| 摘要 |
A data structure comprising a preamble portion and a data portion is provided. The preamble portion comprises one or more preamble symbols, and the data portion comprises one or more data symbols. The preamble portion comprises a synchronisation zone comprising two or more sequences for synchronisation. In one embodiment, the synchronisation zone comprises a first sequence based on a sequence ZC1, and a second sequence based on a sequence ZC2, wherein ZC1 and ZC2 are complimentary ZC sequences. In another embodiment, the synchronisation zone comprises M sequences based on a sequence ZCO located sequentially in the synchronisation zone. The M sequence form M/2 pairs of sequences, wherein one sequence from each of M/2-1 pairs of the M/2 pairs of sequences comprises +ZCO or —ZCO selected according to information to be signalled. In another embodiment, the synchronisation zone comprises M sequences located sequentially in the synchronisation zone, each being selected from a set of two or more different sequences according to information to be signalled. In another embodiment, the synchronisation zone comprises a repetition of two or more identical sequence blocks, each sequence block comprising one or more sequences. In another embodiment, the synchronisation zone comprises M sequences based on a sequence ZCO, wherein one or more of the M sequences comprise a cyclically shifted version of ZCO. |
