other in the frequency direction and at least two data patterns, said transmitting ap...
09/25/2012
8264945Method for signal mapping and signal transmission with subcarrier shift schemes
A signal mapping method and a signal transmission method applying a subcarrier shift method are described. A signal mapping method using shifted subcarriers includes shifting positions of data subcarriers by as much as a frequency band corresponding to half of spaci...
09/11/2012
8259559Method and apparatus for transmitting and receiving data in an orthogonal frequency multiplexing system
A method and apparatus for transmitting and receiving data in an Orthogonal Frequency Division Multiplexing (OFDM) system are provided, in which a Base Station (BS) generates a signal of a broadcast channel, determines whether the broadcast channel signal includes R...
09/04/2012
8254243Method and application for generating interleaver or de-interleaver
A method and application for generating an interleaver or a de-interleaver are described. The method for generating interleaver includes: setting interleaving information of a base interleaver and/or de-interleaving information of a base de-interleaver, and respecti...
08/28/2012
8254241Adaptive communications methods for multiple user packet radio wireless networks
An exemplary wireless communication network that includes a base that communicates with remote units located in a cell of the network. A base concatenates information symbols with a preamble corresponding to a destination remote unit. One or more remote units commun...
08/28/2012
8254242System and method for initial ranging in wireless communication systems
A system and method for initial ranging in wireless communication systems is provided. A plurality of orthogonal frequency division multiplexing (OFDM) blocks are received by an OFDMA base station transceiver from a plurality of remote user devices in wireless commu...
08/28/2012
8243579OFDM receiving circuit having multiple demodulation paths using oversampling analog-to-digital converter
Embodiments according to the application relates to an OFDM (orthogonal frequency division multiplexing) receiving circuit and methods thereof configured to have a plurality of demodulation paths for an oversampling ADC, which can increase or improve an overall perf...
08/14/2012
8238225Method and system of managing control information
The present disclosure relates to the management of control information in a multi-user multi-input multi-output system with a base unit and two or more user units, where respective user unit sends an index representing a vector from a user codebook belonging to the...
08/07/2012
8223622Methods and systems for mobile WiMAX three-way downlink concurrent processing and three-way handover
Methods and apparatus for establishing multiple connections between a wireless device and multiple base stations and transferring data using these connections via different segments of an orthogonal frequency division multiple access (OFDMA) frame are provided. The ...
07/17/2012
8218420Non-cyclic evolving-type user resource structure for OFDMA based system with null guard tones
A non-cyclic evolving-type user resource structure applicable for use in the uplink and the downlink of an OFDMA system with large null guard tones (e.g., a 3GPP LTE system) is provided. In one example, the user resource structure combines the benefits of localized ...
07/10/2012
8208362Acknowledgement channel design for wireless networks
Various example embodiments are disclosed. According to an example embodiment, a technique may include transmitting a message to allocate resources to a mobile station in a wireless network for an uplink acknowledgement channel, the acknowledgement channel including...
06/26/2012
8203928System and method for selecting a number of spatial streams to be used for transmission based on probing of channels
Systems and methods are provided for determining a number of spatial channels to use to transmit a data packet from a source node to a destination node. This determination can be made based on a Probability of Channel non-Correlation (PCC) function that is generated...
06/19/2012
8203929Frame and data pattern structure for multi-carrier systems
The present invention relates to a transmitting apparatus (82) for transmitting signals in a multi carrier system on the basis of a frame structure, each frame comprising at least one signalling pattern and one or more data patterns, said transmitting apparat...
06/19/2012
8194529Frame and data pattern structure for multi-carrier systems
The present invention relates to a transmitting apparatus (54) for transmitting signals in a multi carrier system on the basis of a frame structure, each frame comprising at least one signalling pattern and one or more data patterns, said transmitting apparat...
06/05/2012
8194526Method for data communication via a voice channel of a wireless communication network
A system and method for data communication over a cellular communications network that allows the transmission of digital data over a voice channel of the communications network. Digital data is encoded into DBPSK data using differential binary phase shift keying en...
06/05/2012
8194528Packet based data cell delineation
A method of delineation of a packet-based data stream in order to identify a boundary between neighbouring packets in the data stream, wherein the data stream comprises a predetermined number of bits (N); the method comprising the steps of: processing the data strea...
06/05/2012
8194527Interleaving with iterative calculation of interleaving addresses
A method and a device (4) for block interleaving of size K with N iterations of index j, N being greater than or equal to 1, of input digital data items indexed by a variable k={0, . . . , K−1}. The interleaving method uses a turbo structure that has two in...
06/05/2012
8189453Method of OFDM communication using superposition coding
Improvements are provided in an OFDM network that uses superposition coding. A broadcast signal and e.g. a unicast signal are each subjected to OFDM modulation including processing by an IDFT, combined, and transmitted using non-orthogonal transmission resources. In...
05/29/2012
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