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7903717 |
Receiver, receiving method, program and information recording medium
When a receiver (200) receives a signal transmitted from a transmitter, an A/D converter (204) converts the signal into a digital signal having two or more levels by A/D conversion. A zero-level...
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7903723 |
Selecting delay values for a rake receiver
Multipath components of transmitted data symbols are received with individual delays and processed by a RAKE unit having a number of fingers. A delay profile is calculated, and delay values for...
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7903613 |
Code division multiple access (CDMA) communication system
A subscriber unit for use in a multiple access spread-spectrum communication system includes a spread spectrum radio interface, responsive to a rate function signal from a base station, and first...
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7904039 |
Multi-user adaptive array receiver and method
An array receiver which reduces complexity and cost by exploiting multiuser information in signals received from a plurality of transmitting users preprocesses (40) samples of antenna signals (x1,...
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7899109 |
GPS m-code receiver tracking system
An m-code GPS receiver receives m-code GPS communication signals having a multimodal autocorrelation, using an m-code mode identifier unambiguously determining a mode value of one of the m-code...
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7894507 |
Method and system for HSDPA maximum ratio combination (MRC) and equalization switching
Aspects of a method and system for a single antenna receiver system for HSDPA are provided. Aspects of a system for processing RF signals, the method may comprise a cluster path processor that...
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7894774 |
Communication unit and method for interference mitigation
A communication unit comprises a receiver for receiving a composite communication signal that comprises a desired signal and at least one asynchronously received interfering signal. The receiver...
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7894838 |
Dynamic EMI (electromagnetic interference) management
In one embodiment, a method is provided. The method may include determining if electromagnetic interference (EMI) is emitted by a device in one or more regions of an electromagnetic spectrum...
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7894556 |
Method and apparatus for excision of narrowband interference signals in navigation or communication bands
A method for suppressing narrowband interference signals is provided. The method comprises inputting a digitized signal to a fast Fourier transform (FFT) to produce a plurality of contiguous...
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7890061 |
Selective 40 MHz operation in 2.4 GHz band
Methods and apparatuses enable selective operation in an extended bandwidth channel of a wireless communication band. For example, a client station can be selectively authorized to operate on a 40...
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7889781 |
Maximum energy delay locked loop for cluster path processing in a wireless device
A system for processing radio frequency (RF) signals includes a searcher and a Cluster Path Processor (CPP). The searcher detects a maximum signal energy level and position of at least one of a...
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7889798 |
PAR reduction for EDGE clipper
A method of reducing the peak-to-mean ratio of a multi-carrier signal includes the steps of: generating a residual signal from the multicarrier signal, the residual signal representing the...
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7890050 |
Methods of reducing interference including determination of feeder link signal error and related systems
Methods of reducing interference in a satellite communications system may include receiving a plurality of feeder link signals and time aligning the plurality of feeder link signals to provide time...
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7885314 |
Cancellation system and method for a wireless positioning system
A cancellation system that delays received Global Positioning System (“GPS”) signals and cancels less than all of the received GPS signals from the delayed version of the received GPS signals. A d...
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7885364 |
Wireless communication system, receiver, demodulation method used for the system and receiver, and program thereof
In a wireless communication system having a receiver which receives, through plural reception antennae, signals transmitted from plural transmission antennae, bit likelihood can be surely...
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7885318 |
Method, device, system and software product for soft value scaling with receivers in an unsynchronized network
A method, mobile device, network device, system, and software are devised for soft value scaling with a single antenna interference cancellation (SAIC) receiver, or with an interference rejection...
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7881412 |
Quasi-linear interference cancellation for wireless communication
Techniques for performing interference cancellation in a wireless (e.g., CDMA) communication system are described. For a single-sector interference canceller, received samples are processed (e.g.,...
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7876810 |
Soft weighted interference cancellation for CDMA systems
Interference is cancelled from a baseband signal by synthesizing interference from estimated symbols in interfering subchannels. The estimated symbols are hard-coded, soft weighted, or zeroed,...
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7876863 |
Method and system for improving timing position estimation in wireless communications networks
A method for determining timing positions in a wireless communications system comprises creating a time-domain timing detection window from a preamble of a receiving signal, generating a first...
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7873021 |
CDMA transceiver techniques for wireless communications
The present invention is related to a method for multi-user wireless transmission of data signals in a communication system having at least one base station and at least one terminal where for a...
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7873098 |
Robust multicode detector for HSDPA
Detecting a symbol of interest comprises despreading a received signal to obtain despread values corresponding to the symbol of interest and to one or more interfering symbols, combining the...
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7869487 |
Quadrature multi-frequency ranging (QMFR) applied to GPS multipath mitigation
A quadrature multi-frequency ranging system applied to DSSS multipath mitigation problems is described. The QMFR techniques include taking the time-of-arrival measurements on the received signal at...
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7869528 |
Multi-carrier transceiver assembly
An assembly and method for processing of multi-carrier signals is provided. A plurality of carrier signals are combined into a combined multi-carrier signal represented in a first domain. The...
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7869485 |
Method and apparatus for detecting lock status of a GPS signal
An apparatus for detecting lock status of a spread spectrum signal, having a first accumulator, a first calculation unit, a second calculation unit, a second accumulator, a multiplier and a...
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7869486 |
Tracking apparatus and method for a mobile communication system
A tracking apparatus and method are provided which can reduce the effects of multipath interference which occurs when a receiving end of a mobile communication system tracks a received signal. The...
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7868819 |
Arrangements for satellite-based navigation and methods therefor
Various systems, methods and devices are implemented for processing received signals. Consistent with one such embodiment, a method is implemented for use in a signal-communication receiver having...
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7864833 |
Method for measuring interference power in time-slot CDMA system
The present invention relates to a method for measuring interference power in a time slot CDMA system, The method includes: performing channel estimation for received signals with channel...
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7864898 |
Systems and methods for signal acquistion in navigational satellite signal receivers
The present invention provides an elevation based adaptive scheme for setting power threshold in the acquisition of navigational satellite signals. In an embodiment, the elevation based adaptive...
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7865201 |
HARQ data reception in multiradio device
A HARQ data reception scheme for a multiradio communication device is disclosed. The communication device operates multiple radio connections and monitors interference level caused to a target...
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7860064 |
Radio communication device and arrival direction estimation method
A receiver having an array antenna estimates arrival directions of multiple paths that arrive with an angular spread. Consequently, arrival direction estimation accuracy can be ensured without...
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7860132 |
Comma free codes for fast cell search using tertiary synchronization channel
A method of processing data comprises the receiving a frame of data having a predetermined number of time slots (502,504,506). Each time slot comprises a respective plurality of data symbols (520)....
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7860199 |
Method and system for single antenna receiver system for HSDPA
Aspects of a method and system for a single antenna receiver system for HSDPA are provided. Aspects of a method for processing RF signals, the method may comprise computing channel estimates based...
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7860153 |
Mobile terminal, reception decision method in a mobile terminal and program
A method, and a mobile terminal incorporating the same, of carrying out a reception decision uses a signal received from a base station in the mobile terminal. The mobile terminal includes a...
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7852907 |
Performing a correlation in reception of a spread spectrum signal
A correlator (30) for performing a correlation with a received spread spectrum signal, comprising at least an input (30.1) for inputting samples of a received signal; at least one reference code...
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7852964 |
Antijam filter system and method for high fidelity high data rate wireless communication
An antijam filter and method for filtering interference signals from signals received from the desired user in spatially multiplexed wireless communication systems. The antijam filter estimates the...
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7848387 |
Receiver parametric covariance estimation for transmit diversity
A parametric form of G-Rake and chip equalization for closed-loop transmit diversity is provided, that accounts for impairment correlation between transmit antennas. In a closed-loop transmit...
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7848392 |
Rake receiver and de-spreading method thereof
The invention relates to a rake receiver and a method for de-spreading thereof. A plurality of noise branches is adopted for producing a plurality of noise components in the rake receiver. Next, a...
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7848389 |
Method and apparatus for scaling parameter estimation in parametric generalized rake receivers
A wireless communication receiver, such as the receiver included in a wireless communication transceiver implemented in a base station or in a mobile station of a wireless communication network,...
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7848469 |
Receiver
A receiver for a telecommunication system, including a radio frequency unit connected to at least one antenna and configured to receive using a multitude of channels, and an estimator configured to...
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7848390 |
Reduced lattice demodulation method and apparatus
RAKE-based receivers utilize lattice reduction for improving symbol estimation accuracy. Channel response estimates and received signal streams are transformed from a constellation lattice basis to...
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7848391 |
Interference cancellation in a spread spectrum receiver
A method of cancelling interference induced by a coherent interference source in a spread spectrum receiver comprising the steps of: quantifying (44; 94) first interference values induced by the...
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7839918 |
Method and device for estimating a frequency in the acquisition of a spread-spectrum code signal
In a method for estimating a frequency deviation between a received spread-spectrum code signal and a local frequency signal, the received spread-spectrum code signal is despread using a local...
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7839314 |
Satellite radio navigation receiver
In a satellite radio navigation receiver receiving a transmitted radio navigation signal, a method of removing I/Q-mismatches in the received signal, comprising: resolving the received signal into...
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7839808 |
Apparatus and method for eliminating noise contained within usable frequency band of a mobile communication terminal
Disclosed are an apparatus and method for removing noise contained within a usable frequency band of a mobile communication terminal. The apparatus includes a multiplier for multiplying a main...
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7839917 |
Receiver of a CDMA system with a path alignment circuit
A receiver of a CDMA system, receiving a signal transmitted through a multi-path channel, with a path alignment circuit is disclosed. The path alignment circuit has a pack-based memory device...
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7835424 |
Path selection method and device
A method and to a device for selecting paths of a multipath channel. The method selects a path if an estimate of the relative contribution of the current path to the output signal-to-noise ratio of...
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7830952 |
Reduced complexity interference suppression for wireless communications
The computational complexity required for interference suppression in the reception of wireless communications from multiple users is reduced by sharing information among the users. In some...
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7826516 |
Iterative interference canceller for wireless multiple-access systems with multiple receive antennas
This invention teaches to the details of an interference canceling receiver for canceling intra-cell and inter-cell interference in coded, multiple-access, spread spectrum transmissions that...
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7826577 |
Method for frequency acquisition of a mobile communications device
A method is provided for frequency acquisition, particularly for initial frequency acquisition, pursuant to a known synchronization sequence for synchronizing a mobile communications device having...
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7826864 |
Apparatus and method for power measurement summation in mobile telecommunications system user equipment
Apparatus and a method for deriving a power measurement summation for use in universal mobile telecommunications system user equipment are disclosed. Conversion from a logarithm scale to a linear...
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