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Null subcarriers

211 viewsWireless & Cellular Communications
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Kaliki Sravan Kumar7 Mathuranathan unselected answer
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How to choose null subcarriers and how to map with ifft in ofdm system,suppose am using 512 subcarriers in that i have used subcarriers are 480 and cyclic prefix are 32 then how to map with ifft?

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An example for Subcarrier allocation for 64 subcarriers is discussed here.

Simulation of OFDM system in Matlab – BER Vs Eb/N0 for OFDM in AWGN channel

For 512 subcarrieres and more, you need refer a standard like the one below
http://standards.ieee.org/getieee802/download/802.11-2007.pdf