公开(公告)号：US20040047316A1

公开(公告)日：2004-03-11

申请号：US10637463

申请日：2003-08-08

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk

IPC: H04B007/216

CPC classification number: H04J13/10 ,  H04J13/0022 ,  H04J13/102 ,  H04J2013/0037

Abstract: A transmission apparatus for generating a complex four-phase pseudo-random sequence having I and Q portions includes a shift register and an accumulator. The shift register has a plurality of positions. The accumulator has a first input for receiving an output from the shift register and a second input for receiving a predetermined value. The accumulator combines the data received via the first and second inputs and outputs the combined data to the shift register. Bits from a first predetermined position within the shift register are used to generate the I portion of the sequence and bits from a second predetermined position within the shift register are used to generate the Q portion of the sequence.

Abstract translation: 用于产生具有I和Q部分的复四相伪随机序列的传输装置包括移位寄存器和累加器。 移位寄存器具有多个位置。 累加器具有用于接收来自移位寄存器的输出的第一输入端和用于接收预定值的第二输入端。 累加器组合经由第一和第二输入接收的数据，并将组合的数据输出到移位寄存器。 来自移位寄存器内的第一预定位置的位用于产生序列的I部分，并且使用移位寄存器内的第二预定位置的位来产生序列的Q部分。

公开(公告)号：US20030072357A1

公开(公告)日：2003-04-17

申请号：US10267512

申请日：2002-10-09

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Fatih M. Ozluturk

IPC: H04B001/707

CPC classification number: H04B1/708 ,  H04B1/70735 ,  H04B1/7077 ,  H04B1/7093 ,  H04B2201/7071

Abstract: A User Equipment (UE) has a circuit that performs the acquisition for the low chip rate option of the Universal Mobile Telecommunication System (UMTS) Time Division Duplex (TDD) standard as formulated by the Third Generation Partnership Project (3GPP). The present invention implements the detection of the basic SYNC code; the determination of the midamble used and the detection of the superframe timing based on SYNC code modulation sequence. This enables reading of a full Broadcast Channel (BCH) message.

Abstract translation: 用户设备（UE）具有执行由第三代合作伙伴计划（3GPP）制定的通用移动电信系统（UMTS）时分双工（TDD）标准的低码片速率选项的获取的电路。 本发明实现了基本SYNC码的检测; 使用的midamble的确定和基于SYNC码调制序列的超帧定时的检测。 这使得能够读取完整的广播信道（BCH）消息。

公开(公告)号：US20030026323A1

公开(公告)日：2003-02-06

申请号：US10201831

申请日：2002-07-23

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk

IPC: H04B001/69

CPC classification number: H03K3/84 ,  H04L9/0662 ,  H04L9/12 ,  H04L2209/12 ,  H04L2209/805

Abstract: One embodiment of the invention is a subscriber unit for transmitting communication signals. The subscriber unit comprises a cipher stream generator which generates a cipher stream to encipher a digital data stream. A data stream mixer mixes the cipher stream with the digital data stream. An antenna radiates the mixed cipher and data stream as a communication signal. Another embodiment of the invention is a subscriber unit for receiving communication signals. The subscriber unit comprises a cipher stream generator for generating a cipher stream with the received communication signal to produce a decoded data stream. The cipher steam_generator includes first and second linear feedback shift registers. Each has a clock input and an output. The outputs are combined to generate the cipher stream. The output of the second register is combined with a clock signal which is inputted to the clock input to the first register.

Abstract translation: 本发明的一个实施例是用于发送通信信号的用户单元。 用户单元包括密码流生成器，其生成密码流以加密数字数据流。 数据流混合器将密码流与数字数据流混合。 天线将混合密码和数据流作为通信信号进行辐射。 本发明的另一实施例是用于接收通信信号的用户单元。 用户单元包括密码流生成器，用于生成具有接收到的通信信号的密码流，以产生解码的数据流。 密码蒸汽发生器包括第一和第二线性反馈移位寄存器。 每个都有一个时钟输入和一个输出。 输出被组合以产生密码流。 第二寄存器的输出与输入到第一寄存器的时钟输入的时钟信号组合。

公开(公告)号：US20020176395A1

公开(公告)日：2002-11-28

申请号：US10187484

申请日：2002-07-01

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk ,  Alexander M. Jacques

IPC: H04B007/216

CPC classification number: H04B1/71 ,  H04B1/70735 ,  H04B1/7101 ,  H04B1/7115

Abstract: A method is disclosed for receiving a transmitted signal in a communication system employing CDMA techniques wherein the transmitted signal includes a plurality of short codes, each of which is transmitted repetitively over a fixed period of time and where the received signal has CW interference in addition to the transmitted signal. The method includes using a Sequential Ratio Probability Test (SPRT) for detecting the presence of the short code in a plurality of time phases of the received signal by calculating a likelihood ratio for each phase. A likelihood ratio is a comparison of the signal's Probability Distribution Function (PDF) with a background noise PDF. The background noise PDF is calculated by combining in the RAKE the current short code with the input signal.

Abstract translation: 公开了一种用于在采用CDMA技术的通信系统中接收发送信号的方法，其中所发送的信号包括多个短码，每个短码在固定时间段内重复发送，并且其中接收信号除了具有CW干扰之外 发送信号。 该方法包括使用连续比率概率测试（SPRT）来通过计算每个相位的似然比来检测接收信号的多个时间相位中的短码的存在。 似然比是信号的概率分布函数（PDF）与背景噪声PDF的比较。 通过将RAKE中的当前短码与输入信号组合来计算背景噪声PDF。

公开(公告)号：US20020118705A1

公开(公告)日：2002-08-29

申请号：US10074949

申请日：2002-02-13

Applicant: InterDigital Technology Corporation

Inventor： Nadir Sezgin ,  Fatih M. Ozluturk

IPC: H04J003/06

CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/70752 ,  H04B1/7093 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04L27/2053 ,  H04W56/00 ,  H04W74/04 ,  H04W88/08

Abstract: A user equipment (UE) is capable of receiving and transmitting communication signals in a time division duplex using code division multiple access format. The UE receives a primary code synchronization (PSC) signal, the PSC signal is received in a selected time slot in a PSC channel. Secondary synchronization signals are identified. The secondary synchronization signals are received along with the PSC signal. An assigned code group and the selected time slot is determined based on the identified secondary synchronization signals. The assigned code group is out of a predetermined number N of possible code groups. Each combination of the N code groups and the selected time slot associated with a unique combination of secondary signals from a set of secondary signals which does not exceed (log2N)null1 in number.

Abstract translation: 用户设备（UE）能够使用码分多址格式在时分双工中接收和发送通信信号。 UE接收主码同步（PSC）信号，在PSC信道的选定时隙中接收PSC信号。 二次同步信号被识别。 次同步信号与PSC信号一起被接收。 基于所识别的辅助同步信号来确定分配的代码组和所选择的时隙。 分配的代码组超出预定数量N个可能的代码组。 N个码组和所选择的时隙的每个组合与来自不超过（log2N）+1的次级信号的一组二次信号的唯一组合相关联。

公开(公告)号：US20020097705A1

公开(公告)日：2002-07-25

申请号：US10074641

申请日：2002-02-13

Applicant: InterDigital Technology Corporation

Inventor： Nadir Sezgin ,  Fatih M. Ozluturk

IPC: H04J003/06

CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/70752 ,  H04B1/7093 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04L27/2053 ,  H04W56/00 ,  H04W74/04 ,  H04W88/08

Abstract: A base station is capable of communicating in a time division duplex using code division multiple access format. The base station transmits a primary synchronization signal and secondary synchronization signals for synchronization purposes. A primary synchronization signal is transmitted in a selected time slot in a primary synchronization channel. The primary synchronization channel uses a plurality of time slots for communication. Each of a plurality of combinations of N code groups and the plurality of time slots is associated with a unique combination of secondary synchronization signals from a set of secondary synchronization signals, which does not exceed (log2 N)null1 in number. Selected secondary synchronization signals are transmitted out of a set of secondary synchronization signals. The selected secondary signals are associated with one of the N code groups. The one group is associated with the base station.

Abstract translation: 基站能够使用码分多址格式在时分双工中进行通信。 为了同步目的，基站发送主同步信号和次同步信号。 主同步信号在主同步信道中的选定时隙中发送。 主同步信道使用多个时隙进行通信。 N个码组和多个时隙的多个组合中的每一个与来自不超过（log2 N）+1的次级同步信号的一组次同步信号的唯一组合相关联。 选择的次同步信号从一组次同步信号中发送出去。 选择的辅助信号与N个码组中的一个相关联。 一组与基站相关联。

公开(公告)号：US20020090967A1

公开(公告)日：2002-07-11

申请号：US10087675

申请日：2002-03-01

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk ,  Gary R. Lomp

IPC: H04B007/00

CPC classification number: H04W52/36 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/7071 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

Abstract: A subscriber unit for controlling transmission power during the establishment of a communication channel utilizes the transmission of a short code during initial power ramp-up. The short code is a sequence which has a much shorter period than a conventional access code. The ramp-up starts from an initial power level which is quickly increased, while repeatedly transmitting the short code until a detection signal is received by the base station. The use of short codes limits power overshoot and interference.

Abstract translation: 在建立通信信道期间用于控制发射功率的用户单元在初始功率提升期间利用短码的传输。 短代码是比常规访问代码短得多的序列。 斜坡上升从快速增加的初始功率电平开始，同时重复发送短码直到基站接收到检测信号。 使用短码限制电源过冲和干扰。

公开(公告)号：US20020082052A1

公开(公告)日：2002-06-27

申请号：US10090401

申请日：2002-03-04

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk ,  Brian Kiernan

IPC: H04B001/38

CPC classification number: H04W52/343 ,  H03G11/04 ,  H04B1/707 ,  H04B2201/70706 ,  H04W52/143 ,  H04W52/225 ,  H04W52/346 ,  H04W52/367 ,  H04W88/08

Abstract: A method for operating a base station employing a CDMA technique comprises combining a plurality of spread spectrum data signals into a combined signal having a fluctuating power level corresponding to the data signals; modulating the combined signal to produce an RF signal; measuring average power of the combined signal over a selected time period; adaptively limiting the combined signal power to a calculated level based at least in part on the measured power; and transmitting the RF signal.

Abstract translation: 一种用于操作使用CDMA技术的基站的方法包括将多个扩展频谱数据信号组合成具有与数据信号对应的波动功率电平的组合信号; 调制组合信号以产生RF信号; 在所选择的时间段内测量组合信号的平均功率; 至少部分地基于测量的功率将组合的信号功率自适应地限制到计算的电平; 并发送RF信号。

公开(公告)号：US20040202262A1

公开(公告)日：2004-10-14

申请号：US10832847

申请日：2004-04-27

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Fatih M. Ozluturk

IPC: H04B007/216

CPC classification number: H04B1/708 ,  H04B1/70735 ,  H04B1/7077 ,  H04B1/7093 ,  H04B2201/7071

Abstract: A User Equipment (UE) has a circuit that performs the acquisition for the low chip rate option of the Universal Mobile Telecommunication System (UMTS) Time Division Duplex (TDD) standard as formulated by the Third Generation Partnership Project (3GPP). The present invention implements the detection of the basic SYNC code; the determination of the midamble used and the detection of the superframe timing based on SYNC code modulation sequence. This enables reading of a full Broadcast Channel (BCH) message.

Abstract translation: 用户设备（UE）具有执行由第三代合作伙伴计划（3GPP）制定的通用移动电信系统（UMTS）时分双工（TDD）标准的低码片速率选项的获取的电路。 本发明实现了基本SYNC码的检测; 使用的midamble的确定和基于SYNC码调制序列的超帧定时的检测。 这使得能够读取完整的广播信道（BCH）消息。

公开(公告)号：US20030199285A1

公开(公告)日：2003-10-23

申请号：US10400343

申请日：2003-03-26

Applicant: InterDigital Technology Corporation

Inventor： Fatih M. Ozluturk ,  Gary R. Lomp

IPC: H04Q007/20

CPC classification number: H04W52/36 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/7071 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

Abstract: A base station for controlling transmission power during the establishment of a communication channel utilizes the reception of a short code during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional access code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The power of the short code is quickly increased until the signal is detected by the base station. Once the base station detects the short code, it transmits an indication that the short code has been detected.

Abstract translation: 在建立通信信道期间用于控制发送功率的基站在初始功率提升期间利用短码的接收。 短代码是用于基站检测的序列，其具有比常规访问码短得多的周期。 斜坡上升从低于基站检测所需功率电平的功率电平开始。 短码的功率快速增加，直到基站检测到信号。 一旦基站检测到短码，它就会发送一个指示已经检测到短码。