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81. 发明授权

US6151311A Mobile station assisted timing synchronization in a CDMA communication system 有权
标题翻译： CDMA通信系统中的移动台辅助定时同步
公开(公告)号：US6151311A
公开(公告)日：2000-11-21
申请号：US238125
申请日：1999-01-27
申请人： Charles E. Wheatley, III , Edward G. Tiedemann, Jr.
发明人： Charles E. Wheatley, III , Edward G. Tiedemann, Jr.
IPC分类号： H04B7/26 , H04B1/7075 , H04B1/7077 , H04J3/06 , H04W56/00 , H04W92/20
CPC分类号： H04J3/0682 , H04B1/7075 , H04B1/70753 , H04B1/7077 , H04W56/0015 , H04W56/0045 , H04B2201/70701 , H04B2201/70702 , H04W92/20
摘要： In the present invention, the slave base station attains synchronization with the reference base station through messages transmitted from and received by a mobile station in the soft handoff region between the reference base station and the slave base station. First, the round trip delay between the mobile station and the reference base station is measured by the reference base station. Once the mobile station acquires the signal from the slave base station, it measures and reports the difference between the amount of time it takes a signal to travel from the reference base station to it and the amount of time it takes a signal to travel from the slave base station to it. The last measurement necessary is a measurement by the slave base station of the time difference between the time it received the reverse link signal from the mobile and station the time it transmitted a signal to the mobile station. A series of computations described in detail herein are performed upon the measured time values to determine the time difference between the slave base station and an adjustment of the slave base station timing is performed in accordance therewith.
摘要翻译：在本发明中，从基站通过从参考基站和从基站之间的软切换区域中由移动站发送和接收的消息与基准基站实现同步。首先，由参考基站测量移动站与参考基站之间的往返延迟。一旦移动站从从基站获取信号，它测量并报告从参考基站到其的行进信号所花费的时间量与从基准站到达的信号所需的时间量之间的差异从基站到它。最后一次测量是由从基站测量从移动站接收反向链路信号的时间与发送信号到移动台的时间之间的时间差。在测量的时间值上执行一系列计算，以确定从基站与从基站的调整之间的时间差根据其执行定时。

82. 发明授权

US6091762A Method and apparatus for quick acquisition of pilot signals using bank switching method 失效
公开(公告)号：US6091762A
公开(公告)日：2000-07-18
申请号：US955499
申请日：1997-10-22
申请人： Mark Davis , Roland Rick , Brian Banister
发明人： Mark Davis , Roland Rick , Brian Banister
IPC分类号： H04B1/7075 , H04B1/7077 , H04B1/69
CPC分类号： H04B1/70753 , H04B1/70775 , H04B2201/70701 , H04B2201/70707
摘要： When a mobile communication unit (e.g. a cellular telephone) is powered up, the unit must lock on to a local base station, or "acquire" a base station signal, to enable the user to send and receive calls. To lock on a local base station, the mobile unit must determine the delay at which the base station is sending the pseudo random (PN) code. This process is called the "acquisition." The current art of acquiring a base station involves collecting a set of samples at a particular code phase, or delay, testing the collected sample, and repeating these steps using another code phase until the correct code phase is found. The present invention discloses a method and apparatus for collecting a set of samples at a particular code phase, and simultaneously testing the collected sample and collecting the next set of samples for another code phase. Using multiple banks, the system resources such as the dwell accumulators and the DSP are used concurrently to reduce the time required to test the phase delays of the short code to lock on to a base station.

83. 发明授权

US5838721A Spread spectrum communication equipment 失效
标题翻译：扩频通信设备
公开(公告)号：US5838721A
公开(公告)日：1998-11-17
申请号：US870557
申请日：1997-06-06
申请人： Kising Chau , Yoshimi Takahashi
发明人： Kising Chau , Yoshimi Takahashi
IPC分类号： H04B1/707 , H04B1/7073 , H04B1/7075 , H04B1/709 , H04B1/7103 , H04J13/00 , H04W76/00 , H04W76/02 , H04J11/00 , H04B1/06
CPC分类号： H04B1/70753 , H04B1/707 , H04B1/709 , H04B1/70735 , H04B1/70755
摘要： A spread spectrum communication equipment comprises a correlator outputting a correlation output signal, a timing generator generating two timing signals in response to a correlation peak value, detecting circuits for detecting information of a correlation output signal based on either one of the timing signals, receiving information detected in either one of the detecting circuits and checking whether the information coincides with the ID code, a switching circuit for selecting connection or disconnection between the detecting circuits and a demodulator, and a control circuit responsive to outputs of the checking circuits for selecting connection or disconnection with the switching circuit.
摘要翻译：扩展频谱通信设备包括输出相关输出信号的相关器，响应于相关峰值产生两个定时信号的定时发生器，用于基于定时信号中的任一个检测相关输出信号的信号的检测电路，接收信息在所述检测电路中的任一个中检测到，并且检查所述信息是否与所述ID码一致，用于选择所述检测电路与解调器之间的连接或断开的切换电路以及响应于所述检查电路的输出以选择连接或与开关电路断开连接。

84. 发明授权

US5754604A Synchronization to pseudo random number sequence with sign ambiguity in communications systems 失效
标题翻译：通信系统中符号模糊的伪随机数序列同步
公开(公告)号：US5754604A
公开(公告)日：1998-05-19
申请号：US689040
申请日：1996-07-30
申请人： Gang Li , Rui Wang , Iouri Trofimov , Alexandre Chloma , Mikhail Bakouline , Vitali Kreindeline
发明人： Gang Li , Rui Wang , Iouri Trofimov , Alexandre Chloma , Mikhail Bakouline , Vitali Kreindeline
IPC分类号： H04B1/707 , H04B1/7075 , H04B7/26 , H04J13/00 , H04L7/00 , H04L7/02
CPC分类号： H04B1/70752 , H04B1/70753 , H04J13/0022
摘要： A method is disclosed for synchronizing, in the presence of sign ambiguity, to a pseudo random maximal length sequence having a characteristic polynomial of order k with a coefficients vector A given by: A=�1 a.sub.1 a.sub.2 . . . a.sub.k-1 1! where each of the coefficients a.sub.1 to a.sub.k-1 is 1 for an intermediate tap location and otherwise is 0. A received symbol sequence is supplied to and shifted through a K=k+1 stage shift register with P intermediate taps in positions determined by a coefficients vector A.sub.in given by: A.sub.in =�1 a.sub.1 (a.sub.1 .sym.a.sub.2) (a.sub.2 .sym.a.sub.3) . . . (a.sub.k-2 .sym.a.sub.k-1) a.sub.k-1 1! where a.sub.1 and a.sub.k-1 are the inverse of a.sub.1 and a.sub.k-1 respectively and .sym. denotes a modulo-2 sum, whereby the shift register has P intermediate taps where P is a positive integer less than K. A respective correlation signal is recursively added at an input for the received symbol sequence and at each intermediate tap. Each correlation signal is produced by correlating the P+1 signals from said input, intermediate taps, and output other than the signal to which the respective correlation signal is added. The invention is particularly applicable to pilot synchronization in CDMA terminals.
摘要翻译：公开了一种用于在符号歧义存在的情况下同步具有具有系数向量A的特征多项式的伪随机最大长度序列的方法，该系数向量A由下式给出：A = [a1a a2。。。 ak-1 1]其中，对于中间抽头位置，系数a1至ak-1中的每一个为1，否则为0.接收到的符号序列被提供给并通过具有P个中间抽头的K = k + 1级移位寄存器在由Ain = [1 + E，ovs a + EE 1（a1（+）a2）（a2（+）a3）给出的系数矢量Ain确定的位置。。。（ak-2（+）ak-1）+ E，ovs a + EE k-1 1]其中+ E，ovs a + EE 1和+ E，ov a + EE k-1是a1和ak的倒数 -1，（+）表示模2和，由此移位寄存器具有P个中间抽头，其中P是小于K的正整数。相应的相关信号在接收符号序列的输入处和每个相关信号递归地相加中间水龙头每个相关信号是通过将来自所述输入的P + 1信号，中间抽头和除了相关相关信号所添加的信号之外的输出相关而产生的。本发明特别适用于CDMA终端的导频同步。

85. 发明授权

US5627835A Artificial window size interrupt reduction system for CDMA receiver 失效
标题翻译： CDMA接收机的人造窗口大小中断减少系统
公开(公告)号：US5627835A
公开(公告)日：1997-05-06
申请号：US416053
申请日：1995-04-04
申请人： Robert C. Witter
发明人： Robert C. Witter
IPC分类号： H04B1/7075 , H04B1/76
CPC分类号： H04B1/70753 , H04B1/70754 , H04B2201/70701
摘要： A method and an apparatus for searching code division multiple access pilot signal energies includes limiting a pilot signal window size above a lower limit and only analyzing search result data corresponding to an instructed pilot signal window size. A central processing unit instructs a searcher receiver within a mobile station modem application specific integrated circuit to search for pilot signal energies within an instructed pilot signal search window unless the instructed pilot signal window size is smaller than a pilot signal window size lower limit. In such a case, the pilot signal search window size is artificially designated as the pilot signal window size lower limit to prevent excessive search completion interrupts from over utilizing central processing unit resources. The central processing unit analyzes only the middle search results corresponding to the pilot signal window size as instructed from the base station to maintain the ability of effectively searching pilot signal window sizes smaller than the pilot signal window size lower limit.
摘要翻译：用于搜索码分多址导频信号能量的方法和装置包括将导频信号窗口大小限制在低于下限，并且仅分析与指示的导频信号窗口大小相对应的搜索结果数据。中央处理单元指示移动台调制解调器专用集成电路内的搜索者接收机在指示的导频信号搜索窗口内搜索导频信号能量，除非所指示的导频信号窗口尺寸小于导频信号窗口大小下限。在这种情况下，导频信号搜索窗口大小被人为地指定为导频信号窗口大小下限，以防止利用中央处理单元资源的过度的搜索完成中断。中央处理单元仅从根据指示的基站分析对应于导频信号窗口大小的中间搜索结果，以保持有效搜索小于导频信号窗口大小下限的导频信号窗口尺寸的能力。

86. 发明授权

US09564963B2 Automatic power control system for a code division multiple access (CDMA) communications system 有权
标题翻译：用于码分多址（CDMA）通信系统的自动功率控制系统
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。

87. 发明授权

US08737363B2 Code division multiple access (CDMA) communication system 有权
标题翻译：码分多址（CDMA）通信系统
公开(公告)号：US08737363B2
公开(公告)日：2014-05-27
申请号：US13041745
申请日：2011-03-07
申请人： Fatih M. Ozluturk , Alexander M. Jacques , Gary R. Lomp , John Kowalski
发明人： Fatih M. Ozluturk , Alexander M. Jacques , Gary R. Lomp , John Kowalski
IPC分类号： H04B7/216
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 subscriber unit for use in a multiple access spread-spectrum communication system includes a spread spectrum radio interface, responsive to a rate function signal from a base station, and first and second despreaders. The base station assigns the rate function spread-spectrum message channels and the first despreader recovers and modifies an information signal one of the spread spectrum message channels. The information channel mode is then modified for processing by the second despreader, with the second despreader supporting a different information signal rate. The subscriber unit has a capability of communicating with a dynamically changing a transmission rate of an information signal which includes multiple spread spectrum message channels. The system includes a closed loop power control system for maintaining a minimum system transmit power level for a radio carrier station and the subscriber units, and system capacity management for maintaining a maximum number of active subscriber units for improved system performance.
摘要翻译：用于多址扩频通信系统的用户单元包括响应于来自基站的速率函数信号的扩频无线电接口以及第一和第二解扩器。基站分配速率函数扩频消息信道，第一解扩器恢复扩频信息信道之一的信息信号。然后，信息信道模式被修改用于由第二解扩器进行处理，第二解扩器支持不同的信息信号速率。用户单元具有与动态地改变包括多个扩频消息信道的信息信号的传输速率进行通信的能力。该系统包括用于维持无线电载波台和用户单元的最小系统发射功率电平的闭环功率控制系统和用于维持最大数量的活动用户单元以提高系统性能的系统容量管理。

88. 发明授权

US07983320B2 Ultrawide-band communication system and method 有权
标题翻译：超宽带通信系统和方法
公开(公告)号：US07983320B2
公开(公告)日：2011-07-19
申请号：US10784747
申请日：2004-02-24
申请人： Larry W. Fullerton , Ivan A. Cowie
发明人： Larry W. Fullerton , Ivan A. Cowie
IPC分类号： H04B1/69
CPC分类号： H04B1/71637 , H04B1/69 , H04B1/707 , H04B1/70753 , H04B1/708 , H04B1/71632 , H04B1/71635 , H04B1/7176 , H04B1/7183 , H04B14/026 , H04B2001/6908 , H04B2201/70707 , H04L27/2601 , H04L27/2602
摘要： An impulse radio communications system using one or more subcarriers to communicate information from an impulse radio transmitter to an impulse radio receiver. The impulse radio communication system is an ultrawide-band time domain system. The use of subcarriers provides impulse radio transmissions added channelization, smoothing and fidelity. Subcarriers of different frequencies or waveforms can be used to add channelization of impulse radio signals. Thus, an impulse radio link can communicate many independent channels simultaneously by employing different subcarriers for each channel. The impulse radio uses modulated subcarrier(s) for time positioning a periodic timing signal or a coded timing signal. Alternatively, the coded timing signal can be summed or mixed with the modulated subcarrier(s) and the resultant signal is used to time modulate the periodic timing signal. Direct digital modulation of data is another form of subcarrier modulation for impulse radio signals. Direct digital modulation can be used alone to time modulate the periodic timing signal or the direct digitally modulated the periodic timing signal can be further modulated with one or more modulated subcarrier signals. Linearization of a time modulator permits the impulse radio transmitter and receiver to generate time delays having the necessary accuracy for impulse radio communications.
摘要翻译：一种使用一个或多个子载波将脉冲无线电发射机的信息传送到脉冲无线电接收机的脉冲无线电通信系统。脉冲无线电通信系统是一个超宽带时域系统。使用副载波提供脉冲无线电传输，增加信道化，平滑和保真度。可以使用不同频率或波形的子载波来增加脉冲无线电信号的信道化。因此，脉冲无线电链路可以通过为每个信道采用不同的子载波来同时传送许多独立信道。脉冲无线电使用调制子载波来定时周期性定时信号或编码定时信号。或者，编码的定时信号可以与调制的子载波相加或混合，并且所得到的信号用于时间调制周期性定时信号。数据的直接数字调制是脉冲无线电信号的另一种形式的子载波调制。可以单独使用直接数字调制来对周期性定时信号进行时间调制，或者直接数字调制，可以用一个或多个调制子载波信号进一步调制周期性定时信号。时间调制器的线性化允许脉冲无线电发射机和接收机产生具有脉冲无线电通信必要精度的时间延迟。

89. 发明授权

US07903613B2 Code division multiple access (CDMA) communication system 有权
标题翻译：码分多址（CDMA）通信系统
公开(公告)号：US07903613B2
公开(公告)日：2011-03-08
申请号：US10857463
申请日：2004-05-28
申请人： Fatih M. Ozluturk , Alexander Jacques , Gary R. Lomp , John Kowalski
发明人： Fatih M. Ozluturk , Alexander Jacques , Gary R. Lomp , John Kowalski
IPC分类号： H04B7/216
CPC分类号： H04W52/322 , H04B1/707 , H04B1/7075 , H04B1/70753 , H04B1/70754 , H04B1/70755 , H04B1/70758 , H04B1/708 , H04B1/7085 , H04B1/7093 , H04B1/7103 , H04B1/7115 , H04B1/712 , H04B1/7183 , H04B7/2637 , H04B7/264 , H04B2201/70701 , H04B2201/70702 , H04B2201/7071 , H04J13/004 , H04J13/0077 , H04J13/10 , H04J2013/0037 , H04L1/004 , H04L1/0059 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04L2027/003 , H04L2027/0053 , H04W52/08 , H04W52/146 , H04W52/24 , H04W52/241 , H04W52/245 , H04W52/247 , H04W52/26 , H04W52/325 , H04W52/343 , H04W52/346 , H04W52/36 , H04W52/44 , H04W52/50 , H04W52/52 , H04W52/54 , H04W52/60
摘要： A subscriber unit for use in a multiple access spread-spectrum communication system includes a spread spectrum radio interface, responsive to a rate function signal from a base station, and first and second despreaders. The base station assigns the rate function spread-spectrum message channels and the first despreader recovers and modifies an information signal one of the spread spectrum message channels. The information channel mode is then modified for processing by the second despreader, with the second despreader supporting a different information signal rate. The subscriber unit has a capability of communicating with a dynamically changing a transmission rate of an information signal which includes multiple spread spectrum message channels. The system includes a closed loop power control system for maintaining a minimum system transmit power level for a radio carrier station and the subscriber units, and system capacity management for maintaining a maximum number of active subscriber units for improved system performance.
摘要翻译：用于多址扩频通信系统的用户单元包括响应于来自基站的速率函数信号的扩频无线电接口以及第一和第二解扩器。基站分配速率函数扩频消息信道，第一解扩器恢复扩频信息信道之一的信息信号。然后，信息信道模式被修改用于由第二解扩器进行处理，第二解扩器支持不同的信息信号速率。用户单元具有与动态地改变包括多个扩频消息信道的信息信号的传输速率进行通信的能力。该系统包括用于维持无线电载波台和用户单元的最小系统发射功率电平的闭环功率控制系统和用于维持最大数量的活动用户单元以提高系统性能的系统容量管理。

90. 发明申请

US20100157950A1 SYSTEM FOR USING RAPID ACQUISITION SPREADING CODES FOR SPREAD-SPECTRUM COMMUNICATIONS 审中-公开
标题翻译：用于频谱通信的快速采集扩展码系统
公开(公告)号：US20100157950A1
公开(公告)日：2010-06-24
申请号：US12715709
申请日：2010-03-02
申请人： Fatih M. Ozluturk , Gary R. Lomp
发明人： Fatih M. Ozluturk , Gary R. Lomp
IPC分类号： H04W72/04
CPC分类号： G06F13/374 , H03H17/0226 , H03H17/06 , H03H21/0018 , H03H2218/06 , H04B1/7075 , H04B1/70752 , H04B1/70753 , H04B1/70755 , H04B1/70758 , H04B1/708 , H04B1/7085 , H04B1/7093 , H04B1/7115 , H04B1/712 , H04B7/2628 , H04B7/2637 , H04B7/264 , H04B2201/70701 , H04B2201/70702 , H04B2201/70703 , H04B2201/70707 , H04B2201/7071 , H04J13/004 , H04J13/10 , H04J13/107 , H04L1/004 , H04L5/1446 , H04L25/0212 , H04L27/206 , H04L27/2332 , H04L2027/003 , H04L2027/0053 , H04W52/08 , H04W52/146 , H04W52/24 , H04W52/26 , H04W52/322 , H04W52/325 , H04W52/343 , H04W52/36 , H04W52/367 , H04W52/44 , H04W52/50 , H04W52/52 , H04W52/54 , H04W52/60 , Y02D10/14
摘要： A system for rapidly acquiring a spreading code, used in a code division multiple access (CDMA) system, comprises a generator for generating a first long code and a second long code, with each long code having a length of N chips. The first long code is different from the second long code. A transmitter transmits the first long code and the second long code at a first phase angle and at a second phase angle, respectively, on a carrier signal over a communications channel using radio waves. The first long code and the second long code may be transmitted at an in-phase (I) angle and at a quadrature-phase (Q) angle, respectively, on the carrier signal. From the communications channel, an I acquisition circuit and a Q acquisition circuit may acquire, in parallel, the first long code and the second long code from the I angle and the Q angle, respectively, of the carrier signal by searching, in parallel, N/2 chips of the first long code and the second long code.
摘要翻译：用于在码分多址（CDMA）系统中使用的用于快速获取扩展码的系统包括用于产生第一长码和第二长码的发生器，每个长码具有N个码片的长度。第一个长代码与第二个长代码不同。发射机通过使用无线电波的通信信道上的载波信号分别以第一相位角和第二相位角发送第一长码和第二长码。第一长码和第二长码可以分别在载波信号上以同相（I）角度和正交相位（Q）角发射。从通信信道，I采集电路和Q采集电路可以并行地通过并行地搜索载波信号的I角和Q角的第一长码和第二长码，第一长码的N / 2码片和第二长码。

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