Generalized multicarrier CDMA: unification and linear equalization
EURASIP Journal on Applied Signal Processing
Frequency-shift zero-forcing time-varying equalization for doubly selective SIMO channels
EURASIP Journal on Applied Signal Processing
Estimation and direct equalization of doubly selective 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 discrete model for the efficient analysis of time-varying narrowband communication channels
Multidimensional Systems and Signal Processing
Wireless Personal Communications: An International Journal
IEEE Transactions on Wireless Communications
Optimized training and basis expansion model parameters for doubly-selective channel estimation
IEEE Transactions on Wireless Communications
Rate-embedded doubly directional differential space-time-frequency coding schemes
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Space-time block coding for doubly-selective channels
IEEE Transactions on Signal Processing
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Time-varying FIR decision feedback equalization for MIMO transmission over doubly selective channels
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Joint synchronization and channel estimation for OFDM transmissions over doubly selective channels
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Noncoherent capacity of underspread fading channels
IEEE Transactions on Information Theory
A novel BEM- based channel estimation algorithm for time variant uplink OFDMA system
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
On full diversity equalization for precoded block transmission systems
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Time-varying FIR equalization for MIMO transmission over doubly selective channels
EURASIP Journal on Advances in Signal Processing - Special issue on advanced equalization techniques for wireless communications
EURASIP Journal on Advances in Signal Processing - Special issue on advanced equalization techniques for wireless communications
Semiblind iterative data detection for FDM systems with CFO and doubly selective channels
IEEE Transactions on Communications
Wireless Personal Communications: An International Journal
| Hi-index | 754.90 |
High data rates and multipath propagation give rise to frequency-selectivity of wireless channels, while carrier frequency offsets and mobility-induced Doppler shifts introduce time-selectivity in wireless links. The resulting time- and frequency-selective (or doubly selective) channels offer joint multipath-Doppler diversity gains. Relying on a basis expansion model of the doubly selective channel, we prove that the maximum achievable multipath-Doppler diversity order is determined by the rank of the correlation matrix of the channel's expansion coefficients, and is multiplicative in the effective degrees of freedom that the channel exhibits in the time and frequency dimensions. Interestingly, it turns out that time-frequency reception alone does not guarantee maximum diversity, unless the transmission is also designed judiciously. We design such block precoded transmissions. The corresponding designs for frequency-selective or time-selective channels follow as special cases, and thorough simulations are provided to corroborate our theoretical findings.