发明名称 |
IQ Impairment Estimation in an OFDM Signal |
摘要 |
System and method for evaluating a transmitter by estimating IQ impairments in an orthogonal frequency division multiplexed (OFDM) signal generated by the transmitter. The OFDM signal may be received. The OFDM signal may represent a stream of symbols, each comprising a plurality of subcarriers. At least a subset of the subcarriers may be pilot subcarriers. The pilot subcarriers may be grouped into one or more groups of pilot subcarriers based on one or more conditions: a pilot subcarrier which satisfies a condition in its relation to a mirror subcarrier may be grouped with other pilot subcarriers which also satisfy the condition in relation to mirror subcarriers. An estimate of one or more of gain imbalance or quadrature skew of the OFDM signal may be calculated based on the one or more groups of pilot subcarriers and the one or more conditions. The estimate may be used to evaluate the transmitter.
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申请公布号 |
US2011103496(A1) |
申请公布日期 |
2011.05.05 |
申请号 |
US20100684466 |
申请日期 |
2010.01.08 |
申请人 |
SETHIA PRAKASH;KRISHNAN RAMESH;DESHMUKH NIKHIL |
发明人 |
SETHIA PRAKASH;KRISHNAN RAMESH;DESHMUKH NIKHIL |
分类号 |
H04L27/00 |
主分类号 |
H04L27/00 |
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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