发明名称 |
IQ IMBALANCE IMAGE SUPPRESSION |
摘要 |
A WCDMA receiver performs baseband suppression of the image signal component caused by IQ imbalance. An IQ imbalance image scaling factor is computed from conventional channel estimates and estimates of the IQ imbalance image channel, the latter computed using a conjugated scrambling sequence as the reference sequence for despreading. An IQ imbalance image estimate is obtained by scaling the complex conjugate of the received signal by the IQ imbalance image scaling factor, and is subtracted from the input signal prior to applying traditional baseband demodulation algorithms. |
申请公布号 |
EP2183852(B1) |
申请公布日期 |
2016.09.07 |
申请号 |
EP20080785993 |
申请日期 |
2008.07.09 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
LINDOFF, BENGT;REIAL, ANDRES |
分类号 |
H04B1/00;H03D3/00;H04B1/707;H04L27/38 |
主分类号 |
H04B1/00 |
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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