公开(公告)号：US20090299715A1

公开(公告)日：2009-12-03

申请号：US12128729

申请日：2008-05-29

Applicant: Peter Wing Chan ,  Derek Chun Lee ,  Roger Shu Cheng ,  Chih-Lin I

Inventor： Peter Wing Chan ,  Derek Chun Lee ,  Roger Shu Cheng ,  Chih-Lin I

IPC: G06G7/48

CPC classification number: H04L25/0242 ,  H04L25/0256

Abstract: A method of modeling wireless communication channels in angular domain is disclosed. The method includes considering radiation patterns 101, 102 of the transmitter antenna and the receiver antenna, wherein the radiation patterns are represented by antenna characteristics sampled at a plurality of angular directions. A method of channel estimation based on the method of modeling wireless communication channel in angular domain is also disclosed.

Abstract translation: 公开了一种在角域中建模无线通信信道的方法。 该方法包括考虑发射机天线和接收机天线的辐射图案101,102，其中辐射图案由在多个角度方向上采样的天线特性表示。 还公开了一种基于角域中无线通信信道建模方法的信道估计方法。

公开(公告)号：US06580913B1

公开(公告)日：2003-06-17

申请号：US09690135

申请日：2000-10-16

Applicant: Pi-Hui Chao ,  Chih-Lin I

Inventor： Pi-Hui Chao ,  Chih-Lin I

IPC: H04Q730

CPC classification number: H04W16/10 ,  H04W16/12 ,  H04W28/16 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/0453 ,  H04W72/082 ,  H04W88/08 ,  H04W92/20

Abstract: The present invention concerns the efficient use of the radio spectrum in wireless communications. Channel occupancy data and channel availability data concerning a specific base station and its neighbors are used to assign frequency channels to mobile units and/or base stations. The channel occupancy and availability data may be located at a base station or at a mobile switching center. Channels are preferably assigned as channel pairs.

Abstract translation: 本发明涉及无线电频谱在无线通信中的有效使用。 使用关于特定基站及其邻居的信道占用数据和信道可用性数据来向移动单元和/或基站分配频率信道。 信道占用和可用性数据可以位于基站或移动交换中心。 信道优选地被分配为信道对。

公开(公告)号：US5784360A

公开(公告)日：1998-07-21

申请号：US811092

申请日：1997-03-03

Applicant: Chih-Lin I ,  Krishan Kumar Sabnani

Inventor： Chih-Lin I ,  Krishan Kumar Sabnani

IPC: H04B7/005 ,  H04B7/26 ,  H04J15/00 ,  H04W52/26 ,  H04W52/28 ,  H04B7/216

CPC classification number: H04W52/265 ,  H04W52/267 ,  H04W52/288

Abstract: The invention relates to the use of CDMA techniques. Data signals to be transmitted from a plurality of wireless devices are spread across a common bandwidth. The data signals are received by a base station as a composite spread signal. The base station partially despreads the composite spread signal with unique codes to extract data signals from individual wireless devices. The data rate and quality of service requirements for each wireless device are used to calculate a power factor and a control signal is sent to control the power from a particular wireless device. In addition, a probability of transmission value is calculated based on an equivalent current load value and an equivalent population value. The probability of transmission value determines whether a particular wireless device is allowed access to an uplink frequency channel.

Abstract translation: 本发明涉及CDMA技术的应用。 要从多个无线设备发送的数据信号在公共带宽上扩展。 数据信号由基站作为复合扩展信号接收。 基站用独特的代码部分地解扩复合扩展信号，以从各个无线设备提取数据信号。 使用每个无线设备的数据速率和服务质量要求来计算功率因数，并且发送控制信号以控制来自特定无线设备的功率。 此外，基于等效电流负载值和等效总体值计算发送价值的概率。 传输值的概率确定特定的无线设备是否允许访问上行链路频道。

公开(公告)号：US07941302B2

公开(公告)日：2011-05-10

申请号：US12129896

申请日：2008-05-30

Applicant: Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

Inventor： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

IPC: G06F17/50 ,  H04L27/00

CPC classification number: H04B17/0087

Abstract: Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatus 1200 to simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

Abstract translation: 公开了用于信道模拟的方法和装置。 要求保护的发明提供了用于模拟传播信道，特别是多输入多输入（MIMO）信道的方法和装置1200。 所要求保护的发明还提供了一种通过增强的信道模拟来有效优化天线的方法和装置。 要求保护的发明将天线特性和信道特性作为输入，并输出时变信道实现，以在优化下生成作为天线优化目标的系统度量。 所要求的发明有利的是提供增强的信道模拟以满足天线评估的精度要求。

公开(公告)号：US20090299717A1

公开(公告)日：2009-12-03

申请号：US12129896

申请日：2008-05-30

Applicant: Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

Inventor： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

IPC: G06F17/50

CPC classification number: H04B17/0087

Abstract: Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatus 1200 to simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

Abstract translation: 公开了用于信道模拟的方法和装置。 要求保护的发明提供了用于模拟传播信道，特别是多输入多输入（MIMO）信道的方法和装置1200。 所要求保护的发明还提供了一种通过增强的信道模拟来有效优化天线的方法和装置。 要求保护的发明将天线特性和信道特性作为输入，并输出时变信道实现，以在优化下生成作为天线优化目标的系统度量。 所要求的发明有利的是提供增强的信道模拟以满足天线评估的精度要求。

公开(公告)号：US6108321A

公开(公告)日：2000-08-22

申请号：US811986

申请日：1997-03-05

Applicant: Nefatiti Anderson ,  Simon C. Borst ,  Lynell E. Cannell ,  Terry Si-Fong Cheng ,  Lindsey Chew ,  Sudheer A. Grandhi ,  Chih-Lin I ,  Joseph Samuel Kaufman ,  Boris Dmitrievich Lubachevsky ,  Balakrishnan Narendran ,  Donna M. Sand

Inventor： Nefatiti Anderson ,  Simon C. Borst ,  Lynell E. Cannell ,  Terry Si-Fong Cheng ,  Lindsey Chew ,  Sudheer A. Grandhi ,  Chih-Lin I ,  Joseph Samuel Kaufman ,  Boris Dmitrievich Lubachevsky ,  Balakrishnan Narendran ,  Donna M. Sand

IPC: H04W16/04 ,  H04W16/10 ,  H04W72/04 ,  H04W72/06 ,  H04W72/08 ,  H04Q7/00

CPC classification number: H04W16/10 ,  H04W72/082 ,  H04W16/04

Abstract: An interference based dynamic channel assignment scheme for a wireless communication network, for self configuring dynamic channel assignment of a plurality of channels, comprises the steps of: prioritizing a channel list and prioritizing a selected subset of the prioritized channel list. In further enhancements of the present invention, prioritizing a channel list is distributed on a per cell/sector basis so that prioritization is independent of frequency usage information from other cells/sectors and prioritization is based upon uplink and downlink characteristics.

Abstract translation: 用于无线通信网络的用于自配置多个信道的动态信道分配的基于干扰的动态信道分配方案包括以下步骤：优先化信道列表并对优先化的信道列表的选定子集进行优先级排序。 在本发明的进一步增强中，按照每个小区/扇区来分配信道列表的优先级，使得优先级独立于来自其它小区/扇区的频率使用信息，并且基于上行链路和下行链路特性进行优先级排序。

公开(公告)号：US6009089A

公开(公告)日：1999-12-28

申请号：US700266

申请日：1996-08-20

Applicant: Howard C. Huang ,  Chih-Lin I ,  Stephan ten Brink

Inventor： Howard C. Huang ,  Chih-Lin I ,  Stephan ten Brink

IPC: H04B1/7107 ,  H04B1/7115 ,  H04B1/712 ,  H04J13/00

CPC classification number: H04B1/7107 ,  H04B1/71072 ,  H04B1/7115 ,  H04B1/712 ,  H04B2001/71077 ,  H04B2201/70701

Abstract: A Code-Division Multiple Access (CDMA) receiver is disclosed which removes the pilot signal from the received signal. The pilot signal is defined by its multipath parameters (amplitudes, phase shift and delays) and its signature sequence. Since this information is known at the user's receiver terminal (i.e., handset), the pilot signals of the interfering multipath components of the baseband received signal are detected and removed prior to demodulation of the desired multipath component. The pilot signal may be cancelled prior to or following the data accumulation stage.

Abstract translation: 公开了一种从接收信号中去除导频信号的码分多址（CDMA）接收机。 导频信号由其多径参数（幅度，相移和延迟）及其签名序列定义。 由于该信息在用户的接收机终端（即，手机）处是已知的，所以在解调期望的多路径分量之前检测和去除基带接收信号的干扰多径分量的导频信号。 可以在数据累积阶段之前或之后取消导频信号。

公开(公告)号：US5737326A

公开(公告)日：1998-04-07

申请号：US678834

申请日：1996-07-12

Applicant: Chih-Lin I ,  Andrzej Partyka ,  Charles Albert Webb, III

Inventor： Chih-Lin I ,  Andrzej Partyka ,  Charles Albert Webb, III

IPC: H04B1/7085 ,  H04B1/709 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04L7/00 ,  H04B7/216 ,  H04J13/04

CPC classification number: H04B1/7085 ,  H04B1/709 ,  H04B7/264 ,  H04J13/0077

Abstract: A Multi-Code (MC) Code Division Multiple Access (CDMA) receiver receives N (where N>1) encoded signal channels over multiple air signal paths. In the MC-CDMA receiver, once a timing correlator means has recovered the timing and control signals for the data signal received over any particular signal path, those timing and control signals are utilized by each of the N data (second type) correlator means for decoding and despreading an associated one of the N data signal channels received over that path.

Abstract translation: 多码（MC）码分多址（CDMA）接收机通过多个空中信号路径接收N（其中N≥1）个编码信号信道。 在MC-CDMA接收机中，一旦定时相关器装置恢复了用于在任何特定信号路径上接收的数据信号的定时和控制信号，则这些定时和控制信号由N个数据（第二类型）相关器装置中的每一个利用 解码和解扩通过该路径接收的N个数据信号信道中的相关一个。

公开(公告)号：US5625884A

公开(公告)日：1997-04-29

申请号：US255684

申请日：1994-06-08

Applicant: Richard D. Gitlin ,  Chih-Lin I

Inventor： Richard D. Gitlin ,  Chih-Lin I

IPC: H04W68/00 ,  H04B7/00

CPC classification number: H04W68/00

Abstract: A method and apparatus providing communications between mobile units and other communications devices, is disclosed wherein, in response to a request to call a mobile unit from an originating communications device, a paging signal is sent via a global communications network and received by a mobile unit. The paging signal contains caller and callee identification codes, which are decoded by the mobile unit. A paging response signal, in the form of a reverse call setup signal, is then transmitted from the mobile unit to the originating communications device. Transmission of the paging signal is preferably stopped when a correspondence condition exists such that the caller and callee identification codes of the paging signal correspond to the caller and caller identification codes of the paging response signal.

Abstract translation: 公开了一种在移动单元和其他通信设备之间提供通信的方法和装置，其中响应于从始发通信设备呼叫移动单元的请求，经由全球通信网络发送寻呼信号并由移动单元接收 。 寻呼信号包含由移动单元解码的呼叫者和被叫者识别码。 然后，以反向呼叫建立信号的形式的寻呼响应信号从移动单元发送到始发通信设备。 当存在呼叫信号的呼叫者和被呼叫者识别码对应于呼叫者和寻呼响应信号的呼叫者识别码时，寻呼信号的发送最好停止。

公开(公告)号：US5119196A

公开(公告)日：1992-06-02

申请号：US542612

申请日：1990-06-25

Applicant: Ender Ayanoglu ,  Israel Bar-David ,  Richard D. Gitlin ,  Chih-Lin I ,  Jack H. Winters

Inventor： Ender Ayanoglu ,  Israel Bar-David ,  Richard D. Gitlin ,  Chih-Lin I ,  Jack H. Winters

IPC: H04N5/21

CPC classification number: H04N5/211

Abstract: Ghosts are canceled in received analog TV (for IDTV, EDTV, and HDTV) signals by utilizing the fact that there are short periods of time without the analog signals (the horizontal flyback interval between the lines) to process the received signal on a line-to-line basis using a finite impulse response (FIR) or an infinite impulse response (IIR) equalizer. This line-by-line processing (which can be implemented by periodic cleansing of the equalizer) overcomes the limitations of standard equalizers to allow for 40-50 dB of suppression of ghosts, even with nulls in the spectrum, as long as the ghost delay is less than the period of time without the analog signal. Furthermore, by using time inversion in combination with line-by-line processing, the stability problem of the conventional IIR equalizer is eliminated. The IIR equalizer may be implemented on a single digital integrated circuit. Alternatively, an FIR equalizer can be used which, although it may require multiple chips (i.e., more taps), can acquire and adapt to the ghosted channel more rapidly than an IIR equalizer. With line-by-line processing, FIR and IIR equalizers can eliminate any ghost with delays up to 11 .mu.sec in IDTV or EDTV. For larger delays, a standard IIR or FIR equalizer can be used as a preprocessor to eliminate small ghosts and an adaptive antenna can be used to eliminate large ghosts. Thus, with these techniques, the ghosting problem can be eliminated in all TV receivers.