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公开(公告)号：US5280637A
公开(公告)日：1994-01-18
申请号：US761527
申请日：1991-09-18
CPC分类号： H04B7/0874 , H04B7/0871 , H04B7/0802 , H04B7/0857
摘要： A phase combining method and apparatus for use in a diversity reception radiotelephone is described. The phase combining method and apparatus is a hybrid diversity technique which combines elements of maximal ratio combining (MRC) and level comparison selection diversity, which results in a simple and effective implementation of a diversity receiver with superior performance. The diversity receiver demodulates the received signals, extracts the phase, forming two phase signals. Then, the two phase signals are combined to form a third phase signal. One of the three phase signals is selected to be used for interpretation of a symbol in the Quadrature Phase Shift Keying (QPSK) constellation. The selection process is based on the received signal strength of the received signals.
摘要翻译： 描述了用于分集接收无线电话机的相位组合方法和装置。 相位组合方法和装置是组合最大比组合（MRC）和电平比较选择分集的元件的混合分集技术，其导致具有优异性能的分集接收机的简单有效的实现。 分集接收机对接收到的信号进行解调，提取相位，形成两相信号。 然后，将两相信号组合形成第三相位信号。 选择三相信号中的一个用于解码正交相移键控（QPSK）星座中的符号。 选择处理基于接收信号的接收信号强度。
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公开(公告)号：US20140198757A1
公开(公告)日：2014-07-17
申请号：US14216912
申请日：2014-03-17
IPC分类号： H04W56/00
CPC分类号： H04W56/0045 , H04W56/003
摘要： A method that implements a timing advance for an uplink communication from a user equipment (UE) comprises: selecting at least one subframe; reducing a duration of at least one selected symbol of each of the at least one subframe to generate at least one reduced duration subframe; replacing a remaining portion of payload data of each of the at least one selected symbol with a pre-selected replacement value; by-passing each of the at least one selected symbol during pre-transmission processing of the at least one reduced duration subframe; processing any remaining symbols of the at least one reduced duration subframe, such that a processing time of the remaining symbols of the at least one reduced duration subframe is reduced by at least the value of the timing advance; and transmitting the at least one reduced duration subframe via the uplink communication to the base station.
摘要翻译： 实现来自用户设备（UE）的上行链路通信的定时提前的方法包括：选择至少一个子帧; 减少所述至少一个子帧中的每一个的至少一个所选符号的持续时间以生成至少一个缩短的持续时间子帧; 用预选择的替换值替换所述至少一个所选符号中的每一个的有效载荷数据的剩余部分; 在所述至少一个缩短持续时间子帧的预传输处理期间，旁路所述至少一个所选符号中的每一个; 处理所述至少一个减少持续时间子帧的任何剩余符号，使得所述至少一个减少持续时间子帧的剩余符号的处理时间至少减少所述定时提前的值; 以及经由所述上行链路通信将所述至少一个缩短持续时间子帧发送到所述基站。
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3.发明授权公开(公告)号：US07428262B2
公开(公告)日：2008-09-23
申请号：US10640487
申请日：2003-08-13
IPC分类号： H04B1/707
CPC分类号： H04L25/0228 , H04B1/7115 , H04B1/7117 , H04L1/20
摘要： A method and apparatus for channel estimation in a rake receiver of a CDMA communication system operates with a finite-impulse-response channel estimation filter with L taps and having a fixed delay. A pilot sequence of a received sequence of data from a channel of the communication system on the rake receiver is input. A quality of the channel of the communication system is determined using noise or Doppler measurements. These measurements are used in adjusting a bandwidth of the filter to accommodate the channel quality while keeping the fixed delay, which minimizes the delay buffer size. The filter is then used to operate on the received sequence of data to provide coherent modulation.
摘要翻译： 用于CDMA通信系统的耙式接收机中的信道估计的方法和装置利用具有L个抽头并具有固定延迟的有限脉冲响应信道估计滤波器来操作。 输入来自rake接收机上的通信系统的信道的接收的数据序列的导频序列。 使用噪声或多普勒测量来确定通信系统的信道的质量。 这些测量用于调整滤波器的带宽以适应信道质量，同时保持固定的延迟，这使延迟缓冲器大小最小化。 然后使用滤波器对所接收的数据序列进行操作以提供相干调制。
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公开(公告)号：US08718102B2
公开(公告)日：2014-05-06
申请号：US13326550
申请日：2011-12-15
CPC分类号： H04W56/0045 , H04W56/003
摘要： A method that implements a timing advance for an uplink communication from a user equipment (UE) comprises: selecting at least one subframe; reducing a duration of at least one selected symbol of each of the at least one subframe to generate at least one reduced duration subframe; replacing a remaining portion of payload data of each of the at least one selected symbol with a pre-selected replacement value; by-passing each of the at least one selected symbol during pre-transmission processing of the at least one reduced duration subframe; processing any remaining symbols of the at least one reduced duration subframe, such that a processing time of the remaining symbols of the at least one reduced duration subframe is reduced by at least the value of the timing advance; and transmitting the at least one reduced duration subframe via the uplink communication to the base station.
摘要翻译： 实现来自用户设备（UE）的上行链路通信的定时提前的方法包括：选择至少一个子帧; 减少所述至少一个子帧中的每一个的至少一个所选符号的持续时间以生成至少一个缩短的持续时间子帧; 用预选择的替换值替换所述至少一个所选符号中的每一个的有效载荷数据的剩余部分; 在所述至少一个缩短持续时间子帧的预传输处理期间，旁路所述至少一个所选符号中的每一个; 处理所述至少一个减少持续时间子帧的任何剩余符号，使得所述至少一个减少持续时间子帧的剩余符号的处理时间至少减少所述定时提前的值; 以及经由所述上行链路通信将所述至少一个缩短持续时间子帧发送到所述基站。
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公开(公告)号：US20130156018A1
公开(公告)日：2013-06-20
申请号：US13326550
申请日：2011-12-15
IPC分类号： H04W92/00
CPC分类号： H04W56/0045 , H04W56/003
摘要： A method that implements a timing advance for an uplink communication from a user equipment (UE) comprises: selecting at least one subframe; reducing a duration of at least one selected symbol of each of the at least one subframe to generate at least one reduced duration subframe; replacing a remaining portion of payload data of each of the at least one selected symbol with a pre-selected replacement value; by-passing each of the at least one selected symbol during pre-transmission processing of the at least one reduced duration subframe; processing any remaining symbols of the at least one reduced duration subframe, such that a processing time of the remaining symbols of the at least one reduced duration subframe is reduced by at least the value of the timing advance; and transmitting the at least one reduced duration subframe via the uplink communication to the base station.
摘要翻译： 实现来自用户设备（UE）的上行链路通信的定时提前的方法包括：选择至少一个子帧; 减少所述至少一个子帧中的每一个的至少一个所选符号的持续时间以生成至少一个缩短的持续时间子帧; 用预选择的替换值替换所述至少一个所选符号中的每一个的有效载荷数据的剩余部分; 在所述至少一个缩短持续时间子帧的预传输处理期间，旁路所述至少一个所选符号中的每一个; 处理所述至少一个减少持续时间子帧的任何剩余符号，使得所述至少一个减少持续时间子帧的剩余符号的处理时间至少减少所述定时提前的值; 以及经由所述上行链路通信将所述至少一个缩短持续时间子帧发送到所述基站。
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