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Class Information
Number: 375/224
Name: Pulse or digital communications > Testing
Description: Subject matter in which at least part of the system is tested.

Sub-classes under this class:

Class Number Class Name Patents
375/225 Data rate 452
375/226 Phase error or phase jitter 553
375/227 Signal noise 545
375/228 With indicator 241

Patents under this class:

Patent Number Title Of Patent Date Issued
8391167 Method to precisely and securely determine propagation delay and distance between sending and receiving node in packet network and packet network node system for executing the method Mar. 5, 2013
8385510 Method for transmission line analysis Feb. 26, 2013
8385457 Methods and systems to compensate IQ imbalance in wideband zero-if tuners Feb. 26, 2013
8385395 Method and apparatus for determining a quantized channel vector Feb. 26, 2013
8379742 Estimating channel conditions in a MIMO OFDM communication system Feb. 19, 2013
8379707 Signal analyzer and methods for displaying constellations Feb. 19, 2013
8379705 Hierarchical feedback of channel state information for wireless communication Feb. 19, 2013
8379703 Signal analyzer and method for displaying frequency domain data Feb. 19, 2013
8375239 Clock control signal generation circuit, clock selector, and data processing device Feb. 12, 2013
8374640 Controlling a communication system Feb. 12, 2013
8374552 Concurrent testing of multiple communication devices Feb. 12, 2013
8374230 Apparatus and methods for displaying signal characteristics Feb. 12, 2013
8374229 Method for the detection and generation of a useful signal and associated devices and communications system Feb. 12, 2013
8374228 Geographic locating remote endpoint monitor device, system, and methodology thereof Feb. 12, 2013
8374227 Digital signal analysis with evaluation of selected signal bits Feb. 12, 2013
8370706 Interleaved correction code transmission Feb. 5, 2013
8369792 Methodology to analyze sector capacity in data-only mobile-wireless network Feb. 5, 2013
8369452 Majority detector apparatus, systems, and methods Feb. 5, 2013
8369395 Portable apparatus and method of measuring wireless channel and multiple antenna correlation Feb. 5, 2013
8369394 Systems and methods for loop length and bridged tap length determination of a transmission line Feb. 5, 2013
8369391 Method and arrangement in a digital subscriber line system Feb. 5, 2013
8363771 Transmission device, receiving device and communication system Jan. 29, 2013
8363742 Method and apparatus for detecting received signal in wireless communication system Jan. 29, 2013
8363736 Test circuit for serial link receiver Jan. 29, 2013
8363708 Receiving circuit, method for receiving a signal, and use of a detection circuit and a control circuit Jan. 29, 2013
8358726 Method for source synchronous high-speed signal synchronization Jan. 22, 2013
8358682 Signal processing apparatus, test system, distortion detecting apparatus, signal compensation apparatus, analytic signal generating apparatus, recording medium and analytic signal generating m Jan. 22, 2013
8356223 Apparatus and method for testing and debugging an integrated circuit Jan. 15, 2013
8355467 Amplitude probability distribution measurement apparatus Jan. 15, 2013
8355428 Data receiving device Jan. 15, 2013
8355426 Decoding data transmitted using space-time spreading in a wireless communication system Jan. 15, 2013
8351882 Amplifying a transmit signal using a fractional power amplifier Jan. 8, 2013
8345736 Sampling point detection circuit, transmission system, pre-emphasis intensity adjustment method, logic analyzer, and evaluation method for evaluating transmission path Jan. 1, 2013
8345735 Modulation and demodulation apparatus using frequency selective baseband and transmission and reception apparatus using the same Jan. 1, 2013
8345734 Time error estimation for data symbols Jan. 1, 2013
8340219 Receiver and receiving method for scalable bandwith Dec. 25, 2012
8340168 Smart grid radio-frequency interference (RFI) detection Dec. 25, 2012
8340166 Smart grid radio-frequency interference (RFI) detection Dec. 25, 2012
8340165 Method and system for analyzing error probability of communication system using Gaussian Q function Dec. 25, 2012
8340164 Evaluation of the feedback quality in communications systems Dec. 25, 2012
8335246 Smart grid radio-frequency interference (RFI) detection Dec. 18, 2012
8331431 Signal transmission apparatus and method of controlling the apparatus Dec. 11, 2012
8331430 Channel diagnostic systems and methods Dec. 11, 2012
8331259 Apparatus and method for adaptively generating channel quality indicator in wireless communication system Dec. 11, 2012
8327212 Error identifying method, data processing device, and semiconductor device Dec. 4, 2012
8326365 Sectorized base stations as multiple antenna systems Dec. 4, 2012
8325867 Waveform signal generator with jitter or noise on a desired bit Dec. 4, 2012
8320440 Equalizer circuit Nov. 27, 2012
8320436 Calibrating received signal measurements in a communication device Nov. 27, 2012
8315345 Closed loop power normalized timing recovery for 8 VSB modulated signals Nov. 20, 2012

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