公开(公告)号：US5258995A

公开(公告)日：1993-11-02

申请号：US789292

申请日：1991-11-08

申请人： Chun-Meng Su ,  Saman Behtash ,  Keith Jarett ,  Huihung Lu ,  Christopher Flores ,  David G. Messerschmitt

发明人： Chun-Meng Su ,  Saman Behtash ,  Keith Jarett ,  Huihung Lu ,  Christopher Flores ,  David G. Messerschmitt

IPC分类号： H03M5/14 ,  H03M13/31 ,  H04J1/12 ,  H04J3/06 ,  H04J13/16 ,  H04L25/49 ,  H04M1/725 ,  H04K1/00

CPC分类号： H04J1/12 ,  H03M13/31 ,  H03M5/145 ,  H04J3/0605 ,  H04L25/4908 ,  H04M1/72502 ,  H04J13/16

摘要： In the present invention a wireless communication system is disclosed. A base unit communicates with a remote unit. The system comprises means for transmitting, using CDMA, between the base unit and the remote unit, in one of a plurality of frequencies channels selected. In one period of time, the base unit transmits and in another period of time, different from the one period, the remote unit transmits. Further, the system comprises means for changing the one frequency channel selected to another frequency channel, different from the one frequency channel, in response to interference in the one frequency channel. Thus, communication between the base unit and the remote unit is then affected over the another frequency channel.

摘要翻译： 在本发明中，公开了一种无线通信系统。 基本单元与远程单元通信。 该系统包括用于在所选择的多个频率信道之一中使用CDMA在基本单元和远程单元之间进行发送的装置。 在一个时间段内，基站单元在远程单元发送的另一个时间段内发送不同于一个周期的时间段。 此外，该系统包括用于响应于一个频率信道中的干扰而将选择的一个频率信道改变为与一个频率信道不同的另一频率信道的装置。 因此，基本单元和远程单元之间的通信然后在另一频率信道上受到影响。

公开(公告)号：US5278992A

公开(公告)日：1994-01-11

申请号：US790634

申请日：1991-11-08

申请人： Chun-Meng Su ,  Saman Behtash

发明人： Chun-Meng Su ,  Saman Behtash

IPC分类号： H03M5/14 ,  H03M13/31 ,  H04L25/49 ,  H04M1/725 ,  H04B7/26

CPC分类号： H04M1/72502 ,  H03M13/31 ,  H03M5/145 ,  H04L25/4908

摘要： In the present invention, the power of a remote transmitted signal is controlled, by a remote communication device. The remote communication device is in communication with the base communication device. The base communication device transmits to the remote device a base transmitted signal. The base transmitted signal is received by the remote device and its power is measured. The transmission power of the remote transmitted signal is controlled in accordance withPower=A+(B-C)where A is representative of the desired power of the remote transmitted signal received by the base device; B is representative of the power of the base transmitted signal, transmitted by the base device; and C is representative of the measured power of the base transmitted signal as received by the remote device.

摘要翻译： 在本发明中，通过远程通信装置控制远程发送信号的功率。 远程通信设备与基站通信设备通信。 基站通信装置向远程装置发送基站发送的信号。 基站发送的信号由远程设备接收并测量其功率。 远程发送信号的发送功率根据功率= A +（B-C）进行控制，其中A表示基本设备接收的远程发送信号的期望功率; B代表由基本设备传输的基站发射信号的功率; C表示由远程设备接收的基本发射信号的测量功率。

公开(公告)号：US5247702A

公开(公告)日：1993-09-21

申请号：US789737

申请日：1991-11-08

申请人： Chun-Meng Su ,  Saman Behtash ,  Keith Jarett

发明人： Chun-Meng Su ,  Saman Behtash ,  Keith Jarett

IPC分类号： H03M5/14 ,  H03M13/31 ,  H04L25/49 ,  H04M1/725

CPC分类号： H04M1/72502 ,  H03M13/31 ,  H03M5/145 ,  H04L25/4908

摘要： A method of establishing a wireless communication link between a base unit and a remote unit is disclosed. The base unit transmits periodically a sync signal in a first selected time period in a selected frequency channel. The remote unit scans for the clock signal. The remote unit transmits a first response signal encoded by a first code in the selected frequency channel in response to the detection of the clock signal. The first response signal is transmitted in a second selected time period, different from the first selected time period. The base unit transmits a first control signal which is encoded by said first code, in the selected frequency channel, in a third selected time period, which is different from the first and second selected time periods. The first control signal contains a second code to be used in the communication session between the base unit and the remote unit. The remote unit receives the first control signal in the third time period. The remote unit decodes the first control signal. Thereafter, communication in the selected frequency channel is accomplished between the base unit and the remote unit by the base unit transmitting an encoded data signal, encoded by the second code, in a fourth selected time period different from the first, second and third selected time periods, and by the remote unit transmitting an encoded data signal, encoded by the second code, in a fifth selected time period, which is different from the first, second, third and fourth time periods.

摘要翻译： 公开了一种在基本单元和远程单元之间建立无线通信链路的方法。 基本单元周期性地在所选择的频道中的第一选定时间周期内发送同步信号。 远程单元扫描时钟信号。 远程单元响应于时钟信号的检测，发送由所选频道中的第一代码编码的第一响应信号。 第一响应信号在与第一选择的时间段不同的第二选定时间段内发送。 基站单元在与所选择的第一和第二时间周期不同的第三选定时间段内，在所选频道中发送由所述第一码编码的第一控制信号。 第一控制信号包含要在基本单元和远程单元之间的通信会话中使用的第二代码。 远程单元在第三时间段接收第一控制信号。 远程单元解码第一控制信号。 此后，所选择的频道中的通信是由基本单元在基本单元之间通过第二选择的时间段在第四选定的时间段内传送由第二代码编码的编码数据信号来实现的， 并且由远程单元在与第一，第二，第三和第四时间段不同的第五选定时间段中传送由第二代码编码的编码数据信号。

公开(公告)号：US5398258A

公开(公告)日：1995-03-14

申请号：US143170

申请日：1993-10-26

申请人： Chun-Meng Su ,  Saman Behtash ,  Keith Jarett ,  Huihung Lu ,  Christopher Flores ,  David G. Messerschmitt ,  Edward Chien

发明人： Chun-Meng Su ,  Saman Behtash ,  Keith Jarett ,  Huihung Lu ,  Christopher Flores ,  David G. Messerschmitt ,  Edward Chien

IPC分类号： H03M5/14 ,  H03M13/31 ,  H04J1/12 ,  H04J3/06 ,  H04J13/16 ,  H04L25/49 ,  H04M1/725 ,  H04L27/30

CPC分类号： H04J1/12 ,  H03M13/31 ,  H03M5/145 ,  H04J3/0605 ,  H04L25/4908 ,  H04M1/72502 ,  H04J13/16

摘要： In the present invention a wireless communication system is disclosed. A base unit communicates with a remote unit. The system comprises means for transmitting, using CDMA, between the base unit and the remote unit, in one of a plurality of frequencies channels selected. In one period of time, the base unit transmits and in another period of time, different from the one period, the remote unit transmits. Further, the system comprises means for changing the one frequency channel selected to another frequency channel, different from the one frequency channel, in response to interference in the one frequency channel. Thus, communication between the base unit and the remote unit is then affected over the another frequency channel.

摘要翻译： 在本发明中，公开了一种无线通信系统。 基本单元与远程单元通信。 该系统包括用于在所选择的多个频率信道之一中使用CDMA在基本单元和远程单元之间进行发送的装置。 在一个时间段内，基站单元在远程单元发送的另一个时间段内发送不同于一个周期的时间段。 此外，该系统包括用于响应于一个频率信道中的干扰而将选择的一个频率信道改变为与一个频率信道不同的另一频率信道的装置。 因此，基本单元和远程单元之间的通信然后在另一频率信道上受到影响。

公开(公告)号：US5907422A

公开(公告)日：1999-05-25

申请号：US779204

申请日：1997-01-06

申请人： Ching Ho ,  Yue-Syan Jou ,  Chun-Meng Su ,  Peter Wang ,  Yong Cheng Tu

发明人： Ching Ho ,  Yue-Syan Jou ,  Chun-Meng Su ,  Peter Wang ,  Yong Cheng Tu

IPC分类号： H04B10/158 ,  H04B10/06

CPC分类号： H04B10/6931

摘要： An optical receiver communication system converts optical signals modulated by analog or digital waveforms to RF signals. The optical receiver contains an automatic level control circuit to adjust the electronic gain of the system across a broad bandwidth spectrum. Two impedance matching circuits are designed using broad band matching technique to expand the bandwidth for increasing the maximum receivable frequencies to 1 GHz. A RLC impedance matching circuit forms a resonant combination to maintain .+-.1 dB fluctuation between the low-and-high-frequency limits of the bandwidth, and a 75.OMEGA. impedance matching circuit creates a 180.degree. phase shift between outgoing and incoming signals to ensure low return loss.

摘要翻译： 光接收机通信系统将由模拟或数字波形调制的光信号转换为RF信号。 光接收器包含一个自动电平控制电路，用于在宽带宽频谱上调整系统的电子增益。 使用宽带匹配技术设计两个阻抗匹配电路，以扩大带宽以将最大可接收频率增加到1GHz。 RLC阻抗匹配电路形成谐振组合，以在带宽的低频和高频极限之间保持+/- 1dB的波动，并且75个OMEGA阻抗匹配电路在输出和输入信号之间产生180°的相移 确保低回报损失。

公开(公告)号：US5257265A

公开(公告)日：1993-10-26

申请号：US741310

申请日：1991-08-07

申请人： Chun-Meng Su ,  Chanchai Poonpol ,  George M. Peponides

发明人： Chun-Meng Su ,  Chanchai Poonpol ,  George M. Peponides

IPC分类号： H04B7/005 ,  H04J3/06

CPC分类号： H04B7/005 ,  H04L7/041

摘要： For every TDMA block the receiver operation starts with a forward processing procedure and operates on received samples in a first-in first-served order. A sync word detector 32a (see FIG. 4 ) ensures the correct TDMA frame timing and starts the equalizer training. Detected data is stacked in a decision buffer 46. An adaptive equalizer 34a outputs a decision error signal that is used to generate a latch-type loss-of-lock flag. Without loss-of-lock, the receiver works through to the last data symbol and the frame processing is finished.Forward processing is halted and the receiver switches to a backward processing branch if the receiver loses lock midway through the data block. The backward processing branch processes received samples from the input buffer 30 in reverse order. The sync word detector 32b detects the reverse trailing sync word (SYNC #2) and recovers the TDMA symbol timing. The receiver then trains the equalizer and starts data processing in a reverse mode. The detected data is then stacked in the decision buffer 46, starting from Nth symbol. The reverse loss-of-lock detector works the same as the forward loss-of-lock detector, however the control logic is modified such that backward processing works until either detected data overwrites a portion of the forward-processed data, or a loss-of-lock is declared. In the former case, the frame processing is finished. In the latter case, the midpoint between the two loss-of-lock points is calculated and, if needed, both processes are enabled toward the midpoint.

摘要翻译： 对于每个TDMA块，接收机操作以转发处理过程开始，并以先到先后的顺序对所接收的样本进行操作。 同步字检测器32a（参见图4）确保正确的TDMA帧定时并开始均衡器训练。 检测到的数据被堆叠在判定缓冲器46中。自适应均衡器34a输出用于产生锁存型失锁标志的判定误差信号。 没有锁定损失，接收器工作到最后的数据符号，帧处理完成。 如果接收器在数据块的中途失去锁定，则停止转发处理并且接收器切换到后向处理分支。 后向处理分支以相反的顺序处理来自输入缓冲器30的接收样本。 同步字检测器32b检测反向后同步字（SYNC＃2）并恢复TDMA符号定时。 接收机然后训练均衡器并以反向模式开始数据处理。 然后将检测到的数据从第N个符号开始堆叠在判定缓冲器46中。 反向丢失锁定检测器的工作原理与前向锁定锁定检测器相同，但是控制逻辑被修改为使得后向处理工作，直到检测到的数据覆盖正向处理的数据的一部分， 声明了。 在前一种情况下，帧处理结束。 在后一种情况下，计算两个失锁点之间的中点，如果需要，两个进程都能够朝向中点启用。

公开(公告)号：US5745276A

公开(公告)日：1998-04-28

申请号：US430893

申请日：1995-04-27

申请人： Ching Ho ,  Yue-Syan Jou ,  Chun-Meng Su ,  Peter Wang ,  Yong Cheng Tu

发明人： Ching Ho ,  Yue-Syan Jou ,  Chun-Meng Su ,  Peter Wang ,  Yong Cheng Tu

IPC分类号： H04B10/158 ,  H04B10/06

CPC分类号： H04B10/6931

摘要： An optical receiver communication system converts optical signals modulated by analog or digital waveforms to RF signals. The optical receiver contains an automatic level control circuit to adjust the electronic gain of the system accordingly across a broad bandwidth spectrum. Two impedance matching circuit are designed using broad band matching technique to expand the bandwidth for increasing the maximum receivable frequency to 1 GHz. A RLC impedance matching circuit forms a resonant combination to maintain .+-.1 dB fluctuation between the low-and high-frequency limits of the bandwidth, and a 75 .OMEGA. impedance matching circuit creates a 180.degree. phase shift between the outgoing and the incoming signal for low return loss.

摘要翻译： 光接收机通信系统将由模拟或数字波形调制的光信号转换为RF信号。 光接收器包含一个自动电平控制电路，用于在宽带宽频谱上相应地调整系统的电子增益。 使用宽带匹配技术设计两个阻抗匹配电路，以扩大带宽，将最大可接收频率增加到1 GHz。 RLC阻抗匹配电路形成谐振组合，以在带宽的低频和高频极限之间保持+/- 1dB的波动，并且75欧米茄阻抗匹配电路在输出和输入信号之间产生180°的相移 低回报损失。

公开(公告)号：US5212808A

公开(公告)日：1993-05-18

申请号：US789736

申请日：1991-11-08

申请人： Chun-Meng Su ,  Keith Jarett ,  Christopher Flores

发明人： Chun-Meng Su ,  Keith Jarett ,  Christopher Flores

IPC分类号： H03M5/14 ,  H03M13/31 ,  H04L25/49 ,  H04M1/725

CPC分类号： H03M5/145 ,  H03M13/31 ,  H04L25/4908 ,  H04M1/72502

摘要： In the present invention a method of re-establishing a wireless communication after a communication break is disclosed. Prior to the communication break, a base unit transmits to a remote unit a table of channels of communication to be used. The base unit also transmits a clock signal value to the remote unit. After a communication break, the remote unit continues to count the clock signals generated from a clock signal source internal thereto. The remote unit applies a function to the value of the clock signal to obtain an entry in the table. The channel of communication associated with the entry in the table is selected by the remote unit. The base unit continues to count the clock signals generated internal thereto. The base unit applies the same function as the function used by the remote unit to the value of the clock signal to obtain an entry in the table. The base unit selects the channel of communication associated with the entry in the table. Thereafter, communication is re-established over the channel of communication associated with the entry in the table.

摘要翻译： 在本发明中，公开了在通信中断之后重新建立无线通信的方法。 在通信中断之前，基站单元向远程单元发送要使用的通信信道的表。 基本单元还向远程单元发送时钟信号值。 在通信中断之后，远程单元继续对从其内部的时钟信号源产生的时钟信号进行计数。 远程单元对时钟信号的值应用功能，以获得表中的条目。 与表中的条目相关联的通信通道由远程单元选择。 基本单元继续对其内部产生的时钟信号进行计数。 基本单元将与远程单元使用的功能相同的功能应用于时钟信号的值，以获得表中的条目。 基本单元选择与表中的条目相关联的通信信道。 此后，通过与表中的条目相关联的通信信道重新建立通信。