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Preamble and Cell Search Design for 802.16m System - page 5 / 28

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Proposed preamble features

Low PAPR sequence and larger cell coverage

PAPR is almost 0 dB

Good cross correlation

Large cell ID set than 16e to support femto cell and Relay station

16e: 114  

Proposed scheme: 417

Low cell search time and complexity

300ms->20ms

Simple cell detection algorithm and one FFT operation can detect multiple cell IDs

Proposed sequence provide better cell detection performance

Same OFDM waveform on P-SCH in all cells

Coarse time synchronization in time domain

Hierarchical SCH structure

P-SCH and S-SCH

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