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Channel Estimation in IEEE 802.16

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by migcanadio

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Hello everybody!

I need some help with a simulation I'm carrying out.

I'm trying to do an interpolation for channel estimation in a IEEE 802.16 based system. The interpolation between two pilot subcarriers is easy. The problem is that I don't know what to do with the data subcarriers in the extremes.

I'll try to explain better. I would hace a vector of the form:

[Data(N) Pilot(1) Data(N) Pilot(1) Data(N)]

I want to obtain the values of the function in the data position from the values of the pilots. Between the pilots is easy but,what can I do with the pilots in the extremes?

Thanks a lot!

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by erdeep2020

hi friends

i am also simulating ieee 802.16e and i also faced same problem, becoz in 802.16e std ofdm symbol structure is
symbol_ofdm = [guard1 data(1:12) pilots(1) data(13:36)...
pilots(2) data(37:60) pilots(3) data(61:84) pilots(4)...
data(85:96) DC data(97:108) pilots(5) data(109:132) pilots(6)...
data(133:156) pilots(7) data(157:180) pilots(8) data(181:192) guard2];

where
gaurd1(1:28)
gaurd1(1:27)

plz help me

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