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7626921 Wireless communication method using OFDM and OFDM transmitter and receiver thereof  
A wireless communication method includes generating and transmitting an OFDM signal containing a first OFDM symbol possessing a first transmitting pilot signal and a second transmitting pilot...
7586837 Acquisition of a gated pilot signal  
Systems and techniques are disclosed detecting an embedded signal which includes producing a plurality of first correlated values from a portion of the first signal and a second signal,...
7558327 Pattern position measuring device, method, and program, and record medium on which the program is recorded  
The position of a specific pattern such as a known symbol in a signal such as an OFDM signal is estimated with high accuracy. An effective symbol extraction section extracts a known symbol...
7539258 Audio data sync format detecting circuit  
The present invention provides an audio data sync format detecting circuit that can minimize both the hardware configuration software processing, and furthermore, has a large flexibility with...
7539209 Method and device for preserving pacing information across a transport medium  
The invention relates to data communications, more particularly to a protocol encapsulation technique which captures the time between frames at a transmitting site for comparison with an idle...
7535967 Method and apparatus for transmission and reception within an OFDM communication system  
In an OFDM system the same Walsh code is used at the same time for a plurality of transmitters. The multiple transmitters can be from the same, or different devices (e.g., different base stations...
7508842 Method and apparatus for pilot signal transmission  
A method and apparatus for pilot signal transmission is disclosed herein. In particular, a pilot transmission scheme is utilized where pilot sub-carrier bandwidth differs from data sub-carrier...
7483473 Access channel structure for wireless communication system  
A technique for efficient implementation of pilot signals on a reverse link in a wireless communication system. An access channel is defined for the reverse link such that within each frame, or...
7471728 Multicarrier signal, method of tracking a transmission channel based on such a signal and device therefor  
The invention provides a multicarrier system constructed on a time-frequency lattice defined comprising frames having MxN symbols distributed over M subcarriers each of which is divided into N...
7471702 Methods and apparatus for implementing, using, transmitting, and/or receiving signals at least some of which include intentional null tones  
Base stations transmit strip signals using strip signal segments and self supporting modulation scheme techniques facilitating rapid channel estimate. A strip segment occupies one OFDM symbol time...
7457231 Staggered pilot transmission for channel estimation and time tracking  
To allow a receiving entity to derive a longer channel estimate while limiting overhead, a transmitting entity transmits a pilot on different groups of subbands in different time intervals. N...
7453912 Methods and apparatus for selecting between multiple carriers based on signal energy measurements  
Carrier frequency selection and handoff initiation methods in wireless communications systems employing multiple carrier frequencies are described. Although the receiver is tuned to a single band,...
7450489 Multiple-antenna communication systems and methods for communicating in wireless local area networks that include single-antenna communication devices  
In a wireless local area network (WLAN) that includes high-throughput communication devices with multiple antennas and legacy communication devices with single antennas, training tones are...
7447187 Reverse link pilot integrated with block codes  
A technique for encoding digital communication signals. Data symbols are augmented in pilot symbols inserted at predetermined positions. The pilot augmented sequence is then fed to a deterministic...
7436758 Apparatus and method for transmitting/receiving pilot pattern set to distinguish base station in orthogonal frequency division multiplexing (OFDM) communication system  
An apparatus and method for transmitting/receiving a pilot pattern set to distinguish a base station in an FDM communication system. The method divides a total frequency bandwidth into at least two...
7433339 Data transmission method and equipment  
Equipment for transmitting a signal, the equipment comprising an antenna array ( 600 - 606 ) for providing three or more radiation antenna patterns. The equipment is arranged to transmit a primary...
7366226 Pilot channel tracking method based on multipath barycenter tracking loop  
The present invention discloses a method for pilot channel tracking based on multipath channel barycenter tracking loop, comprises steps of evaluating multipath fading channel parameters,...
7319718 CQI coding method for HS-DPCCH  
In the channel quality information (CQI) coding method of the present invention, first basis sequences for generating sub-codes of 32 bits are created, and second basis sequences for generating...
7313174 Method for extracting a variable reference pattern  
A method is provided for extracting a sequence of pilot symbols enabling to estimate the transfer function of a transmission channel. At least a radiocommunication device communicates through the...
7308063 Apparatus, and associated method, for effectuating post-FFT correction of fine frequency offset  
In an orthogonal frequency division multiplexing (OFDM) system, a receiver of an OFDM signal via an air interface defines training symbols to be included in the frame structure of the air interface...
7298773 Apparatus and method for reporting service load to mobile station in mobile telecommunication system  
There is provided a method and apparatus for selecting an appropriate base station and an optimal data rate to provide a voice service and a data service based on a voice service load in a CDMA...
7292606 Two-stage symbol alignment method for ADSL transmission in the presence of TCM-ISDN interferers  
Method embodiments for achieving hyperframe symbol synchronization are disclosed, along with device and system embodiments for implementing such methods. In one embodiment, the method comprises:...
7286508 Signal format in multi-carrier CDMA transmission system  
A multi-carrier CDMA transmission system signal format that reproduces data symbols, aligns the reproduced data symbols along a frequency axis, multiplies the reproduced data symbols by a spreading...
7283510 Wireless receiver estimating power of interference  
By providing a interference power estimation unit obtaining the power of interference in a common pilot signal with ten symbols in one slot and outputting the power of interference as the estimate...
7236468 Apparatus and method for generating reference timing in a CDMA mobile communication system  
A cell search apparatus and method in a W-CDMA mobile communication system. The cell search apparatus and method performs a first cell search step, a second cell search step, and a third cell...
7227854 Apparatus and method for transmitting CQI information in a CDMA communication system employing an HSDPA scheme  
A user equipment (UE) located in a soft handover region transmits channel quality indicator (CQI) information bits for informing a Node B of quality of a downlink channel through a CQI field and a...
7203255 Method and system to implement non-linear filtering and crossover detection for pilot carrier signal phase tracking  
Systems and methods for correcting phase ambiguity in a total pilot phase value are presented. Examples include comparing and correcting total pilot phase values having different pilot frequencies...
7039003 Radio communication apparatus and radio communication method  
Symbol 102 that is spread with the only short spreading code and inserted in synchronism with a long spreading code is specified by detecting the correlation with only the short spreading code....
6973098 Method and apparatus for determining a data rate in a high rate packet data wireless communications system  
In a wireless communication system a method for combination transmission of packet data and low delay data. In one embodiment a parallel signaling channel provides a message to receivers indicating...
6965739 Optical communication system  
An optical communication system for optically transmitting transmission data from a transmitting station to a transmitting device includes an adder for adding an intermediate frequency subcarrier...
6965589 Time offset technique for increasing the capacity of a CDMA system  
The invention is a method for limiting the peak transmit power in a CDMA communication system including the steps transmitting a first communication signal having a first high transmit power region...
6952417 System and method for selectively providing data communications in an XDSL communication system  
A system and method selectively establishes data communications, such as XDSL services, between data devices and a network switch. Status of the data devices are monitored and active data devices...
6925157 Method for operating devices for transmitting high-bit-rate data on an extension line and arrangement having such devices for data transmission  
In a method and apparatus for data transmission and voice signal transmission on a subscriber line, in terminal devices located at least on a network side of the subscriber line, only those parts...
6909761 Digital communication system having improved pilot encoding  
A time division multiple access communication system is provided having multiple sub-channels according to known quadrature amplitude modulation techniques. Each sub-channel has a pre-determined...
6813478 Method and apparatus for searching a gated pilot  
Techniques to search for a gated pilot reference in a wireless communication system. In one method, an overall code space in which the pilot may be found is partitioned into a number of groups of...
6724738 Method and apparatus for acquiring a pilot signal in a CDMA receiver  
A searcher receiver ( 114 ) includes a sample buffer ( 202 ) which stores signal samples loaded using a real time clock. A real time linear sequence generator (RT LSG) ( 206 ) stores an initial...
6658050 Channel estimates in a CDMA system using power control bits  
A transceiver transmits signals with power control bits, the power control bits instructing the other transceiver to establish selected power levels for its return signal. In one form, a processor...
6621811 Method and system for generating multiple pilot beacons of different frequencies from a single pilot beacon  
A method and system for producing a plurality of pilot beacon signals with different carrier frequencies is disclosed. One original pilot beacon signal is first obtained, and a splitter is used to...
6590873 Channel structure for forward link power control  
The invention is a method for controlling power on multiple forward link communication channels by using multiple power control sub-channels, wherein each power control sub-channel is associated...
6535549 Method and apparatus for carrier phase tracking  
A method and telecommunication system for tracking the carrier phase of a received signal includes the addition of a pilot signal to the data component of the signal prior to modulation and...
6526069 Synchronization device for a synchronous digital message transmission system and process for producing a synchronous output signal  
A synchronization device for a synchronous digital message transmission system producing a synchronous output signal including successive transport modules synchronized to a frame clock from a...
6490265 CDMA receiver phase tracking system  
Despreading means 10 despreads a pilot signal included in a first received signal 1 . Strength determination means 15 determines the strength of the despread pilot signal. Integration control...
6424642 Estimation of doppler frequency through autocorrelation of pilot symbols  
A circuit coupled to receive a sequence of signals is designed with a multiplication circuit ( 416, 420 ) coupled to receive a first signal, a second signal and a complex conjugate of the first...
6393010 Time offset technique for increasing the capacity of a CDMA system  
A method for limiting the peak transmit power in a CDMA communication system including the steps transmitting a first communication signal having a first high transmit power region and transmitting...
6137772 Method of updating a list of digital control channels (DCCH) in a mobile station in a radio telecommunications network  
A method of providing a list of digital control channel (DCCH) frequencies that are in use in a radio telecommunications network to a mobile station operating in the network. Each DCCH includes a...
6122334 Pilot signal detection filter for a wireless communication device  
A novel and improved apparatus for a wireless communication device, which provides fast detection and validation of pilot signals while minimizing the probability of false detection. In the...
6122246 Apparatus and method for clock synchronization in a multi-point OFDM/DMT digital communications system  
A multi-point communications system is set forth herein. The communications system comprises a transmitter for transmitting OFDM/DMT symbols over a predetermined number of bins across a...
6108351 Non-linearity estimation method and device  
The process is characterized in that the pilot signals (10) generated upstream of the device (11) whose non-linearity it is desired to measure pass through a known non-linear device (15) delivering...
5978413 Method and system for processing a plurality of multiple access transmissions  
A method and system incorporating the use of interference cancellation during synchronized demodulation of a code division multiple access (CDMA) signal is described. A wireless communications...
5960029 Coherent dual-channel QPSK modulator/demodulator for CDMA systems, and modulating/demodulating methods therefor  
A coherent dual-channel QPSK modulator/demodulator for a CDMA system, and modulating/demodulating methods therefor, are disclosed, in which the crosstalk interferences between an I-channel and a...
Matches 1 - 50 out of 166 1 2 3 4 >