发明名称 |
BLIND TIMING SYNCHRONIZATION AND LOW COMPLEXITY CHANNEL ESTIMATION IN ACO-OFDM SYSTEMS |
摘要 |
A wireless transmit/receive unit (WTRU) that may receive an asymmetrically clipped optical orthogonal frequency-division multiplexing (ACO-OFDM) signal is disclosed. The ACO-OFDM signal may include an ACO-OFDM symbol and the ACO-OFDM signal may be generated with or without a pilot or training data. Where the ACO-OFDM signal may not include a pilot or training data, the WTRU may determine a correlation minimum between a first part of N samples of the ACO-OFDM symbol and a second part of N samples of the ACO-OFDM symbol. The correlation minimum may indicate an estimated boundary of the ACO-OFDM symbol which may provide the WTRU with timing synchronization information. Where the ACO-OFDM signal may include one or more ACO-OFDM pilot symbols on one or more pilot subcarriers, the WTRU may interpret an amount of training data included in the one or more ACO-OFDM pilot symbols that may provide information for channel estimation.
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申请公布号 |
US2012057872(A1) |
申请公布日期 |
2012.03.08 |
申请号 |
US201113035122 |
申请日期 |
2011.02.25 |
申请人 |
FREDA MARTINO;DEMIR ALPASLAN Y.;MURRAY JOSEPH M.;INTERDIGITAL PATENT HOLDINGS, INC. |
发明人 |
FREDA MARTINO;DEMIR ALPASLAN Y.;MURRAY JOSEPH M. |
分类号 |
H04J14/00 |
主分类号 |
H04J14/00 |
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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