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Class Information
Number: 455/67.16
Name: Telecommunications > Transmitter and receiver at separate stations > Having measuring, testing, or monitoring of system or part > Phase measuring (e.g., group delay, propagation effect, etc.)
Description: Subject matter including means to measure the change in phase of propagating waves.










Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
7577446 Weighted least square localization method exploiting multipath channel statistics for non-line-of-sight mitigation Aug. 18, 2009
7570923 I/Q compensation of frequency dependent response mismatch in a pair of analog low-pass filters Aug. 4, 2009
7561885 Positioning system and method using mobile Internet signal Jul. 14, 2009
7558576 Employing frequency offset to compensate for Doppler shift Jul. 7, 2009
7558534 Reliability metrics for parameter estimates which account for cumulative error Jul. 7, 2009
7548741 Dual logarithmic amplifier phase-magnitude detector Jun. 16, 2009
7539458 Apparatus and method for a system architecture for multiple antenna wireless communication systems using round robin channel estimation and transmit beam forming algorithms May. 26, 2009
7529554 Subtractive multipath delay detection May. 5, 2009
7515902 Velocity estimation apparatus in mobile communication environments Apr. 7, 2009
7509095 Method and system for identifying occurrence of shadowing phenomenon during wireless communications Mar. 24, 2009
7509097 Method for determining a measurement time period Mar. 24, 2009
7502359 Radio base station and method of controlling radio communications Mar. 10, 2009
7496330 Phase adjusting method and apparatus Feb. 24, 2009
7493129 Method and apparatus to maintain network coverage when using a transport media to communicate with a remote antenna Feb. 17, 2009
7489904 Method and system for determining the time of arrival of a direct radio signal Feb. 10, 2009
7486934 Service area determination method for determining whether a mobile terminal is in the service area of a repeater or in the service area of a radio base station Feb. 3, 2009
7483712 Transmission power control method, base station, mobile station, and mobile communication system Jan. 27, 2009
7474648 Filtering multipath propagation delay values for use in a mobile communications system Jan. 6, 2009
7468696 Method and device for trilateration using LOS link prediction and pre-measurement LOS path filtering Dec. 23, 2008
7463576 Channel estimation for OFDM communication systems Dec. 9, 2008
7457589 Circuit and method for transmitting a signal Nov. 25, 2008
7457630 Data boundary aware base station assisted position location Nov. 25, 2008
7440766 Method for employing multipath propagation in wireless radio communications Oct. 21, 2008
7433395 Reliable multicarrier communication in the presence of timing phase error Oct. 7, 2008
7433652 Electro-magnetic propagation modeling Oct. 7, 2008
7430413 Method and device for simulating a radio channel Sep. 30, 2008
7426370 Radio communication quality measuring apparatus, radio communication quality measuring method and radio base station Sep. 16, 2008
7424402 System and method for making synchronized signal measurements at spaced apart locations Sep. 9, 2008
7400896 Apparatus and method for estimating a signal power to interference power ratio in a wireless communication system Jul. 15, 2008
7398052 Method and a system for detecting communication relaying network elements Jul. 8, 2008
7398056 Channel estimation applique for multiple antenna wireless communications Jul. 8, 2008
7392018 Channel estimation applique for wireless communications Jun. 24, 2008
7363009 Method and apparatus for determining propagation delays for use in wide area networks Apr. 22, 2008
7342986 Digital PLL device Mar. 11, 2008
7321579 Method for analyzing data transmission throughput in a wireless LAN Jan. 22, 2008
7319686 Frame synchronization in multi-cell systems with a data interface Jan. 15, 2008
7315728 Polarized wave measuring apparatus, and antenna characteristic measuring apparatus and radio wave measuring apparatus using the same Jan. 1, 2008
7302267 Apparatus and method for estimating a velocity of a mobile terminal in a mobile communication system Nov. 27, 2007
7299013 Apparatus and method for correcting doppler shift in mobile communication systems Nov. 20, 2007
7299012 Circuit to add and subtract two differential signals Nov. 20, 2007
7286802 Wireless simulator Oct. 23, 2007
7269387 Method and apparatus for determining a distance between a base station and a mobile unit Sep. 11, 2007
7260168 Network measurement method and apparatus Aug. 21, 2007
7254402 GPS satellite signal acquisition assistance system and method in a wireless communications network Aug. 7, 2007
7245879 Apparatus and associated methods to perform intelligent transmit power control with subcarrier puncturing Jul. 17, 2007
7239849 Adaptive communication methods and apparatus Jul. 3, 2007
7236750 Techniques for correcting for phase and amplitude offsets in a MIMO radio device Jun. 26, 2007
7231184 Low overhead transmit channel estimation Jun. 12, 2007
7228115 Receiving method and receiver with high-precision signal estimation Jun. 5, 2007
7224942 Communications system employing non-polluting pilot codes May. 29, 2007

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