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7415082 Receiver including synch pulse detection and associated method  
A receiver includes a matched filter matched to a synch pulse and generates a matched filter output signal having peaks and valleys with one of the peaks corresponding to the synch pulse. An...
7415044 Remote synchronization in packet-switched networks  
Remote frequency synchronization is achieved between two or more nodes in a packet-switched network using differential timestamps. A line is fit to multiple differential time values using a minimum...
7409029 Transmission device for automatically set an optimal point for a signal decision making  
There is provided a flexible transmission device capable of automatically setting an optimal point for a signal decision making with high accuracy, so that highly reliable high-quality signal...
7409024 Process for providing a pilot aided phase synchronization of carrier  
A process for providing a phase synchronization of a pilot aided carrier of an input digital signal z(k), the signal z(k) having signal fields of L s symbol signals, namely a block of L P pilot...
7409020 Technique for filter-enhanced clock synchronization  
A technique for filter-enhanced clock synchronization is disclosed. In one particular exemplary embodiment, the technique may be realized by/as a method for filter-enhanced clock synchronization....
7398411 Self-calibrating time code generator  
Provided is a self-calibrating time code generator and method for generating an accurate time code (e.g., an accurate IRIG waveform). The self-calibrating time code generator includes a...
7386082 Method and related apparatus for searching the syncword of a next frame in an encoded digital signal  
A method and apparatus for searching the synchronization signal of a next frame in encoded digital signal without the need of referring to a frame length indication signal. The encoded digital...
7382846 Off-symbol correlation technique  
A method of correlating a signal to a synchronization pattern is disclosed. The signal has a waveform with frequency and phase angle components that may be varied, at each repeated signal pulse, to...
7376194 Method and apparatus for compensating for residual frequency offset in an OFDM system  
Disclosed is a method for compensating for a residual frequency offset in an orthogonal frequency division multiplexing system comprising the steps of: a) performing a fast fourier transform for an...
7369633 Method and apparatus for providing carrier synchronization in digital broadcast and interactive systems  
An approach is provided for supporting carrier synchronization in a digital broadcast and interactive system. A carrier synchronization module receives one or more signals representing a frame that...
7362838 Synchronization method and system, and decoder  
In a system for encoding, transmitting, and decoding data in real time, irrespective of the jittering in a transmission path and the encoding bit rate used, synchronization is established between...
7359314 Signal transmission system for transmitting a signal with a guard interval and a demodulation method thereof  
Difference between a received signal which is an OFDM modulated signal having a guard interval and a delayed signal acquired by delaying the received signal by time equivalent to a data interval is...
7356098 Method, communication system and communication unit for synchronisation for multi-rate communication  
A method, communication system and communication unit for synchronisation for multi-rate communication by transmitting a signal (FIG. 4 A) having a synchronisation portion at a first,...
7352691 Double difference phase detection  
A method that allows a digital communications system to detect the presence of transmitted messages in noisy environments. The system includes an OFDM transmitter and an OFDM receiver. The OFDM...
7349510 Apparatus for data recovery in a synchronous chip-to-chip system  
An apparatus that reduces sampling errors for data communicated between devices uses phase information acquired from a timing reference signal such as a strobe signal to align a data-sampling...
7336750 Optimal one-shot phase and frequency estimation for timing acquisition  
A method and system for an optimal one-shot estimate of phase and frequency for timing acquisition employ a maximum a posteriori (MAP) formulation to calculate a cost function that is a function of...
7336748 DDS circuit with arbitrary frequency control clock  
A test system using direct digital synthesis for generation of a spectrally pure, agile clock. The clock is used in analog and digital instruments in automatic test system. A DDS circuit is...
7336742 Frequency error correction device and OFDM receiver with the device  
A frequency error correction device for an OFDM receiver is proposed. The receiver receives an OFDM signal with a preamble section and a payload section including pilot carriers. The frequency...
7333548 Phase and frequency drift compensation in Orthogonal Frequency Division Multiplexing systems  
A phase drift compensation scheme for multi-carrier systems. According to the invention, a timing offset compensator is provided to compensate for a timing offset in a current symbol after taking...
7333468 Digital phase locked loops for packet stream rate matching and restamping  
A packet stream multiplexer may include one or more control loops (e.g., digital phase locked loops) for tracking the source clock frequency associated with a packet stream. A first control loop...
7330524 Joint synchronization and impairments estimation using known data patterns  
Synchronization and impairment estimations can be performed jointly, thereby saving valuable time for decoding of the received packet. An initial synchronization in a TDMA system can be performed....
7327818 Sync pattern detection method and apparatus  
A sync pattern detection apparatus includes a sync pattern detection unit configured to detect a sync pattern from an input signal, a plurality of sync pattern protection units configured to...
7319728 Delay locked loop with frequency control  
A delay locked loop includes a delay line for delaying an input signal generated from an external signal. A delay controller controls the delay line to keep the external and internal signals...
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...
7295641 Phase alignment circuitry and methods  
The phase of a data signal relative to a reference clock signal is approximated relatively accurately using only relatively coarse increments of phase shift between trial version of a sampling...
7289587 Repeatability over communication links  
Systems, methods, and other embodiments associated with a repeatable communication system are disclosed. One example system for receiving signals from an electronic component over a plurality of...
7277499 Additive DC component detection included in an input burst signal  
A method for processing an input burst signal comprising a first step for identifying an additive DC component and generating an output signal, which is representative for an estimated value of...
7275174 Self-aligning data path converter for multiple clock systems  
A system and method for aligning an input signal ( 24 ) synchronized to a first clock signal ( 22 ) with a second clock signal ( 26 ) The invention includes a mechanism ( 106 ) for generating a...
7272743 Semiconductor integrated circuit  
A circuit according to an embodiment of the present invention comprises a first power supply region supplied with a first power supply voltage, and having a first clock distribution network, a...
7272126 Method and apparatus for beacon discovery in a spread spectrum cellular radio communication system  
An improved apparatus (and corresponding methodology) for discovering beacon signals in a spread spectrum radio communication system is provided, wherein the beacon signals comprise a plurality of...
7263150 Probability estimating apparatus and method for peak-to-peak clock skews  
A probability estimating apparatus and method for peak-to-peak clock skews for testing the clock skews among a plurality of clock signals distributed by a clock distributing circuit, and for...
7260657 Serial data transferring apparatus  
A master unit sends a start signal to a slave unit. When receiving the start signal from the master unit, the slave unit sends, to the master unit, a synchronization field that is a data train...
7254200 System and method for frequency burst detection for GSM/GPRS  
A system, method and computer program product for detecting a frequency burst in a received signal at a wireless receiver is disclosed. The invention predicts the current sample of the received...
7248802 Distribution of a synchronization signal in an optical communication system  
The invention relates to the distribution of a synchronization signal in an optical communication system which is inherently asynchronous. In order to accomplish a cost-efficient mechanism for...
7242734 Frame boundary discriminator  
A frame boundary discriminator has a first input for receiving a high speed master clock signal having a multitude of master clock pulses within a frame, and a second input for receiving...
7239813 Bit synchronization circuit and central terminal for PON systems  
A bit synchronization circuit composed of a multiphase data sampling unit for converting each received burst data sets to multiphase data trains, a phase determination unit for generating a control...
7224754 Frequency offset compensation estimation system and method for a wireless local area network  
A frequency offset compensation estimation system and method for a wireless local area network. First, a preamble sequence of a frequency package is sent to a frequency offset estimation (FOE)...
7221687 Reference timing architecture  
A reference timing architecture is disclosed that provides a level of flexibility that was not available with the architecture in the prior art. In particular, the present invention provides for...
7219250 Status indication detection and device and method  
A status indication detection apparatus comprises an input storage stage, an intermediate storage stage and an output storage stage. Status indications are input into the input register of the...
7212799 Method and apparatus for acquiring and tracking ultrawide bandwidth signals  
A method is provided for fast acquisition in a wireless network. This method involves receiving a first wireless signal at a receiving device, sent from a transmitting device; determining a first...
7194279 Adjustment of a phase difference between two signals  
A method for adjusting a phase difference between a received code modulated signal and a replica code sequence where, in order to enlarge the control range, it comprises a step of determining...
7190709 Early-late correlation for timing error correction in data communication receivers  
A timing error correction technique for use in data communications receivers such as WLAN (Wireless Local Area Network) receivers is provided where an input signal is received that has a timing...
7184506 Frequency drift and phase error compensation in a VOFDM receiver  
Improved frequency drift and phase error compensation in a VOFDM receiver. The invention is operable to compensate for frequency drift and phase error within a window that may include a single...
7181018 Digital stereo recovery circuitry and method for radio receivers  
Stereo recovery circuitry for a digital receiver is disclosed that provides increased accuracy and efficiency in recovering stereo signal information from transmitted stereo signals. The stereo...
7177376 Apparatus and associated method of symbol timing recovery using coarse and fine symbol time acquisition  
A receiver determines a symbol synch time for recovering data from a symbol of signal samples generated in accordance with Orthogonal Frequency Division Multiplexing. Each symbol includes a guard...
7170962 Data transmission  
A circuit for receiving multiple serial datastreams in parallel is disclosed. A bit clock is recovered from each data stream, there being one data bit for each transition of the clock signal both...
7167208 Digital broadcasting receiver and method for compensating color reproduction error of the same  
Digital broadcasting receiver, and method for compensating a color reproduction error therein, the digital broadcasting receiver including a channel decoder, a TP part for demultiplexing a TP...
7162002 Phase-interpolator based PLL frequency synthesizer  
A phase lock loop frequency synthesizer includes a phase rotator in the feedback path of the PLL. The PLL includes a phase detector, a low pass filter, a charge pump, a voltage controlled...
7158597 TFO resynchronization system  
A method and apparatus is provided for use in an inband signaling system for quickly resynchronizing devices in the system after synchronization is lost. Synchronization is quickly established by...
7139320 Method and apparatus for multicarrier channel estimation and synchronization using pilot sequences  
Method and apparatus for OFDM synchronization and channel estimation. In a temporal embodiment, received embedded system pilot symbols are inverse Fourier transformed at expected index locations...
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