ClassID:

225675

H04L25/0222 - page 2 - CPC Classification

Classification description:

Baseband systems; Details ; arrangements for supplying electrical power along data transmission lines; Channel estimation Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency

Recent Application in this class:
#301
20100311350
2010-12-09

Continuous sequential scatterer estimation

#302
20100303177
2010-12-02

Doppler frequency estimation system and method

#303
20100284266
2010-11-11

ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM AND METHOD FOR INTER-CELL INTERFERENCE CANCELLATION OF THE ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SYSTEM

#304
20100272198
2010-10-28

Method of detecting transmission channel and related wireless communication system

#305
20100246720
2010-09-30

Channel variation detection of wireless channel for adaptive transmission schemes

#306
20100240409
2010-09-23

WIRELESS COMMUNICATION SYSTEM, WIRELESS BASE STATION, WIRELESS TERMINAL STATION, AND TRANSMISSION POWER CONTROL METHOD USING THE SAME

#307
20100227561
2010-09-09

Method and system for reducing feedback information in multicarrier-based communication systems based on temporal correlation

#308
20100226452
2010-09-09

Method and system for reducing feedback information in multicarrier-based communication systems based on frequency grouping

#309
20100226269
2010-09-09

Method and system for reducing feedback information in multicarrier-based communication systems based on tiers

#310
20100220800
2010-09-02

Signaling of dedicated reference signal (DRS) precoding granularity

#311
20100202301
2010-08-12

METHOD FOR SWITCHING BETWEEN A LONG GUARD INTERVAL AND A SHORT GUARD INTERVAL AND MODULE USING THE SAME

#312
20100197242
2010-08-05

Techniques for explicit feedback delay measurement

#313
20100183064
2010-07-22

Method and apparatus for generating channel quality information for wireless communication

#314
20100150007
2010-06-17

METHOD FOR TRANSMITTING AND RECEIVING CHANNEL QUALITY INFORMAITON IN MULTI CARRIER WIRELESS SYSTEM

#315
20100085865
2010-04-08

Method and an apparatus for estimating a delay spread of a multipath channel

#316
20100061473
2010-03-11

Method and apparatus for selecting modulation and coding scheme (MCS) index based on frequency selectivity

#317
20100054144
2010-03-04

Method and apparatus for selecting modulation and coding scheme (MCS) index based on frequency selectivity

#318
20100008321
2010-01-14

Base-station apparatus, mobile machine, communication system, and channel allocation method

#319
20100002597
2010-01-07

Feedback to support restrictive reuse

#320
20090296861
2009-12-03

System and method for multiple signal carrier time domain channel estimation

#321
20090274199
2009-11-05

Adaptive modulation control apparatus and wireless communication apparatus

#322
20090257515
2009-10-15

Transmission method of wireless signal and transmitter using the same

#323
20090238208
2009-09-24

Wireless communication apparatus

#324
20090225913
2009-09-10

Inter-carrier interference removal device and reception device using the same

#325
20090225687
2009-09-10

Estimation of Eigen coherence bandwidth

#326
20090213920
2009-08-27

Method and apparatus for detecting high-mobility state of mobile terminal and related device

#327
20090207956
2009-08-20

Receiver, integrated circuit, and reception method

#328
20090196216
2009-08-06

Wireless communication device

#329
20090180559
2009-07-16

Wireless transmission system, receiver thereof, and method for removing inter-carrier interference thereof

#330
20090161733
2009-06-25

Radio communication system, transmitter, receiver and radio communicating method

#331
20090154577
2009-06-18

Determination of pre-coding matrix indicators for spatial multiplexing in a mobile communications system

#332
20090154547
2009-06-18

Scattered pilot correlation in DVB-H systems

#333
20090154530
2009-06-18

MIMO/transmit diversity channel estimation

#334
20090135963
2009-05-28

Apparatus and method for adaptive receive signal decoding based on channel variation in communication system

#335
20090124210
2009-05-14

RADIO TRANSMITTING APPARATUS, RADIO RECEIVING APPARATUS, WIRELESS COMMUNICATION METHOD, AND WIRELESS COMMUNICATION SYSTEM

#336
20090110048
2009-04-30

Radio receiver in a wireless communications system

#337
20090110044
2009-04-30

Method and Apparatus for Deciding a Channel Impulse Response

#338
20090088174
2009-04-02

WIRELESS COMMUNICATION APPARATUS AND METHOD FOR CONTROLLING WIRELESS COMMUNICATION APPARATUS

#339
20090080548
2009-03-26

OFDM demodulation device

#340
20090052518
2009-02-26

Mobile radio communication device and channel estimate calculation method

#341
20090042530
2009-02-12

Pilot-based two-dimensional channel estimation

#342
20090041096
2009-02-12

EFFICIENT SYNCHRONIZATION OF A SPREAD SPECTRUM SIGNAL IN THE PRESENCE OF DELAY AND FREQUENCY UNCERTAINTY

#343
20090031183
2009-01-29

Retransmission control scheme and wireless communication apparatus

#344
20090028102
2009-01-29

Resource assignment method for communication system adapted for change of channel

#345
20090016455
2009-01-15

Robust channel estimation for wireless systems

#346
20080268785
2008-10-30

UE-autonomous CFI reporting

#347
20080260081
2008-10-23

Real-time channel estimation system

#348
20080240260
2008-10-02

Adaptive channel prediction system and method

#349
20080225936
2008-09-18

Frequency domain equalization for time varying channels

#350
20080192853
2008-08-14

Method and system for rate reduction pre-coding matrices

#351
20080192852
2008-08-14

METHOD AND SYSTEM FOR AN ALTERNATING CHANNEL DELTA QUANTIZER FOR 2X2 MIMO PRE-CODERS WITH FINITE RATE CHANNEL STATE INFORMATION FEEDBACK

#352
20080165839
2008-07-10

Method and system for dynamic adaptation and communicating differences in frequency—time dependent systems

#353
20080159458
2008-07-03

Apparatus and method for adaptive wireless channel estimation

#354
20080137788
2008-06-12

Apparatus and method of estimating channel based on channel delay spread in mobile communication system

#355
20080101498
2008-05-01

Method and apparatus for transmitting/receiving feedback information in a wireless packet data communication system

#356
20080101303
2008-05-01

HIGH SPEED SHARED CONTROL CHANNEL (HS-SCCH) COMMUNICATION APPARATUS AND METHOD IN WIDEBAND CODE DIVISION MULTIPLE ACCESS (WCDMA) COMMUNICATION SYSTEM

#357
20080095185
2008-04-24

Method and apparatus for sending a channel quality indication via a shared channel

#358
20080075186
2008-03-27

OFDM receiver and OFDM signal receiving method

#359
20080075182
2008-03-27

Adaptive channel estimator and adaptive channel estimation method

#360
20080056390
2008-03-06

METHOD AND SYSTEM FOR DOPPLER ESTIMATION

#361
20080045238
2008-02-21

Communication Systems

#362
20070275665
2007-11-29

Method and apparatus for generating channel quality information for wireless communication

#363
20070263752
2007-11-15

Delay-doppler channel response demodulation method and apparatus

#364
20070201566
2007-08-30

Techniques for explicit feedback delay measurement

#365
20070189260
2007-08-16

METHOD AND APPARATUS FOR DETECTING CHANNEL TYPES AND METHOD OF EMPLOYING SAME

#366
20070183519
2007-08-09

Method for channel estimation in orthogonal frequency division multiplexing system and device thereof

#367
20070171808
2007-07-26

Adaptive orthogonal scheduling for virtual MIMO system

#368
20070153931
2007-07-05

Apparatus and method for determining pilot pattern in a broadband wireless access communication system

#369
20070153714
2007-07-05

Device, system and method of securing wireless communication

#370
20070036231
2007-02-15

Demodulation device and demodulation method

#371
20060269016
2006-11-30

Adaptive interpolator for channel estimation

#372
20060250935
2006-11-09

Radio communication system and radio communication method

#373
20060209732
2006-09-21

Pilot signal transmission for an orthogonal frequency division wireless communication system

#374
20060188034
2006-08-24

System and method for multiple signal carrier time domain channel estimation

#375
20060135169
2006-06-22

Feedback to support restrictive reuse

#376
20060133542
2006-06-22

Methods and apparatus for decoder selection in communication systems

#377
20060133457
2006-06-22

Channel estimator with extended channel bandwidth

#378
20060104376
2006-05-18

OFDM signal receiver and receiving method

#379
20060088133
2006-04-27

Time-frequency correlation-based synchronization for coherent OFDM receiver

#380
20060083295
2006-04-20

Throughput maximization in wireless communication systems

#381
20060079184
2006-04-13

Channel estimator, demodulator, speed estimator and method thereof

#382
20060077886
2006-04-13

Transmission apparatus and method for a base station using block coding and cyclic delay diversity techniques in an OFDM mobile communication system

#383
20060072692
2006-04-06

Communication channel tracking apparatus

#384
20060007990
2006-01-12

Method and apparatus for scaling parameter estimation in parametric generalized rake receivers

#385
20060007904
2006-01-12

Apparatus and method for fading frequency estimation

#386
20050289256
2005-12-29

Method and apparatus for channel quality feedback within a communication system

#387
20050227654
2005-10-13

Method of communication channel estimation and information receiving terminal using the same

#388
20050213680
2005-09-29

Receiver for recovering data from an OFDM symbol

#389
20050213679
2005-09-29

Receiver

#390
20050186963
2005-08-25

Hybrid open/closed loop filtering for link quality estimation

#391
20050174929
2005-08-11

Reception apparatus and method, and channel response measurement apparatus for receiving an orthogonal frequency divisional multiplexing signal

#392
20050163193
2005-07-28

Radio communication system, transmitter, receiver and radio communicating method

#393
20050129143
2005-06-16

Channel equalizing device and method of digital broadcasting receiving system

#394
20050105647
2005-05-19

Channel estimation by adaptive interpolation

#395
20050008103
2005-01-13

Communication system and method using signal to noise ratio estimation for scaling in processing received wireless communication signals

#396
18785544
2025-11-11

Expedited training for fast linkup

#397
17706026
2023-04-18

Multiplexing demodulation reference signal and data in orthogonal time frequency space waveform

#398
17685602
2026-05-12

Techniques to perform channel estimation

#399
17317730
2024-01-02

Subcarrier pre-equalization technology for frequency selective fading characteristics of wireless channels

#400
16723302
2020-12-01

Low-complexity doppler estimator

#401
16438527
2020-08-11

Real time analog front end response estimation for sensing applications

#402
16413109
2019-09-03

Determining motion zones in a space traversed by wireless signals

#403
16353980
2020-06-23

Symbol rate determination method and measurement instrument

#404
15929191
2020-08-18

ADC-based SerDes with sub-sampled ADC for eye monitoring

#405
15143075
2019-01-15

WiFi classification by pilot sequences