Abstract
Channel estimation for a reduced-guard-interval (RGI) CO-OFDM system shows a unique dependence on the training symbol design in the presence of intra-channel nonlinearities. Because smaller FFT sizes can be used, the RGI CO-OFDM system also demonstrates better non-linearity tolerance than conventional CO-OFDM with larger FFT sizes.
© 2011 Optical Society of America
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