公开(公告)号：US20050276354A1

公开(公告)日：2005-12-15

申请号：US10867120

申请日：2004-06-14

Applicant: Szu-Lin Su ,  Shao-Ping Hung ,  Jeff Lin

Inventor： Szu-Lin Su ,  Shao-Ping Hung ,  Jeff Lin

IPC: H04L27/00 ,  H04L27/22

CPC classification number: H04L27/3863 ,  H04L27/2657 ,  H04L2027/0028 ,  H04L2027/0095

Abstract: The present invention discloses a method and apparatus of IQ imbalance compensation for a receiver. The repetitive attribute of the preamble in a signal received by the receiver is used to estimate the IQ imbalance parameters. The data carried by the preamble repeats itself every N sampling intervals. A MSE equation is derived based on assuming the ratios between any two sampling points separated by N samples are identical, and the IQ imbalance parameters can be estimated by solving the MSE equation using the LS algorithm. Consequently, the IQ mismatch offset of the signal is compensated according to the estimated parameters.

Abstract translation: 本发明公开了一种用于接收机的IQ不平衡补偿的方法和装置。 由接收机接收的信号中的前导码的重复属性用于估计IQ不平衡参数。 前导码携带的数据每N个采样间隔重复一次。 基于假设由N个样本分开的任何两个采样点之间的比率相同，导出MSE方程，并且可以通过使用LS算法求解MSE方程来估计IQ不平衡参数。 因此，根据估计的参数来补偿信号的IQ失配偏移。

公开(公告)号：US07466768B2

公开(公告)日：2008-12-16

申请号：US10867120

申请日：2004-06-14

Applicant: Szu-Lin Su ,  Shao-Ping Hung ,  Jeff Lin

Inventor： Szu-Lin Su ,  Shao-Ping Hung ,  Jeff Lin

IPC: H04B1/66 ,  H04L5/12 ,  H04L7/00

CPC classification number: H04L27/3863 ,  H04L27/2657 ,  H04L2027/0028 ,  H04L2027/0095

Abstract: The present invention discloses a method and apparatus of IQ imbalance compensation for a receiver. The repetitive attribute of the preamble in a signal received by the receiver is used to estimate the IQ imbalance parameters. The data carried by the preamble repeats itself every N sampling intervals. A MSE equation is derived based on assuming the ratios between any two sampling points separated by N samples are identical, and the IQ imbalance parameters can be estimated by solving the MSE equation using the LS algorithm. Consequently, the IQ mismatch offset of the signal is compensated according to the estimated parameters.

Abstract translation: 本发明公开了一种用于接收机的IQ不平衡补偿的方法和装置。 由接收机接收的信号中的前导码的重复属性用于估计IQ不平衡参数。 前导码携带的数据每N个采样间隔重复一次。 基于假设由N个样本分开的任何两个采样点之间的比率相同，导出MSE方程，并且可以通过使用LS算法求解MSE方程来估计IQ不平衡参数。 因此，根据估计的参数来补偿信号的IQ失配偏移。

公开(公告)号：US06961582B2

公开(公告)日：2005-11-01

申请号：US10073183

申请日：2002-02-13

Applicant: Szu Lin Su ,  Yu Che Su

Inventor： Szu Lin Su ,  Yu Che Su

IPC: H04B7/005 ,  H04B7/00

CPC classification number: H04W52/228 ,  H04W52/146 ,  H04W52/24

Abstract: A transmission power control method for a CDMA communication system which performs communication between a basestation and a plurality of mobile stations; comprising the steps of: transmitting uplink power from the plurality of the mobile stations to the basestation; measuring and receiving the uplink power transmitted from each of the plurality of mobile stations with different signal-to-interference (SIR) requirement thresholds at the basestation; taking a algorithm to converge the transmitted uplink power from each of the plurality of mobile stations; and calculating the uplink power transmitted from each of the plurality of mobile stations by a power convergence factor. The transmission power control method only needs the local measurements at the basestation and can meet different SIR requirements of mobile stations based on fair principle. Additionally, the transmission power control method of the present invention can not only converge fast, but also keep the transmitted power in a reasonable range.

Abstract translation: 一种执行基站与多个移动台之间的通信的CDMA通信系统的发送功率控制方法; 包括以下步骤：将来自所述多个移动站的上行链路功率发送到所述基站; 测量和接收在基站处具有不同的信号干扰（SIR）要求阈值的从多个移动站中的每一个传送的上行链路功率; 采用算法来收敛来自所述多个移动站中的每一个的所发送的上行链路功率; 以及通过功率收敛因子计算从所述多个移动站中的每一个发送的上行链路功率。 发射功率控制方法只需要在基站进行本地测量，并且可以基于公平的原理满足移动台的不同SIR要求。 此外，本发明的发送功率控制方法不仅可以快速收敛，而且可以将发送功率保持在合理的范围内。