WHT/OFDM - an improved OFDM transmission method for selective fading channels

The application of the Walsh-Hadamard transformation is proposed as the means to combat the influence of selective fading on the OFDM system performance. Substantial improvement as compared with the OFDM system applying the adaptive equalizer at the receiver is shown by simulation.

[1]  Hanna Bogucka.  Application of the new joint complex Hadamard-inverse Fourier transform in a OFDM/CDMA wireless communication system , 1999, Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324).

[2]  John G. Proakis,et al.  Digital Communications , 1983 .

[3]  J.A.C. Bingham,et al.  Multicarrier modulation for data transmission: an idea whose time has come , 1990, IEEE Communications Magazine.