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IEEE 802.11 a OFDM Pilot tones insertion method ???

Altera_Forum
Honored Contributor II
‎02-07-2012 09:14 PM
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Hello,  

 

I am trying to a WLAN baseband processor I am familiar with designs of most of the blocks, but I am facing a problem which is finding a detailed method to combine the 48 subcarriers with pilot tones and zeros, could you please give some advise... 

 

Regards…
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Altera_Forum
Honored Contributor II
‎02-08-2012 07:12 AM
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Pilot subcarriers are scrambled and inserted in -21 -7 & 7 21 locations resepectively of each OFDM subcarrier  

 

For scrambler Details you can refer to IEEE 802.11a document Figure - 113
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Altera_Forum
Honored Contributor II
‎02-09-2012 08:53 PM
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Thanks kalyansrinivasm,... 

 

What I meant was how to multiplex the 12 MSps data samples with the 16 MSps Pilot samples (Assuming that the 127 pilot tones with varying polarity are stored in a ROM) before passing the Multiplexed 64 samples (53 samples + 11 zeros ) frame to the IFFT block ???
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