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7620116 |
Technique for determining an optimal transition-limiting code for use in a multi-level signaling system
A technique for determining an optimal transition-limiting code for use in a multi-level signaling system is disclosed. In one particular exemplary embodiment, the technique may be realized as a...
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7613400 |
Multi-level optical data communication circuit
A driver circuit is coupled to an optical waveguide transmitter. The driver circuit has a current generator that is in series with the transmitter, and a current robbing circuit is coupled to the...
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7613243 |
Interleaver and parser for OFDM MIMO systems
A MIMO wireless system includes a transmitter that has a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the...
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7587002 |
Wireless transmitting and receiving device and method
A wireless device, method, and signal for use in communication of a wireless packet between transmitting device and a wireless receiving device via a plurality of antennas, wherein a signal...
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7580472 |
Generation and detection of non-binary digital sequences
Method and apparatus for generating ternary and multi-valued Gold sequences, are disclosed. Also methods to detect ternary and multi-valued sequences are disclosed. The detection can be performed...
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7570713 |
System and method for anticipatory receiver switching based on signal quality estimation
A system and method of switching from a first receiver receiving a constant bit rate signal to a second receiver receiving the constant bit rate signal, where the constant bit rate signal received...
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7558326 |
Method and apparatus for sending auxiliary data on a TMDS-like link
A communication system including a transmitter, a receiver, and a TMDS-like link, in which video data and auxiliary data (typically including timing data associated with other auxiliary data) are...
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7548599 |
Method and apparatus for reducing cross-talk with reduced redundancies
A method and apparatus are disclosed for reducing cross-talk in an unbalanced channel with a reduced number of redundancies. A cross-talk canceller is disclosed that uses a multi-dimensional finite...
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7541947 |
Semiconductor devices, a system including semiconductor devices and methods thereof
Semiconductor devices, a system including said semiconductor devices and methods thereof are provided. An example semiconductor device may receive data scheduled for transmission, scramble an order...
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7526050 |
CCK demodulation via symbol decision feedback equalizer
Demodulation techniques for a wireless communication system make use of a decision feedback equalization (DFE) technique to mitigate the effects of multipath channel characteristics on receiver...
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7522678 |
Method and apparatus for a data-dependent noise predictive viterbi
An improved Viterbi detector is disclosed in which each branch metric is calculated based on noise statistics that depend on the signal hypothesis corresponding to the branch. Also disclosed is a...
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7519140 |
Automatic frequency correction PLL circuit
An automatic frequency correction phase-locked loop (PLL) circuit includes an analog control circuit and a digital control circuit. The digital control circuit includes a High-side comparator and a...
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7496149 |
Methods and apparatus for signaling on a differential link
Methods and apparatus are disclosed for transitioning a receiver from a first state to a second state using an in-band signal over a differential serial data link.
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7486741 |
Wireless transmitting/receiving device and method thereof
The present invention discloses a wireless transmitting/receiving apparatus for transmitting and receiving large amounts of digital data using a commercial wireless transmitting/receiving...
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7480342 |
Soft value calculation for multilevel signals
A sub-optimal method is disclosed for calculating the reliability values (soft values) for the bits of a multilevel signal. The log-likelihood values are approximated using only the dominant terms,...
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7469016 |
Circuit for generating ternary signal
A circuit for generating a ternary signal that receives a binary input-control signal and a binary reset signal and outputs a ternary signal. The circuit includes first to third transistors, each...
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7466765 |
Receiver for high bitrate binary signals
A receiver for high bitrate binary signals contains a soft decision circuit with three parallel deciders coupled to a 2:1 multiplexer. The three deciders have different threshold values and...
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7397862 |
Method of designing interleavers for multiple-encoder MIMO OFDM systems
An improved interleaver design to fully explore the diversity of the MIMO OFDM systems provides higher diversity gain than usual. A method for wireless data communication using such interleaver...
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7394875 |
Beaulieu series approach to optimal UMTS RACH preamble detection estimation
A method for preamble detection in mobile unit to base unit wireless telephony sets a preamble detection threshold based upon a Beaulieu series computation dependent upon preamble correlation data....
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7391834 |
Pulse amplitude modulated system with reduced intersymbol interference
A system and method for encoding and receiving data is provided. The data is encoded as a pulse amplitude modulated signal such that the amplitude signals do not transition from the highest signal...
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7391816 |
Decoding upstream V.92-encoded signals
A decoder may include a constellation mapper arranged to receive a symbol and to determine two constellation points that are proximate the received symbol. An index mapper may determine a...
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7366470 |
Inter-modulation distortion compensation
An Inter-modulation distortion measurement and correction method which could be applied over a communication channel that is a combination of either or both analog and digital channels. This method...
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7359450 |
Digital transmission of broadcast signals, including HDTV signals, over a microwave link
Methods and apparatus are provided for the provision of high definition television services over an analog or digital broadcast infrastructure. In one aspect, the present invention provides a...
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7355532 |
voltage level coding system and method
We describe a voltage level coding system and method. The voltage level coding system includes a level encoder having an input to receive data segments coded using a first code and an output to...
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7342459 |
Clock reproduction circuit
A clock reproduction circuit receives a multi-valued input data signal to generate a reproduced clock signal with a higher accuracy. The clock reproduction circuit includes a data judgement block...
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7340657 |
On-chip high-speed serial data analyzers, systems, and associated methods
In an embodiment, a method includes forming a plurality of time/voltage points from a number of voltage values and from a number of time values, generating serialized data having a predetermined...
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7339502 |
Method and device for transmitting data over a plurality of transmission lines
In the case of a method and a device for transmitting data units by way of a transmission medium that comprises at least three adjacent transmission lines, first of all a plurality of codes is...
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7313195 |
PAPR reduction method using bit reallocation
A PAPR reduction method using bit reallocation is disclosed, which is applied in a multi-carrier system. The lowest total transmission power P is achieved by a bit loading algorithm conditioned on...
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7308058 |
Transparent multi-mode PAM interface
Provided are a method and apparatus for high-speed, multi-mode PAM symbol transmission. A multi-mode PAM output driver drives one or more symbols, the number of levels used in the PAM modulation of...
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7308044 |
Technique for receiving differential multi-PAM signals
A technique for receiving differential multi-PAM signals is disclosed. In one particular exemplary embodiment, the technique may be realized as a differential multi-PAM extractor circuit. In this...
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7295638 |
Communication device
A direct sequence spread spectrum (DSSS) receiver ( 100 ) consistent with certain embodiments has a frequency generator ( 112 ) that generates a local oscillator signal without use of a...
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7272194 |
Method to transmit bits of data over a bus
A method to increase data transmission over a SCSI bus is provided including assigning a voltage level to each one of a plurality of bit combinations, and generating a signal level having the...
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7257129 |
Memory architecture with multiple serial communications ports
A serial communications architecture for communicating between hosts and data store devices. The Storage Link architecture is specially adapted to support communications between multiple hosts and...
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7251207 |
Multi-level data processing method and apparatus
A multi-level data processing method converts a binary data into a multi-level data having n bits per symbol, where n is an integer satisfying n≧2. A {(n−1)×m}-bit binary data is arranged in...
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7230994 |
Multi-level modulation apparatus, multi-level demodulation apparatus, multi-level modulation/demodulation communication system, program and modulation/demodulation method
In a QAM modulation system, (3p+1) or (3p+2) input signal strings, where p is an integer not less than 3 or 2, are converted into three (p+1) string signals which are then allocated to three phase...
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7212580 |
Multi-level signal clock recovery technique
Clock recovery of a multi-level (ML) signal can be performed in a two-step process. First, the transitions within the ML signal can be detected by a novel transition detector (TD). And second, the...
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7190737 |
Multi-mode block-coded modulation/demodulation method
In digital communications, a multi-mode block-coded modulation/demodulation method carries out adaptive one-way transmission of a multi-mode digital signal by using, between at least two different...
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7180957 |
Technique for utilizing spare bandwidth resulting from the use of a transition-limiting code in a multi-level signaling system
A technique for utilizing spare bandwidth resulting from the use of a transition-limiting code in a multi-level signaling system is disclosed. In one particular exemplary embodiment, the technique...
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7170930 |
Receiver
A method of equalizer adaptation involves comparing equalizer output values with a center threshold, and with at least one of a pair of outer thresholds, and adapting the equalizer in order to...
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7167527 |
System and method for multi-symbol interfacing
In one aspect, apparatus and method are provided for communicating data in the form of transmission symbols conveyed in a carrier signal, wherein each transmission symbol is from a symbol set...
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7158604 |
Method and apparatus for superimposing differential signals onto a set of binary signals to increase the information-carrying capacity of the original set of signals
A system and method for the superimposition of differential signals on binary signals in a memory system. The technique can be performed on busses, and in many kinds of storage media. It can be...
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7155134 |
Pulse amplitude modulated transmission scheme for optical channels with soft decision decoding
An amplitude modulated optical communication system and method are disclosed that achieve bandwidth compression by making use of an n level amplitude modulation scheme in one or more frequency...
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7145439 |
Powered device interface circuit
A method for communicating multi-bit data from a powered device being powered over communication cabling to power sourcing equipment, the method comprising: exhibiting a signature indicative of a...
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7142612 |
Method and apparatus for multi-level signaling
A system transmits data on a multi-conductor signal path, which produces a current flow based on the value of the data transmitted. The system reduces changes in current flow between successive...
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7127003 |
Method and apparatus for communicating information using different signaling types
Systems, methods, apparatuses, and arrangements enable information to be communicated across a link using different types of signaling. For example, a first type of information is communicated...
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7113121 |
Communication driver
An Ethernet controller includes a decoder, and T sets of transmit circuits. Each set of transmit circuits receives one of T decoded signals from the decoder, and includes a digital-to-analog...
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7110681 |
Method and apparatus for optical transmission
Binary information is subjected to RZ encoding and multi-level encoding, and the encoded signal is optically modulated.
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7106793 |
Method, device, and interface for transmitting data
A method, a device, and an interface for transmitting data between at least two subscribers, at least one first subscriber transmitting a pulse-width-modulated data signal. The at least second...
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7072415 |
Method and apparatus for generating multi-level reference voltage in systems using equalization or crosstalk cancellation
A system and method are shown for generation of at least one reference voltage level in a bus system. A reference voltage generator on a current driver includes at least one reference voltage...
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7072406 |
Serial interface and method for transferring digital data over a serial interface
A digital serial interface connects a transmitting device with a receiving device for communicating both data bits and synchronization signals via the serial interface. The transmitting device...
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