公开(公告)号：KR100513024B1

公开(公告)日：2005-09-05

申请号：KR1020020081695

申请日：2002-12-20

Applicant: 삼성전자주식회사

Inventor： 이경하

IPC: H04B1/7115

Abstract: 본 발명은 이동통신 시스템에서 레이크 수신기의 임계값을 설정하는 장치 및 방법에 관한 것이다. 다중 경로를 통해 수신된 신호를 복조하는 레이크 수신기에서 다중 경로에 할당된 복조기들이 다중 경로의 신호들을 수신하여 복조하면, 신호세기 측정기들은 상기 다중 경로의 신호들에 대해 신호세기들을 측정하고 비교기들은 상기 측정된 신호세기들을, 기준 임계값을 포함하는 미리 설정된 복수의 임계값들과 각각 비교한다. 그러면 임계값 결정기는 상기 기준 임계값 이상의 신호세기를 가지는 경로들의 개수가 미리 정해지는 소정 개수 이상이면 상기 미리 설정된 복수의 임계값들 중 최대의 임계값을 선택하며, 심볼 결합기는 상기 선택된 임계값 이상의 신호세기를 가지는 경로들의 복조기들로부터 출력되는 복조 신호들을 결합한다. 이로써 본 발명은 레이크 수신기의 수신성능을 향상시킨다.

公开(公告)号：KR1020050010550A

公开(公告)日：2005-01-28

申请号：KR1020030049756

申请日：2003-07-21

Applicant: 삼성전자주식회사

Inventor： 나경원 ,  이경하

IPC: H04B1/40

CPC classification number: H04M1/72522

Abstract: PURPOSE: An apparatus and a method for processing audio signals in the case of executing a voice call in a mobile terminal which can receive DMB(Digital Multimedia Broadcasting) signals are provided to execute a voice call without being disturbed by broadcast signals in case that a user executes a voice call while watching a digital multimedia broadcast. CONSTITUTION: A control part judges whether an incoming call is generated(211). If an incoming call is generated, the control part informs the user of it according to a preset mode(213). Then the control part judges whether the SEND key is inputted(215). If the SEND key is inputted, the control part judges that a voice call request has been made by the user. Then the control part judges whether a digital multimedia broadcast is being received(219). If it is judged that a digital multimedia broadcast is being received, the control part controls a decoding part so as not to decode the audio signals outputted from a demultiplexer(221). After controlling the decoding part, the control part connects a voice call(223). Afterwards the control part judges whether the voice call comes to an end(223). If the voice call is completed, the control part controls the decoding part so as to resume the decoding of audio signals(227).

Abstract translation: 目的：提供一种用于在可以接收DMB（数字多媒体广播）信号的移动终端中执行语音呼叫的情况下处理音频信号的装置和方法，以在不受广播信号干扰的情况下执行语音呼叫， 用户在观看数字多媒体广播时执行语音呼叫。 规定：控制部分判断是否产生来电（211）。 如果产生了来电，则控制部分根据预设模式通知用户它（213）。 然后控制部分判断是否输入SEND键（215）。 如果输入SEND键，则控制部分判断用户已经进行了语音呼叫请求。 然后，控制部分判断是否正在接收数字多媒体广播（219）。 如果判断正在接收数字多媒体广播，则控制部分控制解码部分，以便不对从解复用器（221）输出的音频信号进行解码。 在控制解码部分之后，控制部分连接语音呼叫（223）。 此后，控制部分判断语音呼叫是否结束（223）。 如果语音呼叫完成，则控制部分控制解码部分，以恢复音频信号的解码（227）。

公开(公告)号：KR1020040072107A

公开(公告)日：2004-08-18

申请号：KR1020030008041

申请日：2003-02-08

Applicant: 삼성전자주식회사

Inventor： 류동렬 ,  이경하

IPC: H04B1/7077

Abstract: PURPOSE: A method for seizing a spreading code of a direct sequence spread spectrum system, and an apparatus thereof are provided to realize PN code seizure without being affected by data modulation, and realize balance to PN code correlation values in comparing the PN code correlation values for assigning a path. CONSTITUTION: Received signals are inputted to a despreader(30). A PN(pseudo noise) code generator(32) generates a PN code formed of a plurality of chips. The despreader(30) despreads the received signals with the PN code. An accumulator(36) accumulates the despreaded signals for a predetermined symbol interval after a correlation start command is inputted by a controller(38). A correlator(40) measures correlation energy to the accumulated symbols. The controller(38) judges success of PN code seizure according to the measured correlation energy, and decides whether demodulation is to be executed. An identifying unit(34) identifies a pilot symbol interval and a modulation data interval by the PN code generated from the PN code generator(32). The identifying unit(34) seizes a start point of a pilot symbol, and counts the number of chips generated from the PN code generator(32) for outputting an identifier. The controller(38) identifies the pilot symbol interval and the modulation data interval according to the inputted identifier, and decides whether the correlation is to be executed for only symbol interval or for both symbol interval and the modulation data interval.

Abstract translation: 目的：提供一种直接序列扩频系统的扩展码占用的方法及其装置，用于在不受数据调制影响的情况下实现PN码发送，并在PN码相关值比较中实现PN码相关值的平衡 用于分配路径。 构成：接收信号被输入到解扩器（30）。 PN（伪噪声）码发生器（32）产生由多个码片形成的PN码。 解扩器（30）用PN码对接收到的信号进行解扩。 累加器（36）在通过控制器（38）输入相关开始命令之后，以预定的符号间隔累积解扩信号。 相关器（40）测量与累加符号的相关能量。 控制器（38）根据所测量的相关能量来判断PN码卡死的成功，并决定是否执行解调。 识别单元（34）通过从PN码发生器（32）产生的PN码识别导频符号间隔和调制数据间隔。 识别单元（34）占用导频符号的起始点，并且对从PN码发生器（32）生成的用于输出标识符的码片数进行计数。 控制器（38）根据输入的标识符识别导频符号间隔和调制数据间隔，并且判断是否仅对符号间隔执行相关或者对于符号间隔和调制数据间隔两者执行相关性。

公开(公告)号：KR1020040055094A

公开(公告)日：2004-06-26

申请号：KR1020020081695

申请日：2002-12-20

Applicant: 삼성전자주식회사

Inventor： 이경하

IPC: H04B1/7115

Abstract: PURPOSE: An apparatus and a method for determining a threshold value of a rake receiver are provided to exclude a signal of a path having a receive signal strength not greater than a certain threshold value from symbol combination. CONSTITUTION: Demodulators(210a-210c) demodulate multiple receive signals each with different time delay through different radio paths, respectively. A symbol combiner(220) combines outputs of the demodulators(210a-210c) according to typical MRC(Maximal Ratio Combining). A threshold value determining unit(230) compares the outputs of the demodulators(210a-210c) with a reference threshold value, one of pre-set multiple threshold values, and selects one of the pre-set multiple threshold values according to the number of paths having signal strength not smaller than the reference threshold value.

Abstract translation: 目的：提供一种用于确定耙式接收机的阈值的装置和方法，以从符号组合排除具有不大于特定阈值的接收信号强度的路径的信号。 构成：解调器（210a-210c）分别通过不同的无线电路径解调具有不同时间延迟的多个接收信号。 符号组合器（220）根据典型的MRC（最大比率组合）组合解调器（210a-210c）的输出。 阈值确定单元（230）将解调器（210a-210c）的输出与参考阈值（预置的多个阈值中的一个）进行比较，并且根据预设的多个阈值的数量选择预定的多个阈值中的一个 具有不小于参考阈值的信号强度的路径。

公开(公告)号：KR1020020068761A

公开(公告)日：2002-08-28

申请号：KR1020010009020

申请日：2001-02-22

Applicant: 삼성전자주식회사

Inventor： 이경하

IPC: H04B1/7085

CPC classification number: H04B1/7085

Abstract: PURPOSE: A spreading code tracer having an adaptive variable correlation length is provided to always maintain an optimum trace performance as to channel environment changed according to time by extending a correlation length, decreasing a bandwidth, and minimizing a timing jitter by an interference component in case that the timing trace succeeds previously. CONSTITUTION: A loop filter(105) filters a timing error. A channel estimator(220) calculates the polarity of the output of the loop filter(105) and an absolute value of the polarity, compares the polarity and the absolute value with specific threshold values during predetermined time, and judges current channel situation and trace situation. A correlation length/bandwidth adjuster(210) changes the correlation length and the bandwidth of the loop filter(105) according to the judged result of the channel estimator(220).

Abstract translation: 目的：提供具有自适应可变相关长度的扩展码跟踪器，以通过扩展相关长度，减小带宽以及通过干扰分量使定时抖动最小化来保持随时间变化的信道环境的最佳跟踪性能 定时跟踪以前成功。 构成：环路滤波器（105）对定时误差进行滤波。 信道估计器（220）计算环路滤波器（105）的输出的极性和极性的绝对值，在预定时间内将极性和绝对值与特定阈值进行比较，并且判断当前信道状况和跟踪情况 。 相关长度/带宽调整器（210）根据信道估计器（220）的判断结果改变环路滤波器（105）的相关长度和带宽。

公开(公告)号：KR1020020001660A

公开(公告)日：2002-01-09

申请号：KR1020010037798

申请日：2001-06-28

Applicant: 삼성전자주식회사

Inventor： 이경하 ,  김영진 ,  김성주

IPC: H04B1/16

Abstract: PURPOSE: A digital FM receiver for demodulating an FM digital data frame in a mobile communication system is provided to restore message word signals from digital data frames without a loss by accurately detecting as to whether digital data frames are received or no and an ending time point thereof when the digital data frames are continuously received from a transmitter. CONSTITUTION: A processor(610) controls a switch(613) to be short whenever a symbol is synchronized and restored in a symbol synchronous circuit(602). When the switch(613) becomes short, the processor controls a switch(611) to be short to detect a dotting sequence signal. When a doting detector(602) receives symbols related to a dotting sequence signal as the switch(611) becomes short, the dotting detector(602) accumulates the inputted symbols as many as the certain number. If the dotting detector(602) detects a dotting sequence signal, the processor(610) controls the switch(611) to be short to a terminal(615). A long dotting detector(603) accumulates the inputted symbols as many as the certain number when the switch(611) is short to the terminal(615) and symbols are inputted. If the accumulated 42 symbols has a pattern that '1' and '0' are repeated, the long dotting detector(603) discriminates that the symbol pattern is a long dotting sequence signal and informs the processor of it. The processor(610) receives the information and restores a signal from message word signals stored until the time point in a message word accumulator(607). When the dotting detector(602) detects the dotting sequence signal, the frame termination counter(604) is set as a predetermined counter value. Whenever the switch(611) is connected to the terminal(615) and symbols are inputted to the frame termination counter(604), the frame termination counter(604) reduced by 1 from the predetermined value. If the frame termination counter(604) reaches '0', the frame termination counter(604) determines that the digital data frames are completely received and informs the processor(610) of the result.

Abstract translation: 目的：提供一种用于在移动通信系统中解调FM数字数据帧的数字FM接收机，用于通过准确地检测数字数据帧是否被接收到，还有一个结束时间点，从而从数字数据帧中恢复消息字信号而没有损失 当从发送器连续接收数字数据帧时。 构成：当符号同步并在符号同步电路（602）中恢复时，处理器（610）控制开关（613）短。 当开关（613）变短时，处理器控制开关（611）短，以检测点号序列信号。 当发光检测器（602）随着开关（611）变短时，接收到与点号序列信号相关的符号时，点检测器（602）将所输入的符号累加到一定数量。 如果点号检测器（602）检测到点号序列信号，则处理器（610）控制开关（611）对端子（615）短。 当开关（611）与端子（615）相比较短时，长点检测器（603）累积输入的符号多达一定数量，符号被输入。 如果积累的42个符号具有重复“1”和“0”的图案，则长点检测器（603）识别符号图案是长点序列信号，并将其通知给处理器。 处理器（610）接收信息并从存储的消息字信号中恢复信号，直到消息字累加器（607）中的时间点为止。 当点号检测器（602）检测到点号序列信号时，帧终止计数器（604）被设置为预定的计数器值。 每当开关（611）连接到终端（615）并且符号被输入到帧终止计数器（604）时，帧终止计数器（604）从预定值减1。 如果帧终止计数器（604）达到“0”，则帧终止计数器（604）确定数字数据帧被完全接收并通知处理器（610）结果。

公开(公告)号：KR1020010111245A

公开(公告)日：2001-12-17

申请号：KR1020000031817

申请日：2000-06-09

Applicant: 삼성전자주식회사

Inventor： 조희선 ,  이경하 ,  박성복

IPC: H04B1/46

CPC classification number: G10L19/18 ,  G10L15/26 ,  H04M1/271 ,  H04M1/656 ,  H04M1/72519 ,  H04M2250/74

Abstract: 본 발명은 디지털 및 아날로그모드를 모두 구현하는 이중모드 무선이동 통신기기에 있어서, 상기 무선이동 통신기기가 아날로그모드로 동작중에도 화자의 음성인식과 저장된 정보의 음성출력을 포함하는 음성기능 수행이 가능한 방법을 제공함에 있다. 이를 위해 제어부가 상기 음성신호 인식기능 및 출력기능을 요구하는 명령의 입력여부를 판별하는 과정과, 상기 명령이 입력되면, 보코더를 음성기능수행이 가능하도록 디지털모드로 전환하는 과정과, 상기 디지털모드에서 상기 음성신호 인식기능 및 출력기능을 수행하는 상기 과정으로 이루어져 있다.

公开(公告)号：KR1020010059522A

公开(公告)日：2001-07-06

申请号：KR1019990067039

申请日：1999-12-30

Applicant: 삼성전자주식회사

Inventor： 이경하 ,  박성복

IPC: H04B7/26

CPC classification number: H04W36/0083

Abstract: PURPOSE: An apparatus and a method for performing a hand-off from an asynchronous mobile communication system to a synchronous mobile communication system, are provided to obtain and keep timing information of a synchronous base station in advance before a terminal receives search and hand-off operations of a neighbor MC(Multi-Carrier). CONSTITUTION: Information of a neighbor cell is received(501). If there is a neighbor synchronous base station(503), it is checked whether a mobile station is synchronized with the MC(507). It is determined whether a current sleep cycle is longer than a pilot signal obtain time(T1)(509). A time period for obtaining a pilot channel is requested to a base station(511). If this request is accepted, the pilot signal is received(517). It is determined whether the current sleep cycle is longer than a synchronous channel demodulation time(T2)(521). If the current sleep cycle is longer than the synchronous channel demodulation time(T2), a current mode is switched to a synchronous mode during a sleep time period, and then a time period for demodulating a synchronous channel is asked to the base station(531).

Abstract translation: 目的：提供一种用于从异步移动通信系统向同步移动通信系统进行越区切换的装置和方法，用于在终端接收到搜索和切换之前事先获得和保持同步基站的定时信息 邻居MC（多载波）的操作。 构成：接收相邻小区的信息（501）。 如果存在邻居同步基站（503），则检查移动站是否与MC同步（507）。 确定当前睡眠周期是否长于导频信号获得时间（T1）（509）。 向基站（511）请求获取导频信道的时间周期。 如果接受该请求，则接收导频信号（517）。 确定当前的睡眠周期是否比同步信道解调时间（T2）长（521）。 如果当前睡眠周期长于同步信道解调时间（T2），则在休眠时间段期间将当前模式切换到同步模式，然后向基站（531）询问解调同步信道的时间段 ）。

公开(公告)号：KR1020010028203A

公开(公告)日：2001-04-06

申请号：KR1019990040312

申请日：1999-09-18

Applicant: 삼성전자주식회사

Inventor： 이경하 ,  문희찬

IPC: H04B7/26

CPC classification number: H04W36/0061 ,  H04J13/0048 ,  H04J13/18 ,  H04W36/0066 ,  H04W36/18 ,  H04W36/30 ,  H04W48/08

Abstract: PURPOSE: The apparatus for performing handoff is provided to make a synchronous system base station transmit a 'PN_OFFSET' value through the first short synchronization channel, and to obtain information on peripheral cells in a shortest time, so as to reduce call cutoff times between the synchronous mobile communication system and a mobile station. CONSTITUTION: A forward pilot channel generator(103) generates a pilot signal. A forward synchronous channel generator(104) generates a synchronous signal. The first forward auxiliary synchronous channel generator(105) generates 'PN_OFFSET' information of a base station. The second forward auxiliary synchronous channel generator(106) generates a long code state signal of the base station and frame timing information. A forward DCCH(Dedicated Control Channel) generator(102) generates a control message of a DCCH. A forward dedicated fundamental channel generator(108) generates a voice signal. A forward dedicated supplementary channel generator(109) generates packet data.

Abstract translation: 目的：提供用于执行切换的设备，以使同步系统基站通过第一短同步信道发送“PN_OFFSET”值，并且在最短时间内获得关于外围小区的信息，以便减少在第 同步移动通信系统和移动台。 构成：前向导频信道发生器（103）产生导频信号。 正向同步信道发生器（104）产生同步信号。 第一正向辅助同步信道发生器（105）生成基站的“PN_OFFSET”信息。 第二前向辅助同步信道发生器（106）产生基站的长码状态信号和帧定时信息。 正向DCCH（专用控制信道）发生器（102）产生DCCH的控制消息。 前向专用基本信道发生器（108）产生语音信号。 前向专用辅助信道发生器（109）生成分组数据。

公开(公告)号：KR100212065B1

公开(公告)日：1999-08-02

申请号：KR1019970027069

申请日：1997-06-25

Applicant: 삼성전자주식회사

Inventor： 김민구 ,  김덕환 ,  이경하 ,  전영희 ,  최형진

IPC: H03D3/00

Abstract: 인테그레잇 앤 덤프부를 구비한 에이엠피에스시스템의 에프엠 디지털 데이터 복조를 위한 심볼동기회로에 있어서, 소정의 보간값에 따라 고정 샘플된 신호 사이의 심볼중앙 천이지점을 추적하여 추적신호를 출력하는 선형보간부와, 상기 추적신호에 대한 타이밍을 검출하는 타이밍검출부와, 검출된 타이밍신호를 루프필터링하는 루프필터와, 상기 선형보간기에 다음 샘플간의 보간지점을 지정하는 보간값을 제공하며, 상기 인테그레잇 앤 덤프부에 심볼간의 변화지점값 및 각 샘플에 대한 맨체스터 디코딩을 위하여 심볼의 반주기 동안은 +값을 가지고 나머지 반주기 동안은 -값을 가지는 파형을 제공하는 발진기로 구성됨을 특징으로 한다.