對頻率相依I/Q不平衡的補償方法及其裝置

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

100141928

專利證號

I 462544

專利獲證名稱

對頻率相依I/Q不平衡的補償方法及其裝置

專利所屬機關 (申請機關)

國立交通大學

獲證日期

2014/11/21

技術說明

為了可以減少filter mismatch造成的影響，我們分別控制I path ADC和Q path ADC來將I/Q path的filters的main pulses對準，使得filter mismatch對其後的IQ 影響降低，接著利用時域和頻域的preamble來將IQ imbalance的參數估出並加以補償；先利用multi-phase clock generator來將I/Q path filters的main pulses對準，接著再利用其後的frequency-dependent I/Q estimator/compensator來將剩餘的IQ參數估出並加以補償 In order to reduce the effect of filter mismatch, we control the I-path ADC and Q-path ADC individually to make the main pulses of I/Q filters coherent. Therefore, the effect of filter mismatch can be decreased. Then for estimating the parameter of residual frequency-dependent IQ imbalance, time-domain and frequency-domain preambles are utilized. The flow for correcting frequency-dependent IQ imbalance is shown as following. In the first, a multi-phase clock generator is used to align the main pulses of I/Q path filters. And then a frequency-dependent I/Q estimator/compensator is employed to estimate and compensate for residual frequency-dependent IQ imbalance by using time-domain and frequency-domain preambles.

備註

本部(收文號1100065219)同意該校110年10月27日陽明交大研產學字第1100036963號函申請終止維護專利(陽明交大)

連絡單位 (專責單位/部門名稱)

智慧財產權中心

連絡電話

03-5738251

網址