公开(公告)号：US20060269015A1

公开(公告)日：2006-11-30

申请号：US11439326

申请日：2006-05-23

申请人： Tingwu Wang ,  Ju Pan ,  Zhiyong Xiao ,  Yu Ting ,  Yang Yu

发明人： Tingwu Wang ,  Ju Pan ,  Zhiyong Xiao ,  Yu Ting ,  Yang Yu

IPC分类号： H04L27/22 ,  H03D1/04 ,  H04L7/00

CPC分类号： H04L27/2071 ,  H04L7/041 ,  H04L27/0014 ,  H04L27/2332 ,  H04L2027/0046

摘要： There is provided an apparatus and method for performing unique word detection and frequency offset estimation for a receiver for DPSK signals comprising in-phase I and quadrature Q components for a plurality of symbols k. The apparatus comprises: a differential detector for performing differential detection of a received signal over a given symbol span; a frequency corrector for performing an initial correction of I and Q using a previously estimated value of the frequency offset; accumulators for averaging I and Q for each symbol k over a given number K of symbols, where K is the number of symbols in the unique word to be detected; a frequency offset estimation block for calculating an estimate of the frequency offset from averaged I and averaged Q; and a unique word detection block for determining, from differentially detected I, differentially detected Q, averaged I and averaged Q, whether or not the unique word is present in a received signal.

摘要翻译： 提供了一种用于对包括用于多个符号k的同相I和正交Q分量的DPSK信号的接收机执行唯一字检测和频偏估计的装置和方法。 该装置包括：差分检测器，用于在给定的符号跨度上进行接收信号的差分检测; 频率校正器，用于使用先前估计的频率偏移值来执行I和Q的初始校正; 用于对于给定数量K个符号的每个符号k平均I和Q的累加器，其中K是要检测的唯一字中的符号数; 用于计算来自平均I和平均Q的频率偏移的估计的频率偏移估计块; 以及唯一字检测块，用于从差分检测到的I，差分检测到的Q，平均I和平均Q确定该唯一字是否存在于接收信号中。

公开(公告)号：US20060251190A1

公开(公告)日：2006-11-09

申请号：US11405748

申请日：2006-04-18

申请人： Tingwu Wang ,  Ju Pan ,  Zhiyong Xiao ,  Yu Ting ,  Yang Yu

发明人： Tingwu Wang ,  Ju Pan ,  Zhiyong Xiao ,  Yu Ting ,  Yang Yu

IPC分类号： H04L27/22

CPC分类号： H04L27/0014 ,  H04L27/2071 ,  H04L27/2273 ,  H04L2027/0053 ,  H04L2027/0065 ,  H04L2027/0067

摘要： There is provided an apparatus and method for estimating frequency offset for a receiver for DPSK signals comprising in-phase I and quadrature Q components for a plurality of symbols k. The apparatus comprises a differential detector for performing differential detection of a received signal over a symbol span of n symbols, where n is an integer greater than 1, a frequency corrector for performing an initial correction of I and Q using a previously estimated value of the frequency offset, a rotation block for rotating the phase of each symbol towards zero; and a calculator for calculating an estimate of the frequency offset by comparing the phase of each symbol with zero, the calculator being arranged to input the estimate into the frequency corrector for improving the previously estimated value of the frequency offset.

摘要翻译： 提供了一种用于估计用于多个符号k的同相I和正交Q分量的DPSK信号的接收机的频率偏移的装置和方法。 该装置包括差分检测器，用于在n个符号的符号跨度上执行接收信号的差分检测，其中n是大于1的整数;频率校正器，用于使用先前估计的值 频率偏移，用于将每个符号的相位朝向零旋转的旋转块; 以及计算器，用于通过将每个符号的相位与零进行比较来计算频率偏移的估计，所述计算器被布置为将所述估计值输入到频率校正器中，以改善先前估计的频率偏移值。