| Authors: | |
| Mehdi Ganji | |
| Xun Zou | |
| Hamid Jafarkhani |
One Sentence Summary:
investigate the characteristics of spectrally efficient frequency division multiplexing (SEFDM)
Abstract:
-In this work, we investigate the characteristics of spectrally efficient frequency division multiplexing (SEFDM). We prove that as the number of sub-carriers goes to infinity, the system model becomes rank-deficient and the number of zero eigenvalues is proportional to the frequency compression factor. We propose to transmit the superimposed symbols through the non-zero eigenvalues using proper power allocation. At the receiver side, we apply the block-wise zero forcing with successive interference cancellation (ZF-SIC) detection method and an approximation of the symbol error rate performance is provided. We compare the performance of the proposed method with that of the orthogonal frequency division multiplexing (OFDM) method in additive white Gaussian noise (AWGN) and frequency selective channels.