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| Number | Title | Issue Date |
| 7313391 | Modeling of RF point source reference for analysis of wireless signal propagation A data collection and evaluation method for determination of wireless signal propagation from an incomplete set of measured data and for modeling the system as a set of RF point sources located at the tower in each cell. RF propagation measurements are collected acc... | 12/25/2007 |
| 7313409 | Method and apparatus for transmit power control during beam switching A method and apparatus for transmit power control (TPC) while switching a beam among a plurality of beams in a wireless communication system. An antenna array generates a plurality of directional beams and preferably an omni-directional pattern and switches a beam a... | 12/25/2007 |
| 7313748 | FEC decoder and method A method is described for FEC decoding a signal which has become affected by transmission errors, the original signal being transmitted together with parity data. The method comprises: receiving (5) the original signal (DATA) and parity data (ECC DATA) with e... | 12/25/2007 |
| 7313165 | Data detection for codes with non-uniform spreading factors A plurality of communication signals is received. Each communication signal has an associated code. At least two of the communication signals has a different spreading factor. The associated codes have a scrambling code period. A total system response matrix has blo... | 12/25/2007 |
| 7313170 | Spread spectrum receiver A signal generation/noise extraction unit that includes an analog-to-digital converter, a switch, a filter, a subtracter, an oscillator, a multiplier, and a switch generates a down-sampled signal at a frequency at which aliasing occurs, from an input signal, and ext... | 12/25/2007 |
| 7313235 | Device and method of applying a parity to encrypt data for protection A device and method of applying a parity to encrypt data for protection is disclosed. A parity generator generates a parity bit in accordance with a data to be outputted. A first parity location generator generates an inserting position N for the parity bit in accor... | 12/25/2007 |
| 7313173 | Correlation detection method and apparatus, transmission diversity detection method and apparatus, each method and apparatus for detection within a small time unit One code is generated by combining (including addition) 2 or more codes, correlation detection method which detects the correlation by multiplying such a generated code by the reception data. In communication system based on W-CDMA method, first spreading code (a·C... | 12/25/2007 |
| 7313161 | Spread spectrum clock generator and method of generating spread spectrum clock A clock circuit for generating a spread spectrum clock signal with reduced amplitude electromagnetic interference (EMI) spectral components is provided where the clock circuit includes a delay line circuit, the delay line circuit providing a spread spectrum clock si... | 12/25/2007 |
| 7313114 | Selecting spreading code in spread spectrum system The invention relates to a base transceiver station in a CDMA mobile telephone system, including a mechanism for maintaining a code tree which determines spreading codes to be used in the system, a mechanisms for selecting a spreading code from the code tree for the... | 12/25/2007 |
| 7313162 | Apparatus and method for calculating and implementing a Fibonacci mask for a code generator An apparatus and method for calculating and implementing a Fibonacci mask for a code generator is disclosed herein. The first step receives a desired code offset from a reference code state in a Fibonacci field. Next, a field vector in a Galois field with the same c... | 12/25/2007 |
| 7313127 | Method and apparatus for synchronizing a radio telemetry system by way of transmitted-reference, delay-hopped ultra-wideband pilot signal A time-division-multiplexed radio communication system and method uses transmitted-reference, delay-hopped (TR/DH) ultra-wideband (UWB) broadcast signal to provide a pilot signal to all mobile devices in a coverage area from which time synchronization is derived. Us... | 12/25/2007 |
| 7309018 | Semiconductor integrated circuit device and noncontact IC card A semiconductor integrated circuit includes a demodulating circuit, a plurality of sampling circuits each capable of sampling output signals of the demodulating circuit, a plurality of detection circuits capable of detecting headers of output signals of the sampling... | 12/18/2007 |
| 7310529 | Packet data traffic control for cellular wireless networks Data traffic over a plurality of data communications links of a wireless data communications system is controlled by identifying a poorly performing wireless link, and interrupting data communications over the poorly performing link. The data throughput of remaining... | 12/18/2007 |
| 7310324 | Technique for reducing processing power in 3G systems The present invention provides an improved transmitter for processing data blocks including bits of data coming from multiple transport channels in a transmitter of a radio communication system supporting variable data-rate transmissions. This is accomplished by usi... | 12/18/2007 |
| 7310364 | Multirate, constant envelope, constant bandwidth, modulation, channelization and detection system based on orthogonal bipolar spreading vectors A modulation channelization and demodulation system based on orthogonal bipolar spreading vectors is provided that permits a variable information rate to be transmitted without inducing envelope fluctuations and permits multiple access without requiring the transmit... | 12/18/2007 |
| 7310504 | IF frequency response characterization employing overlapping frequency bands A method and system characterizes an IF response of a receiver under test, such that an effect on the characterization by errors associated with uncertainties in knowledge of an RF stimulus signal used to perform the characterization is reduced. The method includes ... | 12/18/2007 |
| 7310596 | Method and system for embedding and extracting data from encoded voice code When a voice encoding apparatus embeds any data in encoded voice code, the apparatus determines whether data embedding condition is satisfied using a first element code from among element codes constituting the encoded voice code, and a threshold value. If the data ... | 12/18/2007 |
| 7310502 | Radio communications apparatus and transmission power control method thereof Radio communications apparatus according to the invention comprises a DAC, a variable power amplification unit including at least two variable power amplifiers, and variable power amplification control unit for controlling the variable power amplifiers. The variable... | 12/18/2007 |
| 7310366 | Procedure for estimating amplification factors of a CDMA signal The invention concerns a procedure for estimating unknown amplification factors of a received CDMA signal, which encompasses a plurality of code channels, in which respectively an input signal from a symbol plane is split on a symbol plane through splitting with a s... | 12/18/2007 |
| 7310368 | Means for initiative synchronization and cell searching based on the CDMA system of multipath energy window The present invention discloses an apparatus for initial synchronization and cell search in a CDMA system based on multipath energy window. The apparatus perform initial synchronization and adjacent cell search by using multipath energy window based on the processin... | 12/18/2007 |
| 7310394 | LMMSE-based RAKE receiver with channel tap assignment Methods of recovering data in a received signal sent in a communications media are disclosed. Composite channel impulse responses are first estimated. Channel-tap locations are then assigned to suppress the interference noises by sequential search schemes or heurist... | 12/18/2007 |
| 7308020 | System and method of interference suppression To perform interference suppression for a received signal more precisely. Block dividing section divides a data part of a received slot into several blocks. Channel estimator calculates a channel estimate vector for each block and stores it into channel estimate sto... | 12/11/2007 |
| 7308016 | System and method for securing signals A system for inhibiting a potential interference source in a communications system. The system includes a first mechanism for incorporating a code within a signal. A second mechanism employs the code to decode the signal. A third mechanism for selectively prevents d... | 12/11/2007 |
| 7308015 | Mobile communication control method, cellular system, mobile station, base station, and base station control apparatus To decrease the number of base stations transmitting when a mobile station is connected to a plurality of base stations during handover and to let a base station having the best reception quality perform transmission so as to decrease interference in downlink and in... | 12/11/2007 |
| 7307943 | Mobile station, base station, communication system, and communication method A mobile station, and corresponding system and method, the mobile station including an IQ multiplexer configured to IQ multiplex transmission data for a data channel and control data for a control channel, and to generate a complex signal; and a transmitter configur... | 12/11/2007 |
| 7305250 | Apparatus and method for simultaneously performing a TV reception function and a calling function in a mobile phone A method and apparatus is provided to simultaneously perform a TV reception function and a calling function in a multimode mobile phone supporting two or more communication services. The apparatus comprises a first RF switch separating a received signal into N commu... | 12/04/2007 |
| 7305051 | Optimum training sequences for wireless systems In various embodiments, techniques are provided to determine channel characteristics of various communication systems such as OFDM systems or systems using a plurality of transmit antennas by using various sets of training symbols that produce zero cross-correlation... | 12/04/2007 |
| 7305060 | Spread range control apparatus A spread range control apparatus of the present invention controls a clock generator, which generates a spread spectrum clock based on setting of spread data, so as to regulate a spread range of the spread spectrum clock. The spread range control apparatus includes:... | 12/04/2007 |
| 7304522 | Spread spectrum clock generator A spread spectrum clock generator includes a plurality of delay cells, wherein each delay cell includes at least one delayer receiving an external clock signal and causing a predetermined propagation delay to the received clock signal, and a controller transmitting ... | 12/04/2007 |
| 7305020 | Method and system of reducing electromagnetic interference emissions A method and system is disclosed for spreading the power associated with digital signals being transmitted to lower electromagnetic interference (EMI) emissions. After being transmitted across a transmission line, a representation of the original digital signal is r... | 12/04/2007 |
| 7302233 | Multiuser detection for wireless communications systems in the presence of interference System and method for detecting transmissions from multiple users in a digital wireless communications system in the presence of interference. A preferred embodiment comprises derotating a received signal by a specified amount, determining channel estimates, which c... | 11/27/2007 |
| 7302276 | Method and system for determining uplink/downlink path-loss difference Methods and apparatus are described for estimating a path-loss difference between uplink and downlink communications at a first node communicating with a second node in a communication system. A quantity of access request preambles transmitted by the first node to t... | 11/27/2007 |
| 7302023 | Application of multipath combiner and equalizer in a multi-channel direct sequence spread spectrum communication system A receiver subsystem in a multi-channel direct sequence spread spectrum system consists of a signal register, a multipath detector, a multipath combiner, a decision-feedback equalizer, a multi-channel detector, and a multi-channel signal regenerator. First, the mult... | 11/27/2007 |
| 7302226 | Combined fixed satellite service and mobile platform satellite service communication system A communication system for a mobile platform satellite service (MPSS) system includes a receiver subsystem (RS) and a transmitter subsystem (TS). A satellite transponder is in communication with the RS and the TS of the mobile platform. A satellite service ground st... | 11/27/2007 |
| 7302017 | System and method for adaptive matched filter signal parameter measurement A robust and flexible system for signal parameter measurements in the field of signal processing dynamically uses signal parameters from previous signal detections and parametric priorities to adaptively control and process the signal in an efficient and reliable ma... | 11/27/2007 |
| 7302009 | Broadcast transmission with spatial spreading in a multi-antenna communication system An access point in a multi-antenna system broadcasts data using spatial spreading to randomize an “effective” channel observed by each user terminal for each block of data symbols broadcast by the access point. At the access point, data is coded, interleaved, an... | 11/27/2007 |
| 7301993 | Channel estimation in a spread spectrum receiver A method and apparatus for channel estimation in a spread spectrum receiver include processing that begins by despreading a received spread spectrum complex baseband sample utilizing a pseudorandom spreading sequence to produce a despread baseband symbol. The proces... | 11/27/2007 |
| 7301991 | Fading frequency decision device and method Fading frequency decision device and method are provided. An inner product value of pilot symbols which are time multiplexed in a control channel which is parallel multiplexed with a data channel, an inner product value of pilot symbols in a channel in which data sy... | 11/27/2007 |
| 7302020 | Encoded multi-access bus system and method A bus system includes multiple devices and a bus. The bus is connected to each device. Each device may include a type of input/output (I/O) device, such as a random access memory (RAM) or a microprocessor. The bus transfers data between devices. Data of each device ... | 11/27/2007 |
| 7301983 | Method for using codebook indexing to achieve high bit densities in a direct-sequence CDMA spread spectrum communication system A method for achieving high bit densities in a direct-sequence CDMA spread spectrum communication system. A table of orthogonal pseudo-noise codes is stored. This table is then partitioned into multiple codebook. Then, the codebook is assigned to a user. The pseudo-... | 11/27/2007 |
