公开(公告)号：US20060018406A1

公开(公告)日：2006-01-26

申请号：US10532524

申请日：2003-10-03

申请人： Ernest Chen ,  Jeng-Hong Chen ,  Kenneth Shum ,  Joungheon Oh

发明人： Ernest Chen ,  Jeng-Hong Chen ,  Kenneth Shum ,  Joungheon Oh

IPC分类号： H03K9/00

CPC分类号： H04H60/07 ,  H04B7/18523 ,  H04H20/51 ,  H04H40/90 ,  H04L27/183 ,  H04L27/3488

摘要： An apparatus and method for receiving layered modulation signals is disclosed. A typical method includes receiving a layered modulation signal including an upper layer signal and a lower layer signal, demodulating and decoding the upper layer signal from the received layered modulation signal, estimating an upper layer amplitude factor and an upper layer phase factor from the received layered modulation signal. A substantially ideal upper layer signal is reconstructed from the demodulated and decoded upper layer signal including matching an ideal amplitude and an ideal phase by applying the upper layer amplitude factor and the upper layer phase factor to the reconstructed ideal upper layer signal. Finally, the reconstructed ideal upper layer signal is subtracted from the received layered modulation signal to produce the lower layer signal for processing.

公开(公告)号：US07474710B2

公开(公告)日：2009-01-06

申请号：US10532524

申请日：2003-10-03

申请人： Ernest C. Chen ,  Jeng-Hong Chen ,  Kenneth Shum ,  Joungheon Oh

发明人： Ernest C. Chen ,  Jeng-Hong Chen ,  Kenneth Shum ,  Joungheon Oh

IPC分类号： H03K9/00

CPC分类号： H04H60/07 ,  H04B7/18523 ,  H04H20/51 ,  H04H40/90 ,  H04L27/183 ,  H04L27/3488

摘要： An apparatus and method for receiving layered modulation signals is disclosed. A typical method includes receiving a layered modulation signal including an upper layer signal and a lower layer signal, demodulating and decoding the upper layer signal from the received layered modulation signal, estimating an upper layer amplitude factor and an upper layer phase factor from the received layered modulation signal. A substantially ideal upper layer signal is reconstructed from the demodulated and decoded upper layer signal including matching an ideal amplitude and an ideal phase by applying the upper layer amplitude factor and the upper layer phase factor to the reconstructed ideal upper layer signal. Finally, the reconstructed ideal upper layer signal is subtracted from the received layered modulation signal to produce the lower layer signal for processing.

摘要翻译： 公开了一种用于接收分层调制信号的装置和方法。 一种典型的方法包括接收包括上层信号和下层信号的分层调制信号，从接收到的分层调制信号中解调和解码上层信号，从接收到的分层调制信号估计上层振幅因子和上层相位因子 调制信号。 通过将上层振幅因子和上层相位因子应用于重建的理想上层信号，从解调和解码的上层信号中重构理想的上层信号，包括理想幅度和理想相位的匹配。 最后，从接收到的分层调制信号中减去重建的理想上层信号，产生下层信号进行处理。

公开(公告)号：US20060133548A1

公开(公告)日：2006-06-22

申请号：US11013360

申请日：2004-12-17

申请人： Joungheon Oh ,  Yuh-Chun Lin ,  Chia-En Wu

发明人： Joungheon Oh ,  Yuh-Chun Lin ,  Chia-En Wu

IPC分类号： H03D1/04

CPC分类号： H03D3/009

摘要： The present invention provides apparatus and method for calibrating I/Q imbalance in a direct conversion transmitter-receiver, including generating a complex sinusoidal signal with a center frequency at ωi, sending the sinusoidal signal to the receiver and using FFT to estimate the I/Q the phase φ, the gain imbalance ε, and phase imbalance θ. The input signal is calibrated according to the estimated I/Q amplitude and phase imbalance.

摘要翻译： 本发明提供了用于校准直接转换发射机 - 接收机中的I / Q不平衡的装置和方法，包括产生具有ωωi i的中心频率的复数正弦信号，将正弦信号发送到接收机， 使用FFT估计I / Q相位phi，增益不平衡ε和相位不平衡θ。 输入信号根据估计的I / Q振幅和相位不平衡进行校准。

公开(公告)号：US06756940B2

公开(公告)日：2004-06-29

申请号：US10023216

申请日：2001-12-18

申请人： Joungheon Oh ,  Wei-Chung Peng

发明人： Joungheon Oh ,  Wei-Chung Peng

IPC分类号： G01S124

CPC分类号： G01S13/878 ,  G01S15/876

摘要： Various approaches for forming more accurate location estimates are disclosed. In some approaches, a plurality of preliminary location estimates are formed based on subsets of time-of-arrival measurements. A final location estimate is then made based on the preliminary location estimates. In other approaches, a quality indicator associated with the time-of-arrival measurements is modified, and subsequently used in a location algorithm. Optionally, multiple approaches may be used together.

摘要翻译： 公开了用于形成更准确位置估计的各种方法。 在一些方法中，基于到达时间测量的子集形成多个初步位置估计。 然后根据初步位置估算值进行最终位置估算。 在其他方法中，修改与到达时间测量值相关联的质量指示符，并随后在位置算法中使用。 可选地，多个方法可以一起使用。