发明名称 |
Data processing apparatus and method |
摘要 |
<p>A data processing apparatus maps data symbols received from a predetermined number of sub-carrier signals of an Orthogonal Frequency Division Multiplexed (OFDM) symbol into an output data stream. The data processor includes an interleaver memory which reads-in the predetermined number of data symbols for mapping onto the OFDM sub-carrier signals. The interleaver memory reads-out the data symbols on to the OFDM sub-carriers to effect the mapping, the read-out being in a different order than the read-in, the order being determined from a set of addresses, with the effect that the data symbols are interleaved on to the sub-carrier signals. The set of addresses are generated from an address generator which comprises a linear feedback shift register and a permutation circuit. A generator polynomial for the linear feedback shift register of R i ¹ 12 = R i - 1 ¹ 0 Š• R i - 1 ¹ 1 Š• R i - 1 ¹ 4 Š• R i - 1 ¹ 5 Š• R i - 1 ¹ 9 Š• R i - 1 ¹ 11 is provided with a permutation order which has been established by simulation analysis to optimise communication performance via typical radio channels, of an OFDM modulated system such as a Digital Video Broadcasting (DVB) standard such as DVB-Terrestrial2 (DVB-T2).</p> |
申请公布号 |
EP2056463(A3) |
申请公布日期 |
2009.08.26 |
申请号 |
EP20080253335 |
申请日期 |
2008.10.15 |
申请人 |
SONY CORPORATION |
发明人 |
TAYLOR, MATTHEW PAUL ATHOL;ATUNGSIRI, SAMUEL ASANBENG;WILSON, JOHN NICHOLAS |
分类号 |
H03M13/27;H04L1/00;H04L27/26 |
主分类号 |
H03M13/27 |
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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