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41. 发明专利

DE60201620T2 未知
公开(公告)号：DE60201620T2
公开(公告)日：2006-03-09
申请号：DE60201620
申请日：2002-03-14
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： KIM YUNG-SOO
IPC分类号： H04L27/26 , H04L5/02
摘要： A data communication apparatus and method based on orthogonally frequency division multiple access (OFDMA) are provided. The system comprises at least one base station and several users. In the user transmitting unit an encoder encodes the user information and outputs the result of encoding as user symbols. An user signal generator generates an user signal in the time domain from the user symbol received from the encoder. A cyclic extension symbol inserter inserts a cyclic extension symbol into the user signal. A signal transmitter converts the result of insertion into a symbol block signal and transmits the symbol block signal to the base station.

42. 发明专利

DE69920339T2 未知
公开(公告)号：DE69920339T2
公开(公告)日：2005-10-06
申请号：DE69920339
申请日：1999-07-07
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： KIM YUNG-SOO
IPC分类号： H04J11/00 , H04L7/00 , H04L27/26
摘要： A method and apparatus for synchronizing an OFDM receiver is provided. The method includes the steps of: (a) receiving an OFDM reference symbol before user data OFDM symbols, the OFDM reference symbol having sub-symbol signals at only random, even-numbered sub-carriers and having no signals at any other even-numbered sub-carriers and all odd-numbered sub-carriers in the frequency domain, and the first half of the symbol having the same characteristics as the remaining half in the time domain; (b) obtaining OFDM digital signal samples rk by sampling the received OFDM reference symbol and converting the OFDM reference symbol samples into digital signals; (c) obtaining a predetermined timing metric for each of the OFDM signal samples rk according to the time-domain characteristics of the reference symbol, and detecting the point in time at which the power of the timing metric is maximum as the starting point of a symbol/frame of the OFDM signal; and (d) correcting for the offsets of sub-carrier frequencies that are less than the frequency spacing between two adjacent sub-carriers by obtaining a frequency offset from the phase of the timing metric at the detected symbol/frame starting point, and correcting for the offsets of sub-carrier frequencies that are greater than the frequency spacing between two adjacent sub-carriers by obtaining the value which maximizes the power metrics according to the frequency-domain characteristics of the reference symbol.

43. 发明专利

AU2012287609A1 Apparatus and method for beamforming in wireless communication system 未知
公开(公告)号：AU2012287609A1
公开(公告)日：2014-01-30
申请号：AU2012287609
申请日：2012-07-26
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： KIM YUNG-SOO
IPC分类号： H01Q3/26 , H04B7/04
摘要： An apparatus and a method for generating a frame for communication using beamforming in a wireless communication system are provided. A method for transmitting a signal in a transmitting stage includes determining a beam change time of a region for transmitting information in a frame, and transmitting the information to a receiving stage over the region for transmitting the information by considering the beam change time. The frame includes a plurality of regions divided based on a type of the information transmitted to the receiving stage, and the plurality of the regions includes different beam change times.

44. 发明专利

DE60335769D1 Frequenzversatzausgleich in FDM-Empfängern 未知
公开(公告)号：DE60335769D1
公开(公告)日：2011-03-03
申请号：DE60335769
申请日：2003-07-14
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： KIM YUNG-SOO , HWANG CHAN-SOO
IPC分类号： H04J1/00 , H04L5/06 , H04L5/02 , H04L27/00 , H04L27/26

45. 发明专利

DE60335332D1 Sende- und Empfangsvorrichtung zur Unterstützung von Sendeantennendiversität unter Verwendung von Raum-Zeit-Blockkodes 未知
公开(公告)号：DE60335332D1
公开(公告)日：2011-01-27
申请号：DE60335332
申请日：2003-10-09
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： HWANG CHAN-SOO , TAROKH VAHID , NAM SEUNG-HOON , KIM YUNG-SOO , CHUNG JAE-HAK
IPC分类号： H04B7/02 , H04B7/06 , H04B7/08 , H04L1/06

46. 发明专利

DE60318291T2 未知
公开(公告)号：DE60318291T2
公开(公告)日：2009-10-01
申请号：DE60318291
申请日：2003-09-29
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： TAROKH VAHID , KIM YUNG-SOO , CHUNG JAE-HAK , HWANG CHAN-SOO
IPC分类号： H04L1/06 , H04B7/02 , H04B7/06 , H04J99/00 , H04L1/00
摘要： According to one aspect of the present invention, there is provided a signal transmission apparatus for a mobile communication system. In the signal transmission apparatus, a frame segmentation section segments an input frame into Bk bit group, where k = 1,..., K. A first group of encoders encodes Bk bit group and outputs encoded symbols. A second group of encoders encodes other Bk, bit group and output other encoded symbols. Each encoded symbol is encoded again to the transmit antennas using different functions. A transmission section includes a plurality of antennas in groups of a predetermined number of antennas, and the total number N of antennas is larger than the sum of the number of antenna groups. The transmission antennas transmit symbols encoded by one of the encoders.

47. 发明专利

DE19917357B4 未知
公开(公告)号：DE19917357B4
公开(公告)日：2009-04-09
申请号：DE19917357
申请日：1999-04-16
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： KIM YUNG-SOO
IPC分类号： H04L25/03 , G11B5/012 , G11B5/09 , G11B20/10 , G11B20/14 , H03M1/08 , H03M1/12 , H04L7/02
摘要： A non-linear signal receiver. The non-linear signal receiver for detecting an original data ak from an input signal r(t) which is a binary data stream input through a channel or reproduced from data recorded on a storing device includes: an analog-to-digital converter (ADC) for sampling the input value according to sampling timing phases, and converting the sampled data into a digital signal rk; a modeling portion including 2N+1 taps Pn (n=-N, . . . , 0, . . . , N) each for selecting one of 2&tgr;+&ngr; tap values according to each pattern pn (bk-n+&ngr;:k-n+1, bk-n-1:k-n-&tgr;) of absolute values of the data transitions future &ngr; bits and past &tgr; bits, for estimating the channel characteristics of the sampled signal from the selected tap value and the data transition value; a timing recovery portion for controlling the sampling timing phase of the analog-to-digital converter using a phase gradient equal to p1(0)-p-1(0), which is the difference between values of respective taps positioned symmetrically around the tap P0 of the modeling portion; an equalizer for compensating for the deteriorated characteristics of the output value of the analog-to-digital converter; and a detector for converting the output of the equalizer to a digital value, to detect the original signal. Therefore, an accurate timing phase can be found using a model in which a non-linear channel of a high-density digital magnetic storing device is expressed by transition pulses selected according to the future &ngr; bits and the past &tgr; bits, thereby reducing timing jitter and bias.

48. 发明专利

DE602004011294T2 未知
公开(公告)号：DE602004011294T2
公开(公告)日：2009-01-22
申请号：DE602004011294
申请日：2004-07-08
申请人： SAMSUNG ELECTRONICS CO LTD , POSTECH FOUNDATION POHANG
发明人： LEE JONG-HYEUK , KIM YUNG-SOO , IM GI-HONG , WON HUI-CHUL , PARK CHEOL-JIN
IPC分类号： H04J11/00 , H04L25/02 , H04B7/06 , H04L1/06 , H04L27/26
摘要： In a mobile communication system, a transmitter includes a first transmission antenna and a second transmission antenna, and the first and second transmission antennas transmit signals through at least one odd carrier and at least one even carrier. The transmitter determines a first symbol and a second symbol to be used for initial channel estimation of a receiver, encodes the first symbol and the second symbol by a preset transmit diversity scheme for a preset time, and transmits the encoded first and second symbols to the receiver through odd carriers and even carriers of the first transmission antenna and the second transmission antenna. The receiver receives a signal for the preset period, estimates channel frequency responses of odd carriers of the first transmission antenna and channel frequency responses of even carriers of the second transmission antenna, and estimates channel frequency responses of even carriers of the first transmission antenna and channel frequency responses of odd carriers of the second transmission antenna by using the estimated channel frequency responses.

49. 发明专利

DE602004009853D1 未知
公开(公告)号：DE602004009853D1
公开(公告)日：2007-12-20
申请号：DE602004009853
申请日：2004-04-22
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： HWANG CHAN-SOO , NAM SEUNG , CHUNG JAE-HAK , KIM YUNG-SOO
IPC分类号： H04B7/02 , H04L1/06
摘要： The normalized symbols is generated by multiplying the received block symbols by symbol blocks transmitted at previous time and then dividing the result by normalization value so as to determine size of previous symbol block. The normalized symbols are transmitted once at each antenna for each time period. The symbol combinations are transmitted through the antennas for corresponding time period. Independent claims are also included for the following: (1) method for receiving symbols encoded using differential space-time block code; (2) transmitter for encoding symbols; and (3) receiver for receiving encoded symbols.

50. 发明专利

NL1003355C2 未知
公开(公告)号：NL1003355C2
公开(公告)日：1999-01-19
申请号：NL1003355
申请日：1996-06-17
申请人： SAMSUNG ELECTRONICS CO LTD
发明人： KIM YUNG-SOO
IPC分类号： G11B20/14 , G11B20/10 , G11B20/22 , H03H21/00 , H03M5/14 , H03M7/14 , H04L25/497
摘要： Data detection method and apparatus in a data storage device are provided. The data detection apparatus includes: a Random Access Memory (RAM) updating device for obtaining the average characteristic of the equalization signal zk from the symbol data +E,cir a+EE k and storing and updating the obtained result; threshold value calculator for calculating an optimal threshold value with respect to each data pattern from the average characteristic of the equalization signal zk updated in the RAM updating device; and a detector for detecting the value of the symbol data +E,cir a+EE k by comparing the equalization signal zk with the threshold value calculated in the threshold value calculator. Thus, a signal is detected by obtaining an average characteristic of a signal according to a data pattern and then using an optimal threshold value to detect the signal so that a signal having considerable non-linear distortion and a Direct Current (DC) offset can be reliably detected.

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