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Preamble and Cell Search Design for 802.16m System - page 4 / 28

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Why do we need new preamble?

System access latency

16e preamble can not support fast system access

System access latency: 300ms

B3G system desired value: 20-80ms and below

Cell coverage

16e preamble PAPR is not enough low

3.65~4.36dB

16e preamble cross-correlation is not enough good

Sector specific 16e preamble sequence limit cell edge MS system access performance

In cell edge the property of repetition of 3 is destroyed

MS capability support

16e preamble can not support different capability MS access

pure 16m system support

MIMO support

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