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Preamble and Cell Search Design for 802.16m System - page 17 / 28

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S-SCH

Scrambled by 2 bits LSBs of frame index and P-SCH sequence

Determine the superframe boundary

Determine the frame in which P-BCH is carried in despite of transmission period of SCH and BCH

P-BCH carries all the bits of system time

These two bits can also be used to seed PHY algorithms like hopping/scrambling etc

P-BCH

P-BCH is scrambled by SFN ID

S-BCH

Scrambled by Cell ID

P-SCH

when only P-SCH is present, P-SCH is scrambled by 2 bits LSBs of frame index.

Scramble for SCH and BCH

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