发明名称 |
Estimating frequency-offsets and multi-antenna channels in MIMO OFDM systems |
摘要 |
Techniques are described for carrier frequency offset (CFO) and channel estimation of orthogonal frequency division multiplexing (OFDM) transmissions over multiple-input multiple-output (MIMO) frequency-selective fading channels. A wireless transmitter forms blocks of symbols by inserting training symbols within two or more blocks of information-bearing symbols. The transmitter applies a hopping code to each of the blocks of symbols to insert a null subcarrier at a different position within each of the blocks of symbols, and a modulator outputs a wireless signal in accordance with the blocks of symbols. A receiver receives the wireless signal and estimates the CFO, and outputs a stream of estimated symbols based on the estimated CFO.
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申请公布号 |
US8588317(B2) |
申请公布日期 |
2013.11.19 |
申请号 |
US201113301482 |
申请日期 |
2011.11.21 |
申请人 |
GIANNAKIS GEORGIOS B.;MA XIAOLI;REGENTS OF THE UNIVERSITY OF MINNESOTA |
发明人 |
GIANNAKIS GEORGIOS B.;MA XIAOLI |
分类号 |
H04L27/01 |
主分类号 |
H04L27/01 |
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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