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7623583 |
Apparatus and method for tracking a sampling clock of multi-carrier communication system
An apparatus and a method for tracking a sampling clock of a multi-carrier communication system are disclosed, the apparatus including a data removal module, a phase estimation module, and a...
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7623566 |
Method and apparatus for demodulating signals processed in a transmit diversity mode
Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically...
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7623467 |
Wireless channel estimation
A system and method are disclosed for wireless channel estimation. Estimating the characteristics of a wireless channel includes receiving a plurality of training symbols sent for the purpose of...
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7620099 |
WCDMA terminal baseband processing module having multi-path scanner module
A baseband processing module according to the present invention includes a multi-path scanner module. The multi-path scanner module is operable to receive timing and scrambling code information...
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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...
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7616682 |
Method and device for chronologically synchronizing a location network
Chronologically synchronizing a unique positing signal generated by a positioning-unit device at a known location with a reference positioning signal generated by a reference transmitter at a known...
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7616680 |
Method for processing data in a spread spectrum system
A method for processing data in a spread spectrum system, including decimating a data rate of received spread spectrum data by a decimation factor to a decimated rate; storing the received spread...
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7616679 |
Method and apparatus for searching cells utilizing down link preamble signal
An apparatus for searching for a cell in a mobile communication system, including: a preamble sequence storage unit storing preamble sequences each of which corresponds to one preamble index, and a...
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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 apparent...
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7613258 |
Apparatus and method for determining GPS tracking loop parameter based on SNR estimation
A method for estimating signal quality of a spread spectrum signal is provided. The method includes squaring a plurality of in-phase correlation results and a plurality of quadrature correlation...
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7613229 |
Method and apparatus for combined finger management and finger lock for a multipath signals in a wireless communication system
A method of managing fingers for multipath signals in a wireless communication device. In one embodiment, the present invention recites receiving multipath signals at a wireless communication...
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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 for...
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7609753 |
Link 16 radio receiver using antenna diversity
A Link 16 radio receiving system includes a first antenna, a second antenna, a combiner and a rake receiver. The combiner is coupled to the first antenna and the second antenna. The combiner...
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7609197 |
Method for measuring distance and position using spread spectrum signal, and an equipment using the method
By using the delay profile created by delay profile creating section 102 and the first threshold value 330 received from the first threshold value calculation 105, the first threshold value...
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7606320 |
Apparatus and method for space-frequency block coding/decoding in a communication system
An apparatus and method for SFBC coding and decoding in a communication system using a plurality of (N t ) Tx antennas are provided. In a transmitter using N t transmit antennas, a pre-coder...
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7606290 |
Architecture for signal acquisition with cyclic range search
An architecture for a spread-spectrum transmitter-receiver system in an advanced tactical data link that allows the receiver to readily acquire and synchronize to a desired LPD signal. Signal...
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7606288 |
Burst spread spectrum radio system and method for asset tracking and data telemetry
A system for wireless asset tracking is disclosed. The system includes a plurality of mobile devices. Each mobile device performs two spreading operations with two distinct PN codes, a first PN...
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7606137 |
Cancellation systems for multicarrier transceiver arrays
Frequency-dependent cancellation separates a plurality of interfering signals received by a plurality of receivers. Received wideband single-carrier signals or multicarrier signals are separated...
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7602866 |
Signal receiver devices and methods
A method/apparatus is provided that detects impairment in a received signal and employs the structure in the receiver that is designed for that purpose. Preferably, the method/apparatus detects the...
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7602864 |
Method and apparatus for predicting CCK subsymbols
A correlator comprises a plurality of phase rotators, a plurality of combining modules, a plurality of computation modules, and a selection module. The plurality of phase rotators selectively...
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7602835 |
Multi-rate spread spectrum composite code
A correlator despreads a P/N long code constructed from two or more constituent codes A, B, C having N, M and L elements respectively. In a third stage, L filter taps decorrelate elements of the...
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7602834 |
System and method for determining a fine frequency offset of a received signal
A system and method for determining a fine frequency offset of a composite code spread spectrum signal is disclosed. The method includes despreading at least one component of the composite spread...
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7599425 |
Multiple channel joint decoding at mobile handset
A system and method suppresses the interference caused by non-orthogonal signals on multiple channels of the same receiver by applying an inverse of the correlation among the non-orthogonal signals...
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7599422 |
Adjustable dual-band link
A communication system utilizing an adjustable link has at least a first data transmission circuit including at least a first communication link circuit. The first communication link circuit has a...
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7599421 |
Spread spectrum applications of universal frequency translation
Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified...
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7599344 |
Method and apparatus for reducing multi-user processing in wireless communication systems
A method and apparatus is disclosed for reducing multi-user processing at the receiver in wireless communication systems. Detected codes are grouped according to channel impulse response and a...
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7596171 |
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...
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7596170 |
Coherent detection without transmission preamble
A receiving system allows for the coherent detection of a spread-spectrum transmission at any point in time during the transmission, thereby avoiding the need to identify the start of the...
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7593704 |
Receiver assembly and method for multi-gigabit wireless systems
The present invention describes a receiver assembly for receiving an analog signal and converting the analog signal to a digital signal. The receiver assembly is, preferably, capable of receiving a...
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7593452 |
Despreading spread spectrum data
A method for de-spreading spread data includes receiving a data stream by multiple access communication where the received data stream is spread using a pseudo-noise (PN) code; multiplying a first...
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7593451 |
Apparatus and method for communicating packet data control channel in a mobile communication system
A base station transmission apparatus for transmitting MAC (Medium Access Control) ID (Identification) information indicating a terminal to receive transmission packet data and length information...
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7593449 |
Multicarrier sub-layer for direct sequence channel and multiple-access coding
Carrier interferometry (CI) methods may be used to provide transmission protocols having various desirable properties. Such properties may include interference rejection, reduced multipath fading,...
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7590165 |
Sub-system based window placement and size decision mechanism and method thereof
A method of path detection in a multi-path communications system that includes selecting an object for configuring a search window, setting at least one sub-window, wherein the sub-window is...
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7587224 |
Reconfigurable topology for receiver front ends
The method and apparatus of the present invention provide for a configurable radio front end topology that allows selectable operation in a single balanced mode and in a double balanced mode of...
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7586975 |
Code tracking apparatus and method under a multi-path environment in a DS-CDMA communication system
Disclosed is a code tracking apparatus and method under a multi-path environment in a DS-CDMA communication system. Through the steps of calculating fast path energy on a first path signal by...
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7586884 |
Joint packet detection in wireless communication system with one or more receiver
A packet detector joint detects 802.11a packets, 802.11b packets and interference that is within a monitored frequency range but is not formatted as 802.11a packets or 802.11b packets. The packet...
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7583740 |
Apparatus and method for tracking sampling clock in multi-carrier communication system
An apparatus and method for tracking a sampling clock are disclosed. The apparatus includes a compensating circuit compensating phases of a first and a second received symbols according to a...
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7583739 |
Channel estimation device, channel estimation method, and wireless receiver
A channel estimation device is provided to achieve high-precision channel estimation in a MIMO or multicarrier wireless receiver. This channel estimation device is used in the wireless receiver...
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7583720 |
Wireless communication method and apparatus for assigning multi-paths to rake receiver fingers
A wireless communication method and system for assigning multi-paths to Rake receiver fingers. A Rake finger assignment database is established in which multi-path signals are categorized into a...
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7583639 |
System and method for determining data rate
Described herein are systems and methods for determining data rate in a direct sequence spread spectrum system. The systems may include circuits or processors for receiving a signal that was...
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7580475 |
Base station having a set of phased array antennas
A spread spectrum base station for receiving a plurality of spread spectrum signals and a plurality of phased spread spectrum signals includes an antenna and a plurality of delay devices connected...
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7580464 |
Method for detecting UWB pulse sequences and analog detection means suitable for this purpose
The present invention relates to a method for transmitting data in the form of at least one sequence of Np pulses over Np time windows Tf, each pulse being enclosed within a time chip Tc whose...
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7580451 |
Decoding of Walsh codes
Methods, systems, devices, and computer program products for decoding of Walsh codewords are disclosed.
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7580444 |
Frequency hopping communication system
The invention provides an adaptive frequency hopping spread-spectrum (FHSS) transmission system and method, which efficiently utilizes available transmission bandwidth, whilst providing robustness...
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7580390 |
Reducing handover frequency error
Frequency estimation information obtained when a wireless communication device (WCD) is in one wireless communication system, such as frequency error or offset information, may be translated to a...
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7577185 |
Finger for symbol-rate weighting using in smart antenna system, and its application for demodulation apparatus and method
The present invention relates to a finger using symbol-rate weighting in Smart Antenna System, and an apparatus and method for Demodulating signals using such a finger. The present invention is...
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7577184 |
Memory-based device and method of channel estimation in a digital communication receiver
A spread spectrum digital communication receiver, of the type comprising an input memory buffer ( 16 ) for storing samples of an input signal (y(k)) and a code generator circuit ( 30 ) for...
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7570748 |
Control and monitoring telecommunication system and method of setting a modulation method
Using a network in which one master station modem 105 and multiple slave station modem 106, 107, 108 are physically connected by rudder connection or bus connection with a telecommunication...
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7570626 |
Communication method, transmitting device using the same, and receiving device using the same
A transmission method for transmitting an orthogonal frequency division multiplexing signal the method includes composing, on a per unit time basis, a plurality of carrier groups each composed of...
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7570576 |
Detection and mitigation of temporary (bursts) impairments in channels using SCDMA
Systems and methods are disclosed for detecting and mitigating temporary high-level impairments, in a communications channel, and subsequently, mitigating the deleterious effects of the dynamic...
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