公开(公告)号：US06788662B2

公开(公告)日：2004-09-07

申请号：US09789830

申请日：2001-02-21

申请人： Faith M. Ozluturk ,  Gary R. Lomp ,  John Kowalski

发明人： Faith M. Ozluturk ,  Gary R. Lomp ,  John Kowalski

IPC分类号： H04B7216

CPC分类号： H04W52/322 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/7093 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2637 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/16 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/08 ,  H04W52/146 ,  H04W52/24 ,  H04W52/26 ,  H04W52/325 ,  H04W52/343 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60

摘要： A code-division-multiple-access (CDMA) system employing spread-spectrum modulation. The CDMA system has a base station (BS), and a plurality of subscriber units. The signals transmitted between the base station and subscriber unit use spread-spectrum modulation. The improvement method for adaptive reverse power control (APC) from a subscriber unit (SU) to a base station (BS), comprises the steps of sending from the subscriber unit, using spread-spectrum modulation, a SU-spreading code on a reverse channel. The base station despreads the SU-spreading code on the reverse channel as a despread signal, determines a first power level Pd which includes power of the despread signal plus noise and a second power level PN, which includes despread-noise power. The base station determines a first error signal e1, from the first power level Pd, the second power level PN, and a required signal-to-noise ratio SNRREQ for service type, and a second error signal e2, from a measure of total received power Prt at the base station, and an automatic gain control (AGC) set point Po. The base station forms a combined error signal from the first error signal e1, the second error signal e2, a first weight a1 and a second weight a2, and hard limits the combined error signal to form a single APC bit. The APC bit is transmitted to the subscriber unit. In response to the APC bit, the subscriber adjusts transmitter power to the base station.

摘要翻译： 采用扩频调制的码分多址（CDMA）系统。 CDMA系统具有基站（BS）和多个用户单元。 在基站和用户单元之间传输的信号使用扩频调制。 从用户单元（SU）到基站（BS）的自适应反向功率控制（APC）的改进方法包括以下步骤：使用扩展频谱调制从用户单元发送SU扩频码 渠道。 基站将反向信道上的SU扩频码解扩展为解扩信号，确定包括解扩信号加噪声功率的第一功率电平Pd和包括解扩噪声功率的第二功率电平PN。 基站从第一功率电平Pd，第二功率电平PN和用于服务类型的所需信噪比SNRREQ和第二误差信号e2根据接收到的总数量度量确定第一误差信号e1 基站的功率Prt和自动增益控制（AGC）设定点Po。 基站形成来自第一误差信号e1，第二误差信号e2，第一权重a1和第二权重a2的组合误差信号，并且硬限制组合误差信号以形成单个APC比特。 APC位被发送到用户单元。 响应于APC位，用户调整到基站的发射机功率。

公开(公告)号：US09564963B2

公开(公告)日：2017-02-07

申请号：US12340939

申请日：2008-12-22

申请人： Gary R. Lomp ,  Faith M. Ozluturk ,  John Kowalski

发明人： Gary R. Lomp ,  Faith M. Ozluturk ,  John Kowalski

IPC分类号： H04L27/00 ,  H04B7/26 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04J13/00 ,  H04J13/10 ,  H04L25/02 ,  H04L27/20 ,  H04L27/233 ,  H04W52/04 ,  H04W52/08 ,  H04W52/14 ,  H04W52/24 ,  H04W52/32 ,  H04W52/34 ,  H04W52/36 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  G06F13/374 ,  H03H17/02 ,  H04L5/14 ,  H04N1/00 ,  H04N1/333 ,  H04B1/7115 ,  H04B1/712 ,  H04J13/12 ,  H04L1/00 ,  H04W52/26 ,  H04W52/44 ,  H04W52/60 ,  H03H17/06 ,  H04B1/7077 ,  H04J13/16

CPC分类号： H04B7/2637 ,  G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/004 ,  H04J13/0048 ,  H04J13/0077 ,  H04J13/10 ,  H04J13/107 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60 ,  Y02D10/14

摘要： A receiver receives signals and noise over a frequency spectrum of a desired received signal. The desired received signal is spread using code division multiple access. The received signals and noise are demodulated to produce a demodulated signal. The demodulated signal is despread using a code uncorrelated with a code associated with the desired received signal. A power level of the despread demodulated signal is measured as an estimate of the noise level of the frequency spectrum.

摘要翻译： 接收机通过所需接收信号的频谱接收信号和噪声。 期望的接收信号使用码分多址进行传播。 接收的信号和噪声被解调以产生解调信号。 使用与所需接收信号相关联的代码不相关的代码来解调解调信号。 解扩解调信号的功率电平被测量为频谱的噪声电平的估计。

公开(公告)号：US06940840B2

公开(公告)日：2005-09-06

申请号：US09791026

申请日：2001-02-21

申请人： Faith M. Ozluturk ,  Gary R. Lomp ,  John Kowalski

发明人： Faith M. Ozluturk ,  Gary R. Lomp ,  John Kowalski

IPC分类号： G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00 ,  H04J13/04 ,  H04L1/00 ,  H04L5/14 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04N1/333 ,  H04B7/216

CPC分类号： G06F13/374 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/2628 ,  H04B7/2637 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70707 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04J2013/0037 ,  H04L1/0001 ,  H04L1/004 ,  H04L1/0042 ,  H04L1/0047 ,  H04L1/0054 ,  H04L1/0059 ,  H04L5/1446 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04N1/00912 ,  H04N1/3333 ,  H04N2201/3335 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/241 ,  H04W52/245 ,  H04W52/247 ,  H04W52/26 ,  H04W52/262 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/362 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/54 ,  H04W52/60

摘要： A code-division-multiple-access (CDMA) system employing spread-spectrum modulation. The CDMA system has a base station (BS), and a plurality of subscriber units. The signals transmitted between the base station and subscriber unit use spread-spectrum modulation. The improvement method for adaptive reverse power control (APC) from a subscriber unit (SU) to a base station (BS), comprises the steps of sending from the subscriber unit, using spread-spectrum modulation, a SU-spreading code on a reverse channel. The base station despreads the SU-spreading code on the reverse channel as a despread signal, determines a first power level Pd which includes power of the despread signal plus noise and a second power level PN, which includes despread-noise power. The base station determines a first error signal e1, from the first power level Pd, the second power level PN, and a required signal-to-noise ratio SNRREQ for service type, and a second error signal e2, from a measure of total received power Prt at the base station, and an automatic gain control (AGC) set point Po. The base station forms a combined error signal from the first error signal e1, the second error signal e2, a first weight a1, and a second weight a2, and hard limits the combined error signal to form a single APC bit. The APC bit is transmitted to the subscriber unit. In response to the APC bit, the subscriber adjusts transmitter power to the base station.

摘要翻译： 采用扩频调制的码分多址（CDMA）系统。 CDMA系统具有基站（BS）和多个用户单元。 在基站和用户单元之间传输的信号使用扩频调制。 从用户单元（SU）到基站（BS）的自适应反向功率控制（APC）的改进方法包括以下步骤：使用扩展频谱调制从用户单元发送SU扩频码 渠道。 基站将反向信道上的SU扩展码解扩展为解扩信号，确定包括解扩信号加噪声的功率的第一功率电平P＆lt; D＆gt;和第二功率电平P SUB N＆lt; N＆gt;，其包括解扩噪声功率。 基站从第一功率电平P SUB D＆gt;，第二功率电平P SUB> N＆gt;确定第一误差信号e 1， 对于服务类型的信噪比SNR＆lt; REQ＆lt;＆lt;＆lt;＆lt;＆lt;＆lt;＆lt;＆lt;＆lt;＆lt; 在基站处，以及自动增益控制（AGC）设定点P 。 基站形成来自第一误差信号e 1 1，第二误差信号e 2 2，第一重量α1，N 2的组合误差信号， 和第二重量2 <2>，并且硬限制组合误差信号以形成单个APC位。 APC位被发送到用户单元。 响应于APC位，用户调整到基站的发射机功率。

公开(公告)号：US5841768A

公开(公告)日：1998-11-24

申请号：US670162

申请日：1996-06-27

申请人： Faith M. Ozluturk ,  Gary R. Lomp

发明人： Faith M. Ozluturk ,  Gary R. Lomp

IPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04W52/36 ,  H04W52/50 ,  H04W52/60

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

摘要： A system and method of controlling transmission power during the establishment of a channel in a CDMA communication system utilize the transmission of a short code from a subscriber unit to a base station 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 spreading code. The ramp-up starts from a power level that is guaranteed to be lower than the required power level for detection by the base station. The subscriber unit quickly increases transmission power while repeatedly transmitting the short code until the signal is detected by the base station. Once the base station detects the short code, it sends an indication to the subscriber unit to cease increasing transmission power. The use of short codes limits power overshoot and interference to other subscriber stations and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

公开(公告)号：US06798759B2

公开(公告)日：2004-09-28

申请号：US10080835

申请日：2002-02-22

申请人： Faith M. Ozluturk

发明人： Faith M. Ozluturk

IPC分类号： H04B7216

CPC分类号： H04B7/2628 ,  H04B1/707 ,  H04B2201/70703 ,  H04J3/16 ,  H04J13/16 ,  H04L5/0053 ,  H04Q11/0435 ,  H04Q2213/1307 ,  H04Q2213/13098 ,  H04Q2213/13174 ,  H04Q2213/13204 ,  H04Q2213/13208 ,  H04Q2213/13209 ,  H04Q2213/13294 ,  H04Q2213/13332 ,  H04W24/00 ,  H04W28/22 ,  H04W36/06 ,  H04W52/267 ,  H04W52/42 ,  H04W72/0406 ,  H04W72/044 ,  H04W72/0453 ,  H04W76/10 ,  H04W76/30 ,  H04W84/14 ,  H04W88/02 ,  H04W88/08

摘要： A method for using a wireless digital base station to receive, process and transmit a plurality of communications having independent data rates establishing a first communication channel having a first data communication rate to support a first communication; determining the data rate required to support the first communication; selecting one or more transmission channels, from a plurality of available transmission channels, required to support said required data rate; and transmitting the first communication using one or more selected transmission channels. The plurality of available transmission channels includes at least one B or D channel.

公开(公告)号：US5842114A

公开(公告)日：1998-11-24

申请号：US797989

申请日：1997-02-12

申请人： Faith M. Ozluturk

发明人： Faith M. Ozluturk

IPC分类号： H04B7/26 ,  H04B7/005

CPC分类号： H04W52/343 ,  H04W52/24 ,  H04W52/246 ,  H04W52/32 ,  H04W52/346 ,  Y02B60/50

摘要： A system which dynamically adjusts the power of signals transmitted from a wireless base station over global channels to minimize spillover to other communication cells monitors the total transmit power of the base station and dynamically adjusts the global channel transmit power as a function of the total transmit power of the base station as measured at the base station.

公开(公告)号：US06904292B2

公开(公告)日：2005-06-07

申请号：US10090496

申请日：2002-03-04

申请人： Faith M. Ozluturk ,  Brian Kiernan

发明人： Faith M. Ozluturk ,  Brian Kiernan

IPC分类号： H03G3/20 ,  H03G11/04 ,  H04B1/04 ,  H04B1/707 ,  H04B7/005 ,  H04B7/216 ,  H04W52/22 ,  H04W52/34 ,  H04B7/00 ,  H04Q7/20

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

摘要： A base station for transmitting signals employing a CDMA technique where a plurality of spread spectrum data signals are combined. A characteristic of the output of the combining for a given time period is measured. An output of the combining is adaptively linked responsive, at least partially, to an output of the measuring.

摘要翻译： 一种用于发送采用CDMA技术的信号的基站，其中多个扩频数据信号被组合。 测量给定时间段内的组合输出的特性。 组合的输出至少部分地响应于测量的输出而自适应地连接。

公开(公告)号：US06414951B1

公开(公告)日：2002-07-02

申请号：US09415321

申请日：1999-10-08

申请人： Faith M. Ozluturk ,  Alexander M. Jacques

发明人： Faith M. Ozluturk ,  Alexander M. Jacques

IPC分类号： H04J1304

CPC分类号： H04B1/71 ,  H04B1/70735 ,  H04B1/7101 ,  H04B1/7115

摘要： 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.

摘要翻译： 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：US06760365B2

公开(公告)日：2004-07-06

申请号：US10267512

申请日：2002-10-09

申请人： Alpaslan Demir ,  Faith M. Ozluturk

发明人： Alpaslan Demir ,  Faith M. Ozluturk

IPC分类号： H04B1707

CPC分类号： H04B1/708 ,  H04B1/70735 ,  H04B1/7077 ,  H04B1/7093 ,  H04B2201/7071

摘要： 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.

公开(公告)号：US06741584B2

公开(公告)日：2004-05-25

申请号：US10187484

申请日：2002-07-01

申请人： Faith M. Ozluturk ,  Alexander M. Jacques

发明人： Faith M. Ozluturk ,  Alexander M. Jacques

IPC分类号： H04B7216

CPC分类号： H04B1/71 ,  H04B1/70735 ,  H04B1/7101 ,  H04B1/7115

摘要： 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.

摘要翻译： 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。