公开(公告)号：US06631124B1

公开(公告)日：2003-10-07

申请号：US09432989

申请日：1999-11-03

申请人： Havish Koorapaty ,  Yi-Pin Eric Wang ,  Paul W. Dent

发明人： Havish Koorapaty ,  Yi-Pin Eric Wang ,  Paul W. Dent

IPC分类号： H04J300

CPC分类号： H04W72/08 ,  H04B7/2618 ,  H04W48/06

摘要： A wireless communications system including at least one base station operative to communicate with terminals on a plurality of carrier frequencies in repetitive time slots defined thereon is operated by assigning an entire time slot or a spreading-code defined subchannel of a time slot to a terminal based on a communications constraint associated with the terminal. The communications constraint may include a performance requirement, such as an information rate or an error rate, and a signal reception condition, such as signal to noise ratio. According to another aspect, a wireless communications system determines a communications constraint associated with a terminal. The system assigns a time slot, a spreading code, a coding rate and a bandwidth to the terminal based on the determined communications constraint. Preferably, the system assigns a time slot, a spreading code, a coding rate and a bandwidth to the terminal such that at least one of an available bandwidth, a number of available time slots, and a number of available spreading codes is optimized. Related apparatus are also described.

摘要翻译： 一种无线通信系统，包括至少一个基站，可操作以与在其上定义的重复时隙中的多个载波频率上的终端进行通信，通过将时隙的全部时隙或扩展码定义的子信道分配给终端来进行操作 关于与终端相关联的通信约束。 通信约束可以包括诸如信息速率或错误率的性能要求，以及诸如信噪比的信号接收条件。 根据另一方面，无线通信系统确定与终端相关联的通信约束。 系统基于所确定的通信约束向终端分配时隙，扩展码，编码率和带宽。 优选地，系统向终端分配时隙，扩展码，编码率和带宽，使得可用带宽，可用时隙的数量和可用扩展码的数量中的至少一个被优化。 还描述了相关装置。

公开(公告)号：US06591100B1

公开(公告)日：2003-07-08

申请号：US09196005

申请日：1998-11-19

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04Q720

CPC分类号： H04W48/16 ,  H04W48/20 ,  Y02D70/1222

摘要： A device and method is provided that transmits a monitor report to the current base station concurrently with the transmission of the informational content carrying signals by embedding the monitor report in the informational content carrying signals. The current base station uses the monitor report to initiate transfer of service for the mobile communication device to the base station with the strongest carrier signal strength by sending appropriate signals to the mobile switching center that in turn signals the base station to take over service for the mobile communication device. A wideband digitizing circuit obtains amplified wideband analog signals from the receiver before channel filtering and demodulation, and converts them to complex digital samples. The digital samples are obtained at a rate greater than the Nyquist rate for the total scanned bandwidth but are only taken during a very short time interval commensurate with the reciprocal of the channel spacing, thereby reducing power consumption to a minimum. The digital samples are then operated on by a microprocessor or signal processor to determine energy in a plurality of channels, preferably using a fast Fourier transform. The analysis results in an indication of the channels containing the strongest signals and this information is provided in the monitor report sent to the current base station.

摘要翻译： 提供了一种装置和方法，通过将监视报告嵌入到信息内容携带信号中，通过传送信息内容携带信号同时向当前基站发送监视报告。 当前的基站使用监视报告，通过向移动交换中心发送适当的信号，以最强的载波信号强度来启动移动通信设备向基站的业务传输，而移动交换中心又向基站发信号通知接收业务 移动通信设备。 宽带数字化电路在信道滤波和解调之前从接收机获得放大的宽带模拟信号，并将其转换为复数数字样本。 数字样本以大于奈奎斯特速率的速率获得，对于总扫描带宽而言，仅在与信道间隔的倒数相当的非常短的时间间隔内进行，从而将功耗降至最低。 然后，数字样本由微处理器或信号处理器操作以确定多个通道中的能量，优选地使用快速傅里叶变换。 分析结果显示包含最强信号的信道，并且该信息在发送到当前基站的监视报告中提供。

公开(公告)号：US06577199B2

公开(公告)日：2003-06-10

申请号：US09730791

申请日：2000-12-07

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H03F304

CPC分类号： G06F21/606 ,  H01P1/212 ,  H03F1/565 ,  H03F3/19 ,  H03F3/217 ,  H03H7/0123 ,  H03H7/1758 ,  H03H7/1775 ,  H03H7/383

摘要： Systems and methods for increasing the efficiency of direct current (DC) power to radio frequency (RF) power include a harmonic matching network that inhibits harmonic current flow for a number of harmonic frequencies. The matching network includes a number of sections, where each section generates an impedance that resonates with the output capacitance at a harmonic frequency. Each section of the matching network also creates a high impedance to the amplifier at the respective odd harmonic frequency.

公开(公告)号：US06571212B1

公开(公告)日：2003-05-27

申请号：US09639191

申请日：2000-08-15

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： G10L1900

CPC分类号： H04W12/02 ,  H04L1/004 ,  H04L1/0065 ,  H04L63/0435 ,  H04L63/0457 ,  H04M1/2535 ,  H04M1/725 ,  H04M1/72519 ,  H04M7/006 ,  H04M2207/18 ,  H04M2242/04 ,  H04W4/18

摘要： A system for Internet Protocol voice communication comprises using both the Internet and wireless communications systems to communicate between two individuals. The speech is encrypted and encoded prior to transmission with an error indication field appended to the speech bits. Formatting for the Internet leg of the communications occurs according to Internet Protocol. Errors arising during the wireless transmission are addressed by appropriately ordering the encryption, error correction coding, and error detection together with the appended error indication field.

摘要翻译： 一种用于因特网协议语音通信的系统包括使用互联网和无线通信系统来在两个人之间进行通信。 语音在传输之前进行加密和编码，并附加到语音比特的错误指示字段。 根据互联网协议，通信的互联网分支的格式化发生。 在无线传输期间出现的错误通过适当排序加密，纠错编码和错误检测以及附加的错误指示字段来解决。

公开(公告)号：US06570910B1

公开(公告)日：2003-05-27

申请号：US09426374

申请日：1999-10-25

申请人： Gregory E. Bottomley ,  Paul W. Dent ,  Ross W. Lampe

发明人： Gregory E. Bottomley ,  Paul W. Dent ,  Ross W. Lampe

IPC分类号： H04B166

CPC分类号： H04L25/03337 ,  H03M13/39 ,  H04B17/26 ,  H04B17/318 ,  H04B17/373 ,  H04L1/0054 ,  H04L25/0212 ,  H04L25/025

摘要： In a receiver for receiving data samples including a sequence of symbol values transmitted across the channel, a baseband processor including a first hypothesize unit developing first sets of hypothetical symbol values, a second hypothesize unit developing second sets of hypothetical symbol values different from the first sets, a parameter estimator receiving the received data samples and the first and second sets of hypothetical symbol values and developing parameter estimates based thereon, and a sequence estimator receiving the developed parameter estimates, the first sets of hypothetical symbol values and a delayed version of the received data samples and developing a sequence of detected symbol values related to the received data samples.

摘要翻译： 在用于接收数据样本的接收机中，包括通过所述信道发送的符号值序列的基带处理器，包括第一假设单元，其形成第一组假设符号值;第二假设单元，形成与所述第一组不同的第二组假设符号值 接收接收到的数据样本的参数估计器以及基于其的开发参数估计的第一和第二组假设符号值以及接收所开发的参数估计的序列估计器，所接收的第一组假设符号值和延迟版本 数据样本并开发与接收的数据样本相关的检测符号值的序列。

公开(公告)号：US06529707B1

公开(公告)日：2003-03-04

申请号：US09477360

申请日：2000-01-04

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04B7185

CPC分类号： H04W88/06 ,  H04B1/3877 ,  H04B7/18563 ,  H04B7/18571 ,  H04W84/105 ,  H04W88/02

摘要： A dual mode telephone is used with a satellite communication adapter. A cellular-type handportable phone is equipped with a connector for the attachment of accessories. This connector provides a satellite communications adapter accessory access to the handset's signal processing resources which may operate in an alterative mode to process signals received from the satellite and converted by the adapter into a suitable form for processing. The processing translates the satellite signals into voice or data, and vice-versa.

摘要翻译： 双模电话与卫星通信适配器一起使用。 蜂窝式手提式手机配备有用于附件附件的连接器。 该连接器提供卫星通信适配器附件访问手机的信号处理资源，其可以以替代模式操作以处理从卫星接收并由适配器转换成适合的处理形式的信号。 该处理将卫星信号转换成语音或数据，反之亦然。

公开(公告)号：US06418319B1

公开(公告)日：2002-07-09

申请号：US09526673

申请日：2000-03-16

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04Q720

CPC分类号： H04W88/06 ,  H04B7/18545 ,  H04B7/1855 ,  H04B7/18563 ,  H04W8/10 ,  H04W68/00 ,  H04W68/02 ,  H04W68/12

摘要： A method for determining the position of a mobile radio telephone in a satellite communication system includes a mobile radio telephone scanning a plurality of paging channels and measuring the signal strength of the paging channels. The mobile radio telephone then selects the paging channel with the strongest signal strength and decodes the information broadcasted on the selected channel. The information contained in the paging channel can include frequencies or timeslots of paging channels in surrounding spot beams. The mobile station then measures the signal strength of paging channels in surrounding spot beams and quantizes the measurements to determine a coarse position of the mobile radio telephone.

摘要翻译： 一种用于确定卫星通信系统中的移动无线电话的位置的方法包括扫描多个寻呼信道的移动无线电话并测量寻呼信道的信号强度。 然后移动无线电话选择具有最强信号强度的寻呼信道，并解码所选信道上广播的信息。 包含在寻呼信道中的信息可以包括周围光束中的寻呼信道的频率或时隙。 然后，移动站测量周围点波束中的寻呼信道的信号强度，并对测量进行量化，以确定移动无线电话的粗略位置。

公开(公告)号：US06359874B1

公开(公告)日：2002-03-19

申请号：US09082722

申请日：1998-05-21

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H04B7216

CPC分类号： H04L1/08 ,  H04J11/005 ,  H04J13/0048 ,  H04J13/18

摘要： The present invention discloses a CDMA coding method including the steps of converting the information to be transmitted into digital form, error-correction coding the digital information, and assembling the coded symbols into frames having N symbols. Each coded information symbol within a frame is then repeated a first number of times L1 in succession and the sign of select repeated symbols, determined by a spreading code generator, is changed to produce a symbol block of N×L1 symbols. The symbol block is then repeated a second umber of times L2, where for each block repeat, a block sign change is applied to all symbols of the same block; the sign for each block may also be supplied by the spreading code generator. The resulting L2×N×L1 coded and repeated symbols are then modulated upon a radio frequency carrier and transmitted to a receiver simultaneously with similar symbols intended for other receivers, where different information is transmitted to a plurality of receivers. Signals coded for simultaneous transmission to different receivers may include a greater number of information symbols repeated a reduced number L1 times or a lesser number of information symbols repeated a greater number L1 times, while still maintaining the same number of repeated symbols in a block. By assigning specific block-spreading sequences to groups of signals in various adjacent service areas or according to transmitter-receiver distance, strong signals can be better discriminated from weak signals and inter-cell interference can be reduced.

摘要翻译： 本发明公开了一种CDMA编码方法，包括以下步骤：将要发送的信息转换为数字形式，对数字信息进行纠错编码，并将编码的符号组合成具有N个符号的帧。 帧内的每个编码信息符号然后连续重复第一次L1，并且由扩展码产生器确定的选择重复符号的符号被改变以产生NxL1个符号的符号块。 然后，符号块重复第二个次数L2，其中对于每个块重复，块符号改变被应用于同一块的所有符号; 每个块的符号也可以由扩展码发生器提供。 所得到的L2xNxL1编码和重复符号然后在无线电频率载波上进行调制，并与用于其他接收机的类似符号同时发送到接收机，其中不同的信息被发送到多个接收机。 编码用于同时发送到不同接收机的信号可以包括更多数量的重复减少数量L1的信息符号或更少数量的重复更多数量L1的信息符号，同时仍然在块中保持相同数量的重复符号。 通过将特定的块扩展序列分配给各个相邻服务区域中的信号组，或者根据发射机 - 接收机距离，可以更好地识别弱信号，从而可以减小小区间干扰。

公开(公告)号：US06359506B1

公开(公告)日：2002-03-19

申请号：US09710537

申请日：2000-11-09

申请人： William O. Camp, Jr. ,  Paul W. Dent

发明人： William O. Camp, Jr. ,  Paul W. Dent

IPC分类号： H03F368

CPC分类号： H03F1/0294 ,  H03F1/0288

摘要： A power amplifier uses a modulation technique that varies amplitude of a drive signal and, optionally, phase angle of the drive signal. The power amplifier comprises two coupled amplifiers, a first one of which is operated saturated to produce a constant voltage output. The first amplifier is coupled to a second one of the amplifiers via a quarter wave transmission line. The second amplifier is operated in a linear mode to deliver an output signal controlled by an amplitude-modulating signal. The amplitude-modulating signal may be a bipolar modulation signal that produces both positive and negative outputs from the second amplifier that add to or subtract from the output from the first amplifier to develop at a load impedance net output signal amplitudes varying between a minimum or “trough” amplitude and a maximum or “crest” amplitude. The coupling of the first and second amplifiers through a quarter-wave line allows the signal current of the second amplifier to modulate the effective load impedance seen by the first amplifier to provide efficient amplifier coupling.

摘要翻译： 功率放大器使用调制技术来改变驱动信号的幅度和可选的驱动信号的相位角。 功率放大器包括两个耦合放大器，其中第一个放大器工作饱和以产生恒定电压输出。 第一放大器经由四分之一波传输线耦合到第二放大器。 第二放大器以线性模式操作，以传送由幅度调制信号控制的输出信号。 幅度调制信号可以是双极性调制信号，其产生来自第二放大器的正和负输出，其从第一放大器的输出加或减，以在最小或“最小值”之间变化的负载阻抗净输出信号幅度发展， 谷“幅度和最大或”波峰“振幅。 第一和第二放大器通过四分之一波长线的耦合允许第二放大器的信号电流调制由第一放大器看到的有效负载阻抗以提供有效的放大器耦合。

公开(公告)号：US06347125B1

公开(公告)日：2002-02-12

申请号：US09228160

申请日：1999-01-11

申请人： Paul W. Dent

发明人： Paul W. Dent

IPC分类号： H03D100

CPC分类号： H03M13/6325 ,  H03M13/41 ,  H03M13/6502 ,  H03M13/6508 ,  H04L25/03337

摘要： A decoder also includes a channel estimator to estimate coefficients describing a channel through which the signal has propagated, a signal predictor that combines the channel estimates with corresponding samples of the signal to obtain a metric, and a metric accumulator to accumulate the metrics for hypothesized symbol sequences to determine the likelihood indications. The hypothesized symbol sequences include partial symbols that select a subgroup of the symbol alphabet. This allows those parts of a symbol that are most important for predicting signal samples to be retained in a hypothesized state while the remaining parts can pass to a path history memory, thereby reducing the number of possible states that must be considered.

摘要翻译： 解码器还包括信道估计器，用于估计描述信号已经传播的信道的系数;信号预测器，其将信道估计与信号的对应样本组合以获得度量;以及度量累加器，用于累积假设符号的度量 确定可能性指标的序列。 假设的符号序列包括选择符号字母表的子组的部分符号。 这允许对预测信号样本最重要的符号的那些部分保持在假设状态，而其余部分可以传递到路径历史存储器，从而减少必须考虑的可能状态的数量。