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1. 发明授权

US07133440B1 Acquisition of a synchronous CDMA TDD QPSK waveform using variable thresholds for PN and burst synchronization 有权
标题翻译：使用PN和突发同步的可变阈值获取同步CDMA TDD QPSK波形
公开(公告)号：US07133440B1
公开(公告)日：2006-11-07
申请号：US10280167
申请日：2002-10-25
申请人： Lyman D. Horne , Delon Jones , Samuel Kingston , Steven Perkins
发明人： Lyman D. Horne , Delon Jones , Samuel Kingston , Steven Perkins
IPC分类号： H04B1/69 , H04B7/216
CPC分类号： H04B1/707 , H04B1/7075 , H04B1/7087
摘要： A method and system for open-loop acquisition of a pseudo-noise (PN) encoded QPSK burst signal is provided. The method includes the steps of determining a PN correlation accumulation (PNCA) threshold and a sync threshold. Searching for a burst signal synchronization by searching a burst preamble for a sync word exceeding the sync threshold. In response to detecting the sync word, performing a PNCA of at least 256 bits following the detected sync word and comparing the PNCA of the at least 256 bits with the PNCA threshold. The comparison further includes the step of verifying that the PNCA of the 256 bits following the detected sync word exceeds the PNCA threshold and then verifying sync word detection. Next, using the burst preamble an estimate of carrier signal frequency is determined; and using a subsequent burst preamble carrier signal frequency and carrier signal phase is determined.
摘要翻译：提供了一种用于开环获取伪噪声（PN）编码的QPSK突发信号的方法和系统。该方法包括确定PN相关累积（PNCA）阈值和同步阈值的步骤。通过搜索突发前导码来搜索超过同步阈值的同步字搜索突发信号同步。响应于检测到同步字，在检测到的同步字之后执行至少256位的PNCA，并将至少256位的PNCA与PNCA阈值进行比较。比较还包括验证检测到的同步字之后的256位的PNCA超过PNCA阈值，然后验证同步字检测的步骤。接下来，使用脉冲串前导码确定载波信号频率的估计; 并且确定使用随后的突发前同步码载波信号频率和载波信号相位。

2. 发明授权

US07272124B1 Acquisition of a synchronous CDMA TDD QPSK waveform using power and timing estimates 有权
标题翻译：使用功率和定时估计获取同步CDMA TDD QPSK波形
公开(公告)号：US07272124B1
公开(公告)日：2007-09-18
申请号：US10284536
申请日：2002-10-30
申请人： Lyman D. Horne , Brad Hansen , Delon Jones
发明人： Lyman D. Horne , Brad Hansen , Delon Jones
IPC分类号： H04B7/216
CPC分类号： H04B1/7077 , H04B1/7075 , H04B1/70755
摘要： A method and system for using power and timing estimates to acquire frame acquisition of a reverse CDMA carrier signal. The method includes providing at least one remote transceiver device acquiring a forward CDMA carrier signal, and the one remote transceiver device transmitting a reverse CDMA carrier signal modified to include a frequency associated with the forward CDMA carrier signal. A transceiver base station, in response to determining if the reverse CDMA carrier signal exceeds a reverse CDMA carrier signal threshold (RCCST), uses the frequency embedded in the modified reverse CDMA carrier signal to acquire phase of the reverse CDMA carrier signal. Achieving acquisition the transceiver base station signals a mode change to the remote transceiver. Otherwise, the transceiver base station signals the remote transceiver device to slip the reverse CDMA carrier signal a predetermined number of chips; and/or transmit the reverse CDMA carrier signal at a second power level.
摘要翻译：一种使用功率和定时估计来获取反向CDMA载波信号的帧获取的方法和系统。该方法包括提供至少一个远程收发器设备获取前向CDMA载波信号，并且一个远程收发器设备发送被修改为包括与前向CDMA载波信号相关联的频率的反向CDMA载波信号。收发机基站响应于确定反向CDMA载波信号是否超过反向CDMA载波信号阈值（RCCST），使用嵌入在修改的反向CDMA载波信号中的频率来获取反向CDMA载波信号的相位。实现采集收发基站向远程收发信机发送模式更改。否则，收发机基站向远程收发器装置发信号通知反向CDMA载波信号预定数量的芯片; 和/或以第二功率电平发送反向CDMA载波信号。

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