Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: The performance of OFDM systems may be degraded when ISI channels have spectral nulls. Also, when ISI channels have many taps, the data rate overhead due to the insertion of the cyclic prefix is high. ,  propose a precoded OFDM system that may improve the performance of the OFDM systems for spectral null channels.  also propose size K/spl times/1 vector OFDM systems that reduce the cyclic prefix length by K times compared to the conventional OFDM systems. The precoding scheme is simply to insert one or more zeros beten each two sets of K consecutive information symbols, although it can be generalized to a general form. This precoding scheme may be able to remove the spectral nulls of an ISI channel without knowing the ISI channel. When no zero is inserted beten each two sets of K consecutive information symbols and only each K consecutive symbols are blocked together,  obtain vector OFDM systems.
['X.-G. Xia']
I am writing a research paper on a idea Precoded OFDM systems robust to spectral null channels and vector OFDM systems with reduced cyclic prefix length
[{"from": "human", "value": "I am writing a research paper on a idea Precoded OFDM systems robust to spectral null channels and vector OFDM systems with reduced cyclic prefix length"}, {"from": "gpt", "value": "Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: The performance of OFDM systems may be degraded when ISI channels have spectral nulls. Also, when ISI channels have many taps, the data rate overhead due to the insertion of the cyclic prefix is high. ,  propose a precoded OFDM system that may improve the performance of the OFDM systems for spectral null channels.  also propose size K/spl times/1 vector OFDM systems that reduce the cyclic prefix length by K times compared to the conventional OFDM systems. The precoding scheme is simply to insert one or more zeros beten each two sets of K consecutive information symbols, although it can be generalized to a general form. This precoding scheme may be able to remove the spectral nulls of an ISI channel without knowing the ISI channel. When no zero is inserted beten each two sets of K consecutive information symbols and only each K consecutive symbols are blocked together,  obtain vector OFDM systems."}]