On the DHT-based multicarrier tranceiver over multipath fading channel

In this paper, an Multicarrier modulation (MCM) transceiver based on discrete Hartley transform (DHT) is investigated. Instead of conventional discrete Fourier transform (DFT), DHT is an alternative orthogonal basis with real-valued operation. However, the DHT can not directly diagonalize the multipath fading channel due to its inherent property. To deal with this problem, we devise a DHT-based OFDM architecture that can perfectly diagonalize the channel matrix base on the complementary property of DHT matrix and channel gain symmetric features. In addition, two-dimensional complex signaling, quadrature amplitude modulations (QAM), can also be applied to the proposed structure for bandwidth efficient transmission. Finally, numerical simulations have shown the validity of the proposed DHT-based OFDM system.