Time-domain and frequency-domain per-tone equalization for OFDM over doubly selective channels
Signal Processing - Signal processing in communications
Low-complexity banded equalizers for OFDM systems in Doppler spread channels
EURASIP Journal on Applied Signal Processing
Doubly selective channel estimation using superimposed training and exponential bases models
EURASIP Journal on Applied Signal Processing
Efficient sequence detection of multicarrier transmissions over doubly dispersive channels
EURASIP Journal on Applied Signal Processing
A differential OFDM approach to coherence time mitigation in DSRC
Proceedings of the fifth ACM international workshop on VehiculAr Inter-NETworking
Iterative MAP equalization and decoding in wireless mobile coded OFDM
IEEE Transactions on Communications
Signal detection for EST based modulation in Doubly-selective channels
IEEE Transactions on Signal Processing
Low complexity iterative detection for OFDMA uplink with frequency offsets
IEEE Transactions on Wireless Communications
Iterative detection for OFDMA uplink with frequency offsets
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Correlative coding based channel estimation for practical OFDM systems over time varying channels
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Tri-diagonalizing approach on frequency domain equalization in a doubly-selective channel
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
A Gibbs sampling based MAP detection algorithm for OFDM over rapidly varying mobile radio channels
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Low-complexity equalization of rapidly time-varying multi-path channels for OFDM systems
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
PIC-based iterative SDR detector for OFDM systems in doubly-selective fading channels
IEEE Transactions on Wireless Communications
IEEE Transactions on Signal Processing
Fast algorithms in slow and high Doppler mobile environments
IEEE Transactions on Wireless Communications
Wireless Personal Communications: An International Journal
Joint data QR-detection and Kalman estimation for OFDM time-varying Rayleigh channel complex gains
IEEE Transactions on Communications
Low complexity equalization for doubly selective channels modeled by a basis expansion
IEEE Transactions on Signal Processing
EURASIP Journal on Advances in Signal Processing - Special issue on advanced equalization techniques for wireless communications
OFDM system: a new perspective in high Doppler spread
Proceedings of the International Conference & Workshop on Emerging Trends in Technology
Wireless Personal Communications: An International Journal
Statistical Transceiver Designs with ICI Reduction for MIMO-OFDM Systems
Wireless Personal Communications: An International Journal
| Hi-index | 35.69 |
Orthogonal frequency division multiplexing (OFDM) systems may experience significant inter-carrier interference (ICI) when used in time- and frequency-selective, or doubly selective, channels. In such cases, the classical symbol estimation schemes, e.g., minimum mean-squared error (MMSE) and zero-forcing (ZF) estimation, require matrix inversion that is prohibitively complex for large symbol lengths. An analysis of the ICI generation mechanism leads us to propose a novel two-stage equalizer whose complexity (apart from the FFT) is linear in the OFDM symbol length. The first stage applies optimal linear preprocessing to restrict ICI support, and the second stage uses iterative MMSE estimation to estimate finite-alphabet frequency-domain symbols. Simulation results indicate that our equalizer has significant performance and complexity advantages over the classical linear MMSE estimator in doubly selective channels.