Orthogonal frequency-division multiplexing (OFDM) is well-known as a high-bit-rate
transmission technique, but the Doppler frequency offset due to the high speed movement …

A novel time-frequency processing scheme is developed to exploit Doppler diversity of time
varying multipath channel for OFDM mobile communication systems. Extensive simulations …

Time-selective channels in orthogonal frequency division multiplexing (OFDM) systems
introduce intercarrier interference (ICI) which destroys the orthogonality among the …

A simplified Doppler diversity technique for orthogonal frequency division multiplexing
(OFDM) high-speed mobile communication systems has been proposed in this paper. And …

In time-varying fading channels, orthogonal frequency division multiplexing systems suffer
severe performance degradation caused by interchannel interference (ICI). We utilize this …

A novel channel estimation method is proposed to improve the performance of highly mobile
applications specified by IEEE 802.16 e. It utilizes the continuity of channel variations and …

Fractional sampling (FS) and Doppler diversity equalization in OFDM receivers can achieve
two types of diversity (path diversity and frequency diversity) simultaneously on time-varying …

A cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) system that transmits
information over a time-varying fading channel is considered. In channels with large Doppler …

Large dynamic Doppler caused by high-speed flight of hypersonic vehicles brings a great
challenge to acquisition, tracking and correct demodulation of telemetry and communication …

Doppler diversity has been proven effective to combat time variation caused by Doppler
spread in single carrier systems. However, it is not efficient to directly apply Doppler diversity …