Low complexity semi-blind channel estimation with a pseudo random postfix OFDM modulator

This contribution1 details a new OFDM modulator based on the use of a Pseudo Random Postfix (PRP-OFDM) and low complexity equalization architectures. The main advantage of this new modulation scheme is the ability to estimate and track the channel variations blindly using order one statistics of the received signal. This scheme is thus very well suited in presence of large Doppler spreads where channel tracking becomes essential. Moreover, the proposal of various equalization structures derived from the zero padded transmission schemes, allows implementations ranging from low-complexity/medium performance to increased-complexity/high performance.

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