公开(公告)号：US20070002937A1

公开(公告)日：2007-01-04

申请号：US11427771

申请日：2006-06-29

申请人： SANG HYUN MIN ,  HYUNG JIN CHOI ,  JUNG SU HAN ,  JOO HYUN DO ,  TAH JOON PARK ,  KWANG MOOK LEE ,  KOON SHIK CHO ,  U SANG LEE

发明人： SANG HYUN MIN ,  HYUNG JIN CHOI ,  JUNG SU HAN ,  JOO HYUN DO ,  TAH JOON PARK ,  KWANG MOOK LEE ,  KOON SHIK CHO ,  U SANG LEE

IPC分类号： H04B1/707

CPC分类号： H04L27/2657 ,  H04B1/708 ,  H04B1/709 ,  H04L27/261 ,  H04L27/2675

摘要： The invention relates to a symbol detector for detecting symbols received in a receive modem of short-range wireless personal area network of a ZigBee system (IEEE 802.15.4). An OQPSK short-range wireless communication system according to the invention acquires frequency offset in a received signal using a symbol contained in a preamble of a packet of the signal, multi-delay-differentiates the signal by a plurality of predetermined delay times, and complex-conjugates the acquired frequency offset to eliminate the frequency offset. Then, the OQPSK short-range wireless communication system according to the invention correlates the received signal with a PN sequence delay-differentiated through the same process to detect the symbols corresponding to the received signal.

摘要翻译： 本发明涉及一种用于检测在ZigBee系统（IEEE 802.15.4）的短距离无线个域网的接收调制解调器中接收的符号的符号检测器。 根据本发明的OQPSK短距离无线通信系统使用包含在信号分组的前导码中的符号来获取接收信号中的频率偏移，将信号多延迟多个预定延迟时间，并且复数 收集频率偏移以消除频率偏移。 然后，根据本发明的OQPSK短距离无线通信系统将接收到的信号与通过相同处理延迟差分的PN序列相关，以检测对应于接收信号的符号。

公开(公告)号：US20070014384A1

公开(公告)日：2007-01-18

申请号：US11457116

申请日：2006-07-12

申请人： SANG MIN ,  TAH PARK ,  U LEE ,  KOON CHO ,  KWANG MOOK LEE

发明人： SANG MIN ,  TAH PARK ,  U LEE ,  KOON CHO ,  KWANG MOOK LEE

IPC分类号： H04L27/00

CPC分类号： H04B14/06 ,  H04W84/10

摘要： The present invention relates to a multiple differential demodulator using a weighting value. The multiple differential demodulator according to the present invention includes a weighting value generator for integrating a real part and an imaginary part of a value acquired by multiplying one of a plurality of differentiated reception signals by a conjugated value of a differentiated PN code signal corresponding to a preset symbol, and determining the greater of the integrated real and integrated imaginary parts to apply a predetermined weighting value to the greater value, where the PN code signal is differentiated in the same fashion as the differentiated reception signals.

摘要翻译： 本发明涉及使用加权值的多重差分解调器。 根据本发明的多重差分解调器包括一个加权值产生器，用于将通过将多个差分接收信号中的一个相乘而得到的值的实部和虚部进行积分，该复数值与对应于 并且确定积分的实数和积分虚部中的较大者，以将预定加权值应用于较大值，其中PN码信号以与差分接收信号相同的方式进行微分。