I have noticed in some OFDM systems, some null subcarriers are added in frequency domain. What's the benefit of those zero subcarriers, and is that mandatory ?
An example I have read about that adding of zero subcarriers is here This paper
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Sign up to join this communityI have noticed in some OFDM systems, some null subcarriers are added in frequency domain. What's the benefit of those zero subcarriers, and is that mandatory ?
An example I have read about that adding of zero subcarriers is here This paper