发明名称 |
DC interference removal in wireless communications |
摘要 |
A method for removing direct current (DC) interference from a signal received by a communication receiver is provided that removes both a DC offset signal induced by the communication receiver and transmitter. The method includes removing the estimated DC offset from the received signal, correcting a frequency shift in the received signal, estimating a second DC offset signal induced by a source of the received signal, such as a transmitter and removing the estimated second DC offset from the received signal. The receiver DC offset signal is estimated and removed prior to performing a timing carrier offset correction using Barker code manipulation to remove receiver-induced DC offset interference and to sum all Barker chips after effectively multiplying Barker codes to correlate to a Barker sequence unaffected by the receiver DC offset signal.
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申请公布号 |
US7266359(B2) |
申请公布日期 |
2007.09.04 |
申请号 |
US20040963387 |
申请日期 |
2004.10.12 |
申请人 |
FREESCALE SEMICONDUCTOR, INC. |
发明人 |
CHEN WEIZHONG;MOLINA ROBERT |
分类号 |
H04B1/10;G06F3/033;H04B1/30;H04L25/06;H04L27/00 |
主分类号 |
H04B1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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