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公开(公告)号：US08634288B2
公开(公告)日：2014-01-21
申请号：US13150565
申请日：2011-06-01
IPC分类号： H04J11/00
CPC分类号： H04W74/0833 , H04L27/265 , H04L27/2655
摘要： Methods and devices for extracting a RACH preamble using as input a number of Fast Fourier Transformed symbols, in order to extract a random access channel (RACH) preamble from a signal received in a base station from a user device, in a radio communication system, are provided. An initial cyclic prefix (symbol CP) is removed prior to performing FFT on symbols. After (1) selecting from the FFT of a symbol frequencies corresponding to the RACH band all other non-RACH frequency bins having been set to zero, (2) shifting the signal to baseband and (3) performing a FFT on the baseband signal, a phase adjustment is performed to compensate for group delays due to symbol CP gaps occurring when generating the baseband signal, the phase adjustment being determined individually for each symbol.
摘要翻译： 用于提取RACH前同步码的方法和装置，以便使用多个快速傅立叶变换符号来输入，以便在无线电通信系统中从用户装置在基站接收的信号中提取随机接入信道（RACH）前导码， 被提供。 在对符号执行FFT之前，删除初始循环前缀（符号CP）。 在（1）从FFT中选择与RACH频带对应的符号频率，所有其他非RACH频率仓已被设置为零，（2）将信号移位到基带，和（3）对基带信号执行FFT， 执行相位调整以补偿由于在生成基带信号时发生的符号CP间隙引起的组延迟，对于每个符号单独确定相位调整。
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公开(公告)号：US08588334B2
公开(公告)日：2013-11-19
申请号：US13188904
申请日：2011-07-22
IPC分类号： H04L27/00
摘要： A wireless communication system that includes a robust transmitter array. The robust transmitter array includes an antenna array system with at least one column, at least one antenna element, and at least one polarization, a plurality of transmitter devices to transmit analog voice/data signals through the antenna array system, and a signal processor. The signal processor modifies two or more input signals in the event of a transmitter device failure such that substantially similar amounts of each of the two or more input signals are output from the transmitter system to the antenna array system, and wherein substantially less transmitted signal power is lost than in the case wherein the signal processor does not modify the two or more input signals in the event of a transmitter failure.
摘要翻译： 一种包括鲁棒发射机阵列的无线通信系统。 鲁棒的发射机阵列包括具有至少一列，至少一个天线元件和至少一个极化的天线阵列系统，用于通过天线阵列系统传输模拟语音/数据信号的多个发射机设备，以及信号处理器。 在发射机设备故障的情况下，信号处理器修改两个或更多个输入信号，使得两个或多个输入信号中的每一个的基本相似的量从发射机系统输出到天线阵列系统，并且其中基本上较少的发射信号功率 在信号处理器在发射机故障的情况下不修改两个或更多个输入信号的情况下丢失。
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