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7103089 Multibit spread spectrum signaling  
A method of transmitting and receiving a spread spectrum signal, wherein a product of a lower bit rate signal and a second PN-code equals the bit rate of a higher bit rate signal, and wherein a...
7103085 Wireless communications system with secondary synchronization code based on values in primary synchronization code  
A wireless communication system. The system comprises transmitter circuitry (BST 1 ), the transmitter circuitry comprising encoder circuitry ( 50 ) for transmitting a plurality of frames (FR). Each...
7103088 Efficient spreader for spread spectrum communication systems  
A spreading system and method for CDMA applications that requires fewer integer multiplications. User data is spread using real or complex integer based spreading codes of length SF to SF max ...
7103095 Spread spectrum code correlator  
Spread spectrum receiver with correlating coprocessor having common datapath for received signal correlations and code cross-correlations for efficient interference cancellation methods.
7099371 Method for generating and allocating code pairs of orthogonal spreading codes  
The present invention relates to an orthogonal spreading code in a code division multiple access (CDMA) mobile communication system, and more particularly, to a method for generating and allocating...
7095813 System and method for the detection and compensation of radio signal time of arrival errors  
A system and method to reduce-the effects of TOA errors. A mobile unit, generates a correlation pulse when a signal transmitted from a base station is detected. The transmitted signal may be...
7092469 Synchronization signal detector and method of detection of synchronization signal  
The invention is a method and demodulator which detects periodic synchronization signals. The method of the invention includes multiplexing orthogonal signals in a wireless transmission into a...
7092452 Co-channel interference receiver  
A digital receiver automatically detects and non-coherently demodulates a multiplicity of interfering digitally modulated signals transmitted simultaneously at approximately the same carrier...
7092456 Process for synchronization  
A process for synchronization of an input signal (S) involves demodulating ( 5 a ) the input signal (S) according to a particular demodulation method (AM) using a particular signal parameter for...
7092429 Multi-pass frequency hop-acquisition correlator  
A multi-pass frequency hop timing acquisition correlator that produces a more accurate time estimate from the fast acquisition frequency hop signal is disclosed. The time estimate produced by the...
7088956 Path search circuit, radio receiver and radio transmitter, utilizing a directional beam  
A path search circuit according to the present invention has an orthogonal multi-beam forming section 4 for directional reception with a plurality of orthogonal multi-beams orthogonal one to...
7085240 Directed maximum ratio combining and scheduling of high rate transmission for data networks  
Disclosed are systems and methods which proactively determine particular access terminals which are compatible for simultaneous communication at a high data rate and preferred embodiments provide...
7079603 Method for correlating chronologically discrete signal segments  
The method determines the position of a predetermined known signal segment in a transmitted signal received in a receiver by means of a correlation between the received signal and a representation...
7079604 Ultrawide bandwidth system and method for fast synchronization using multiple detection arms  
A system and method for fast synchronization of an incoming signal with a UWB receiver rapidly. The present invention synchronizes with a UWB receiver with an incoming signal. The present invention...
7075967 Wireless communication system using block filtering and fast equalization-demodulation and method of operation  
There is disclosed a transceiver for use in a base station of a fixed wireless network that communicates with a plurality of subscriber transceivers via time division duplex (TDD) channels. The...
7075974 Multi-path detection circuit and method for a CDMA receiver  
In a multi-path detection circuit for use in a CDMA communication system, a first peak is detected by searching a maximum value over a whole of data blocks composed of delay profile data. A second...
7076001 System and method for an in-service decision-directed signal to noise ratio estimator  
A signal to noise ratio estimator and method for a received signal which includes a communication component and a noise component is disclosed. One embodiment is an in-service, blind,...
7072618 Adaptive threshold selection system and method for detection of a signal in the presence of interference  
A system and method for providing adaptive threshold selection for detecting a signal in the presence of interference or noise. The system and method thus enables a node, such as a mobile user...
7068704 Embedded chirp signal for position determination in cellular communication systems  
Systems and methods are described here for locating the position of a mobile terminal in a cellular communications system. A base station in the cellular communication system broadcasts a...
7068742 Method and apparatus for resolving multipath components for wireless location finding  
A method and apparatus that provides an accurate estimate of the time and amplitude of arrival of the first arriving overlapping multipath components (rays) in wireless locating finding systems....
7065158 Detection method for phase-modulated symbols with a correlator-bank  
Detection of a symbol from a received signal wherein the symbol is a selected symbol out of a predetermined set of symbols, wherein each symbol of the predetermined set is a complementary coded...
7065162 Method and system for down-converting an electromagnetic signal, and transforms for same  
Methods, systems, and apparatuses, and combinations and sub-combinations thereof, for down-converting an electromagnetic (EM) signal are described herein. Briefly stated, in embodiments the...
7065375 Process and device for estimating the speed of movement of a mobile terminal, in particular a cellular mobile telephone capable of operating according to the UMTS standard  
A process for estimating a speed of movement of a mobile terminal operating in a wireless communication system and communicating with a base station via a transmission channel includes estimating...
7061975 Noncyclic digital filter and radio reception apparatus comprising the filter  
In accordance with the invention, in a nonrecursive digital filter, the number of times each bit of input data passes through a shift register is reduced to save power. Despreading data is sent to...
7058151 Apparatus and method for achieving symbol timing and frequency synchronization to orthogonal frequency division multiplexing signal  
A frequency and symbol timing synchronization apparatus for orthogonal frequency division multiplexed (OFDM) signals, and a method performed by the apparatus are provided. This apparatus includes...
7058119 Parallel architecture digital filter and spread spectrum signal receiver using such a filter  
This invention relates to parallel architecture digital filter and signal receiver with spectrum spreading using such a filter, the filter may have p shift registers (R p , R i ) with means for...
7058148 Method for selecting modulation detection in receiver, and receiver  
A method for selecting a modulation detector in a receiver and a receiver which includes a first and a second modulation detector, mechanisms for determining at least one cross-correlation value...
7054394 Doppler shift and spread estimation method and apparatus  
For a noise resistant estimation of a Doppler spread for a radio signal transmission channel in a mobile communications environment, the Doppler spread is estimated on the basis of an...
7054299 Method and apparatus of pilot signal synchronization verifier  
Briefly, in accordance with one embodiment of the invention, a verifier and a method for verifying synchronization of at least one pilot signal pattern of a wireless communication system are...
7054347 Communication apparatus  
Signals sent from a sender by a code division multiple access communication system are input respectively into first to Mth delay units which are disposed parallel to one another. The correlation...
7042931 Path detection method and receiver  
A path detection method comprises; a correlator which receives input of a baseband signal converted to a digital signal in a wireless receiver, and which takes a reverse spread produced by the...
7042924 Synchronization establishing and tracking circuit for CDMA base station  
A synchronization establishing and tracking circuit for a CDMA base station is composed of a first spreading code generator, a first correlator, a second spreading code generator, a second...
7042930 Spread spectrum bit boundary correlation search acquisition system  
A multiple integration hypothesis C/A code acquisition system resolves bit boundaries using parallel correlators providing magnitude hypotheses during acquisition to reduce losses over the 20 ms...
7039134 Reduced complexity correlator for use in a code division multiple access spread spectrum receiver  
A reduced complexity correlator that enables the re-use of the most complex portions of a correlator, namely the multiplier and adder. The correlator of the present invention is especially...
7039091 Method and apparatus for implementing a two dimensional correlator  
A method for managing a code sequence according to a first embodiment of the present invention is disclosed. Sets of n contiguous sample values that include sample values in a plurality of sample...
7035357 Process and device for extracting digital data contained in a signal conveyed by an information transmission channel, in particular for a cellular mobile telephone  
A device includes a receiver including an estimation block for estimating the impulse response of the transmission channel and a transformation block. The transformation block may include a...
7031377 Receiver and low power digital filter therefor  
A digital filter or a receiver including a digital filter having at least two multiple stage shift registers. A plurality of multipliers corresponding in number to the number of stages in the at...
7031376 Fast initial acquisition and search device for a spread spectrum communication system  
A fast initial acquisition and search device for a spread spectrum communication system is disclosed herein. The search device includes a memory for storing the first code sequence, and a plurality...
7031265 Method and apparatus for performing packet detection processing  
A method and apparatus for performing packet processing is described. A signal having a preamble sequence is received. A detection parameter estimate is derived from the preamble sequence. The...
7027534 Extracting fine-tuned estimates from correlation functions evaluated at a limited number of values  
Techniques are provided for fine-tuning estimates of a delay value for a sampled signal. One aspect of the invention is to perform, for the sampled signal, coarse-grained calculations of the In...
7023901 Spreading factor estimation system and method  
Spreading factor (SF) estimation in a code division multiple access (CDMA) spread spectrum system where the SF of the data channel may change on a frame-by-frame basis to reflect a change in the...
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...
7023897 Transmission circuit  
A transmission circuit includes a baseband circuit, spreading section, multiplier, digital modulator, quadrature modulator, and antenna. The baseband circuit generates and outputs at least one...
7020116 Method and apparatus of data transmission  
A data transmission apparatus employing an orthogonal frequency division multiplex system. A receiver included therein analyzes a cross-correlation value sequence signal (CT) which has been...
7020224 Ultra-wideband correlating receiver  
A receiver for ultra-wideband communications is provided. One feature of the receiver architecture is that includes only a single correlator. The receiver may be used in wireless and wire...
7020176 Method and system for downlink channelization code allocation in a UMTS  
A method and system for downlink channelization code allocation or assignment in a Universal Mobile Telecommunication System (UMTS) are presented. The method and system generate an optimal...
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...
7010020 Code tracking loop with automatic power normalization  
The present invention is for a receiver incorporated into User Equipment (UE) or base stations of a code division multiple access (CDMA) communication system. The UE and base station are in...
7010071 Method of generating and/or detecting synchronization sequences, synchronization method, transmitter unit and receiver unit  
Method for forming and/or determining a synchronization sequence, a synchronization method, a transmitting unit and a receiving unit, the formation of synchronization sequences, which are based on...
7010023 Path search circuit for simultaneously performing antenna directivity control and path search  
A path search circuit simultaneously performs antenna directivity control and a path search. A weighting controller controls weighting coefficients to establish an antenna directivity in a...
Matches 301 - 350 out of 1056 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >