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7609610 |
Data transmission method, data reception method, transmission device and reception device using the same, and communication system using the same
When data is transmitted on a burst basis, a symbol having a higher modulation level is inserted into parts of a burst on a symbol basis and this burst is transmitted. When the data including this...
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7607165 |
Method and apparatus for multiplication and/or modular reduction processing
The subject invention relates to a method and apparatus for multiplication of numbers. In a specific embodiment, the subject invention can be used to perform sequential multiplication. The subject...
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7606165 |
What-if analysis for network diagnostics
A network troubleshooting framework is described. In an implementation, a method includes generating a first estimation of network performance by a simulator based on network settings obtained from...
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7599390 |
Approximate bit-loading for data transmission over frequency-selective channels
A high-speed communications system utilizes approximate bit-loading during data transmission in a channel. In one embodiment, a plurality of parallel data preparation circuits in a data...
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7599348 |
Digital E8-VSB reception system and E8-VSB data demultiplexing method
An enhanced 8-VSB reception system and E8-VSB data demultiplexing method, by which an E8-VSB signal can be stably received as well as a previous ATSC 8VSB signal, is disclosed. Herein, the enhanced...
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7596081 |
Method and system for training sequences
Methods and systems for training sequences are provided. In one embodiment, a bi-directional communication system comprises: a multipoint-to-point host unit; and a plurality of remote units...
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7593697 |
Adaptive coding and modulation
The present invention provides a unique feedback system in a wireless communication system wherein the transmission channel is always overloaded with data, which is configured and modulated at a...
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7586835 |
Apparatus for generating 2D spreading code and method for the same
An apparatus for generating a 2D spreading code and method for the same are proposed. The apparatus for generating the 2D spreading code includes a column counter, a row counter, a codeword...
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7584259 |
System and method for providing service technicians access to dispatch information
A secondary source of dispatch information is provided in the event of a failure of a primary source of dispatch information. The second source of dispatch information can be accessed...
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7583736 |
Radio transmission device, radio reception device, and method for selecting transmission cancellation subcarriers
Of systematic bits (S) and parity bits (P 1 , P 2 ) generated by coding (coding rate R=1/3) transmission bits, subcarriers to which parity bits are mapped are designated as candidates for...
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7583694 |
Data definition apparatus, systems, and methods
An apparatus and a system, as well as a method and article, may operate to send a selected data type without self-definition information to a receiver if a state capable of interpreting the...
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7583583 |
System and method for reducing peak-to-average power ratio in orthogonal frequency division multiplexing signals using reserved spectrum
A method and apparatus for reducing the peak to average power ratio of an OFDM signal. The method involves operating on the signal only after it is converted to the time domain where the signal is...
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7577160 |
MB-OFDM transmitter and receiver and signal processing method thereof
A method of improving frequency diversity of a signal that includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols comprises receiving an input data sequence, mapping the...
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7574175 |
Method and system for selective equalization enablement based on modulation type
Aspects of a method and system for selective equalization enablement based on modulation type may be found in a method for processing a radio frequency (RF) signal that comprises receiving a...
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7570577 |
Apparatus, method, and program for detecting communication parameter
A correlation signal generating circuit generates a duplicate signal for correlation processing based on a multiplex duplication signal. An autocorrelation circuit performs autocorrelation...
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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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7567501 |
Embedded keying
Method of communicating digital data in which frames ( 8 ) are transmitted cyclically whereby a first number of symbols is transmitted according to a first keying mode (II) using a first...
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7564908 |
Method and apparatus for encryption of over-the-air communications in a wireless communication system
A communication device converts a bit stream to multiple symbols and provides encryption at a physical layer by shifting a phase of each symbol of the multiple symbols to produce multiple encrypted...
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7561509 |
Method and apparatus for scheduling and modulation and coding selection for supporting quality of service in transmission on forward shared radio channels
The invention is a process and system for controlling selection of which MS is to receive the next packet data transmission on a forward channel and selection of which plural MCS is to be used for...
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7558189 |
Image signal cancel-type heterodyne reception method and direct conversion orthogonal frequency division multiplexing reception method
According to an image signal cancel-type heterodyne reception method, I-phase and Q-phase intermediate-frequency signals can be modulated using two orthogonal signals, superimposed one on the...
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7545731 |
Virtual buffer size management system for the transmission of blocks of data bits in an HS-DSCH downlink channel of a mobile communications network
A first rate matching stage matches a number of input bits coming from a transport channel including a high-speed downlink shared channel (HS-DSCH) of a block of data bits to be transmitted from a...
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7542726 |
Methods and apparatuses for detecting the TX diversity mode for mobile radio receivers
In a method and an apparatus ( 1 ) for transmission diversity mode detection in a mobile radio receiver using a decision function, the decision function which is used for detection of the...
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7542722 |
Method and arrangement for minimizing intracell interference in a data transmission system
An arrangement and a method for minimizing intracell and/or intercell interference for a data transmission system comprises a scheduler ( 2 ). A first base station (BS) receives information from...
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7542446 |
Space time transmit diversity with subgroup rate control and subgroup antenna selection in multi-input multi-output communications systems
A method and system transmits an input stream of data symbols in a multiple-input/multiple-output wireless communications system that includes M subgroups of transmitting antennas. A stream of data...
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7539255 |
Using multiple pilot signals for timing error estimation in digital subscriber line communications
A receiving modem ( 20 ) including functionality for adjusting the synchronization of its timing relative to a transmitting modem ( 10 ), by recovering timing from a plurality of pilot tones...
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7539122 |
Device and method for management of the transmission of blocks of data in an HS-DSCH downlink channel of a mobile communications network
A device (D) is dedicated to managing transmission of digital data blocks in High-Speed Downlink Shared Channel (HS-DSCH) downlink transport channel set up between a base station of a...
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7535860 |
Apparatus and method for transmitting/receiving pilot signal in communication system using OFDM scheme
Disclosed is a method for transmitting a pilot symbol from base stations (BSs) to a subscriber station (SS) in a communication system which includes the base stations located adjacent to each...
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7535822 |
Synchronization of remote units for a communication network
A method for maintaining the quality of transmission from a head end to a service unit in a telecommunications system that uses a multi-carrier transmission scheme with dynamic bandwidth allocation...
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7532563 |
Mechanism to improve quality of channel estimates in OFDM transmissions
An OFDM (Orthogonal Frequency Division Multiplexing) system may utilize pilot symbol structures including two or more pilot symbols with pilot information on alternate tones. The pilot information...
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7532562 |
High-data-rate communication link using multiple lower rate modems
A method for communication includes receiving a composite signal, which carries data at a first data rate and includes multiple sub-signals that are interleaved in a time domain and are separated...
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7489622 |
Transmitting apparatus, receiving apparatus, communication system, transmission method, reception method, and communication method
A transmitting apparatus, receiving apparatus, communication system, and a signal processing method for each apply a suitable modulation method and transmission path estimation method in accordance...
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7489621 |
Adaptive puncturing technique for multicarrier systems
Various embodiments are described for adaptive puncturing techniques involving an adaptive bit loading block to select a modulation scheme and a puncturing pattern for each of a plurality of...
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7483365 |
Process for obtaining notches in the transmission of signals over the electricity network
This permits the transmission of signals over the electricity network in such a way that the spectral density of power is adjusted to the regulations in the current rules by means of the...
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7480236 |
Multipoint-to-point communication using orthgonal frequency division multiplexing and identification codes
Systems for multipoint-to-point communication using orthogonal frequency division multiplexing and identification codes are provided. In one embodiment, a system comprises: a host unit; and a...
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7477633 |
Method and apparatus for varying the number of pilot tones in a multiple antenna communication system
Methods and apparatus are provided for varying the number of pilot tones in a multiple antenna communication system. Data is transmitted in a multiple antenna communication system by selecting a...
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7474610 |
OFDM automatic frequency control device and method thereof
An OFDM frequency control device converts an incoming signal from analog to digital and calculates a correlation value between the guard interval and data part from which the guard interval is...
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7471620 |
Method for the selection of forward error correction (FEC)/ constellation pairings for digital transmitted segments based on learning radio link adaptation (RLA)
A method for the selection of forward error correction (FEC)/constellation pairings ( 800 ) for digital transmitted segments based on learning radio link adaptation (RLA) including formatting a...
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7453853 |
Adaptive correlation of access codes in a packet-based communication system
Whether to indicate reception of an access code in a receiver operating in a communications system is determined by receiving a signal and generating a correlation value by correlating the received...
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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...
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7447145 |
Data communication device selecting modulation method with an appropriate threshold value in adaptive modulation
There is provided a digital communication device for performing data communication by selecting an appropriate modulation encoding method. Quality measurement means measures the line quality of...
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7439813 |
Method and system for generating carrier frequencies for UWB application
Apparatus and method for generating first, second and third carrier frequencies of 3432 MHz, 3960 MHz and 4488 MHz respectively, for use in a wireless transmission system deploy only first and...
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7430168 |
Wireless communication apparatus, wireless communication method, and computer program
Disclosed are a wireless communication apparatus, a wireless communication method, and a computer program for intercommunication between a plurality of wireless stations. In a reception standby...
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7430162 |
Interleaving of information bits
The present invention relates to a method in a transmitter for interleaving information bits from a data block into transmission bursts. Each of the information bits is assigned with an index. The...
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7426177 |
Round trip delay adjustment in multipoint-to-point communication using orthogonal frequency division multiplexing
Systems and methods for bidirectional communication are provided. In one embodiment, a method for aligning communications from a plurality of remote units in a multipoint-to-point orthogonal...
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7423958 |
Transmitter for transmitting signals over radio channels and method for transmitting signals over radio channels
A transmitter for sending signals over wireless channels and a method of sending signals over wireless channels are described. The transmitter and the method are used to determine a transfer...
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7420915 |
Radio communications apparatus and radio communications method
The invention performs orthogonal frequency division multiplex processing on a transmission signal to form an OFDM modulation signal (daubed in FIG.) and performs orthogonal frequency division...
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7417944 |
Method for orderwire modulation
Methods for orderwire modulation are provided. In one embodiment, a method for an orthogonal frequency division multiplexing multipoint-to-point communications system comprises: establishing...
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7408872 |
Modulation of signals for transmission in packets via an air interface
The invention relates to a method and to a modulator for modulating signals. The signals are to be transmitted by a device in packets via an air interface. Each packet is supposed to comprise at...
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7406104 |
Terrestrial digital multimedia/television broadcasting system
A system for transmitting information as frames in digital format between users on a network using a single frequency and TDMA and/or CDMA communications. Broadcasting, multicasting and unicasting...
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7406070 |
Adaptive threshold for HS-SCCH part 1 decoding
Whether to abort reception of a multi-part message in a code division multiple access communication system is determined by receiving a part of the multi-part message. Correlating the received part...
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