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7027495 |
Acquisition circuit for low chip rate option for mobile telecommunication system
A User Equipment (UE) has a circuit that performs the acquisition for the low chip rate option of the Universal Mobile Telecommunication System (UMTS) Time Division Duplex (TDD) standard as...
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7027817 |
Method for transmitting an information of a mobile telecommunication system
Method for transmitting an information representative of the number of spreading codes allocated to the mobile stations in communication with a base station of a mobile telecommunication system, ...
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7023906 |
Receiver and receiving method in spread spectrum communication system
An over-sampling circuit is provided at a front stage of a digital matched filter, and a received signal is over-sampled with it. Synchronous acquisition of the received spread spectrum signal is...
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7023905 |
Correlation and demodulation circuit for a receiver for signals modulated by a specific code
The correlation and demodulation circuit ( 6 ) in particular for a pseudo-random code radio-frequency signal receiver ( 1 ) includes a correlation stage ( 7 ) connected to a microprocessor ( 12 )...
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7023823 |
Wireless network with capacity measurement
The invention relates to a wireless network comprising a radio network controller ( 1 ) and a plurality of assigned terminals ( 2 to 9 ) for exchanging useful data and control data, which...
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7020183 |
Code division multiple access signal receiving apparatus
In a code division multiple access signal receiving apparatus for demodulating transmit data by subjecting a receive signal to despread processing using a code sequence identical with a...
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7009947 |
Integrity of pilot phase offset measurements for predicting pilot strength
A high integrity process is provided to apply pilot phase rates to call processing decisions. An estimate or measurement of the rate of change of a pilot's PN phase offset is used to assist in...
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6999499 |
Demodulation apparatus of a base station in a CDMA mobile communication system
A demodulation apparatus for a base station of a CDMA mobile communication system is provided, having an analog-to-digital converter device to convert an intermediate frequency signal into a...
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6999502 |
Method for receiving CDMA signals with synchronization resulting from delayed double multiplication and corresponding receiver
The present invention relates to a method for receiving CDMA signals with synchronization being obtained through double delayed multiplication, and an associated receiver. According to the...
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6996160 |
Channel gain estimation in a rake receiver using complex weight generation (CWG) algorithms
A channel estimation method which reduces the strain on resources of a Rake receiver using a complex weight gain (CWG) algorithm. In one embodiment, a non-adaptive algorithm is used to average...
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6987799 |
System and method for demodulating associated information channels in direct sequence spread spectrum communications
A Direct Sequence Spread Spectrum (DSSS) receiver system ( 100 ) combines and orders the soft symbols from associated information channels. The system permits a QPSK channel to be demodulated as a...
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6983165 |
Radio communication apparatus and transmission power control method
Desired signal power measured at a desired signal power measuring circuit 105 is averaged over a plurality of slots by an averaging circuit 106 to reduce a power error in desired signal power...
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6973119 |
Method and apparatus for recognizing a receiving path in a CDMA system
A method and system are provided for recognizing a path having low level signals, which is conventionally treated as useless, as a valid receiving path. Recognition is made from a plurality of...
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6973149 |
Arrangement for capturing data
An arrangement for capturing data from a data stream of a predetermined data transfer rate using a flip-flop, comprises a symmetrical multi-phase clock generator that is adapted to be locked to a...
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6968202 |
Method for operating a user equipment by prelimiting an output signal
A method for operating a user equipment employing a CDMA technique comprises combining a plurality of spread spectrum data signals into a combined signal having a fluctuating power level...
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6967992 |
Method and apparatus for receiving GPS/GLONASS signals
An electronic system for receiving spread spectrum signals, in particular GPS and/or GLONASS signals is described. In particular, the functional specification for the design of an advanced GPS...
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6967988 |
Filter for determining cross-correlation, receiver, and method of equalizing signals
A filter for determining the cross-correlation of optically transmitted signals is disclosed which comprises a ladder structure of amplifier cells 3 and multipliers 4 . Such a filter structure...
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6965630 |
Mode Controller for signal acquisition and tracking in an ultra wideband communication system
A system and method for controlling the mode of operation in a UWB receiver. In one variation, the system and method determines the mode of operation by reading a set number of samples of the...
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6965631 |
Low power passive correlators for multichannel global positioning system signal receiver
One embodiment of the present invention includes a circular shift register, K storage elements, and a code register. The circular shift register having N data samples circularly shifts a first data...
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6965632 |
Method and apparatus for using adaptive threshold with initial acquisition
A method and apparatus for initial acquisition using an adaptive threshold includes performing a sort operation of a plurality of full-length correlator outputs and updating the adaptive threshold....
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6965633 |
Pilot synchronization channel structure for CDMA mobile communication system
The invention discloses a pilot synchronization channel structure for mobile communication systems. The channel structure includes a pilot channel overlapping a synchronization channel (SCH),...
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6963602 |
Digital correction method and system
A method and system for providing a frequency correction for a spread spectrum communication receiver. In the method and system, a frequency offset is determined by processing successive samples of...
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6959035 |
Post-correlation interpolation for delay locked loops
A Code Division Multiple Access (CDMA) post-correlation processing system ( 12 ) for delay locked loop processing reduces the control data rate into a delay locked loop (DLL) processor and the...
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6952440 |
Signal detector employing a Doppler phase correction system
A spread spectrum detector employs a Doppler phase correction system that improves correlation of pseudo-noise (PN) codes to a received spread spectrum signal by combining phase shifts, in the time...
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6950455 |
Synchronization establishing method of mobile station in mobile communication system
A synchronization establishing method of a mobile station in a mobile communication system is proposed which can reduce the effect of noise or interference, and achieve higher accuracy than...
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6947511 |
Method and device for finding a reference pattern in a serial digital data stream
A method and device for finding a reference pattern in a serial stream of digital data draws up comparison tables for the front and rear bits of the reference pattern. Using the comparison table...
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6947476 |
Method for synchronizing frame by using pilot pattern in compressed mode
Method for synchronizing frames by using pilot patterns in a compressed mode. In a case a W-CDMA mobile communication system is operated in a compressed mode, the present invention permits to...
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6944210 |
Method for receiving or sending messages
A method for receiving or transmitting messages wherein the use of shortened spreading codes, especially in the paging channel, for the purpose of correlation in the reception of CDMA signals,...
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6941132 |
Transport of radio network-originated control information
In a radio access network (RAN) where information may be sent to a mobile radio unit using a shared radio channel shared by other mobile radio units, a first transport bearer is established between...
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6940837 |
Spread spectrum demodulator
A spread spectrum demodulator which is capable of correctly and simultaneously demodulating reception waves that were spread by using the same spreading signal and transmitted from a plurality of...
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6934319 |
Configurable multimode despreader for spread spectrum applications
A configurable multimode despreader for spread spectrum applications is disclosed herein. The despreader includes a plurality of data lines, at least one selective coupler coupled to the plurality...
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6930634 |
Shared memory architecture in GPS signal processing
A shared memory architecture for a GPS receiver, wherein a processing memory is shared among the different processing functions, such as the correlator signal processing, tracking processing, and...
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6928103 |
Rach receiving apparatus
The present invention provides an RACH receiving apparatus in which the components can be constructed in a small scale. The RACH receiving apparatus performs a demodulation processing so as to...
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6925133 |
Apparatus and method for M-ary demodulation in a digital communication system
A demodulator for demodulating a set of S possible orthogonal modulation codes received serially as binary data, wherein each of the orthogonal modulation codes comprises M binary bits representing...
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6922435 |
Method and apparatus for generating PN sequences at arbitrary phases
Techniques to generate a pseudo-random number (PN) sequence at a desired phase using “masking” to adjust the phase of the PN sequence in coarse increments (e.g., 64-PN chip increments) to...
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6917644 |
Spread spectrum receiver with multi-path correction
A spread spectrum receiver uses a comparison of the magnitude of the code correlation amplitudes at equal power at a one chip spacing to the magnitude at a central position there between to...
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6914931 |
Spread spectrum receiver kalman filter residual estimator method
A GPS receiver receives GPS spread spectrum communication signals subject to carrier demodulation and code phase autocorrelation using tightly coupled Kalman filter residual estimation based on...
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6912245 |
Apparatus for calculating decision parameters in an IMT-2000 system
Improved techniques for calculating decision parameters in an IMT-2000 system is disclosed. In an apparatus for calculating decision parameters, there is provided a correlation value calculation...
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6912227 |
Device and method for acquiring phase of spreading code in CDMA communication system
A code acquisition device securing reliable code acquisition and reducing a time required for a code acquisition procedure. In the device, a sampler samples an input signal, and a searcher...
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6909738 |
Method in a receiver and a receiver
The invention relates to a method for acquiring a receiver ( 1 ) into a code modulated spread spectrum signal received by the receiver ( 1 ). In the method at least one replica code (r) is used...
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6904107 |
Space-weighted communication path estimation
A method of estimating a communication path formed of a plurality of channels, the method necessitating an estimate of the impulse response C 1 , C 2 , . . . , C n of the channels, including the...
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6901104 |
Wirless network
A wireless network is disclosed including at least one base station and a plurality of assigned terminals for exchanging user data and control data. The base station is arranged for transmitting...
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6895039 |
Method and apparatus for collision resolution in a delay-critical radio telecommunications system
In a PRACH channel, colliding signals are resolved by use of a number of training-like symbols in the colliding data payloads. The signals are estimated by spatio temporal filters running a...
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6891884 |
Apparatus for detecting correlation, spectrum despread apparatus and receiver having the same, and method for detecting correlation
An apparatus is provided for detecting a correlation of samples with a spread code comprising: an L-chip accumulator which inputs the samples to generate and output an intermediate correlation...
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6891885 |
Correlation circuit for spread spectrum communication
There is disclosed a correlation circuit for spread spectrum communication, which can demodulate users having superposed demodulation phases and equaling or exceeding a sum of products calculation...
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6891816 |
Spread spectrum communication system using DECT protocol
A spread spectrum transmitter adapted for transmitting input data streams from a DECT (Digital European Cordless Telecommunication System) MAC (medium-access control) layer, where the data streams...
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6885693 |
Synchronization in digital data transmission systems
A channel estimation method for a digital telecommunication station is disclosed. A frequency correction burst is sought by scanning of the wanted channel. The frequency correction burst is used to...
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6882692 |
Fast transform system for an extended data rate WLAN system
In a direct sequence spread spectrum receiver an “as received” signal is decoded by correlation. Phase shift key, complementary code key modulated signals are correlated by transforming samples...
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6879913 |
Indoor GPS clock
An indoor GPS clock using GPS signals lower that −143 dBm for issuing disciplined frequency and time standard signals. The indoor GPS clock includes a correlation machine using long integration...
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6879623 |
Method and apparatus for timing recovery in a communication device
A receiving communication device synchronizes to a timing reference of a transmitting communication device based on a determined timing error. The receiving communication device determines the...
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