Trade-offs in bit-rate allocation for wireless video streaming
MSWiM '05 Proceedings of the 8th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
Optimal training for time-selective wireless fading channels using cutoff rate
EURASIP Journal on Applied Signal Processing
EURASIP Journal on Applied Signal Processing
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Design of distributed unique words for enhanced frame synchronization
IEEE Transactions on Communications
Trade-offs in bit-rate allocation for wireless video streaming
IEEE Transactions on Multimedia - Special issue on quality-driven cross-layer design for multimedia communications
Optimizing training lengths and training intervals in time-varying fading channels
IEEE Transactions on Signal Processing
Optimum pilot-to-data power ratio for partial RAKE receiver in nakagami-m fading channels
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Model-based pilot and data power adaptation in PSAM with periodic delayed feedback
IEEE Transactions on Wireless Communications
Finite-state Markov modelling of frequency-selective fading channels with correlated taps
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Soft iterative channel estimator for BICM-ID-SSD over time-varying flat fading channels
WTS'09 Proceedings of the 2009 conference on Wireless Telecommunications Symposium
Channel equalization in narrowband mobile peer-to-peer networks using superimposed pilots
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
On the pilot spacing constraints for continuous time-varying fading channels
IEEE Transactions on Communications
IEEE Transactions on Image Processing
Kalman filter-based channel estimation for amplify and forward relay communications
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
A unified treatment of optimum pilot overhead in multipath fading channels
IEEE Transactions on Communications
On the Achievable Rate for Wideband Channels with Estimated CSI
Journal of Signal Processing Systems
Wireless Personal Communications: An International Journal
Precoder Design for BICM-MIMO Systems Under Channel Estimation Error
Wireless Personal Communications: An International Journal
| Hi-index | 35.69 |
Two major training techniques for wireless channels are time-division multiplexed (TDM) training and superimposed training. For the TDM schemes with regular periodic placements (RPPs), the closed-form expression for the steady-state minimum mean square error (MMSE) of the channel estimate is obtained as a function of placement for Gauss-Markov flat fading channels. We then show that among all periodic placements, the single pilot RPP scheme (RPP-1) minimizes the maximum steady-state channel MMSE. For binary phase-shift keying (BPSK) and quadrature phase-shift keying (QPSK) signaling, we further show that the optimal placement that minimizes the maximum uncoded bit error rate (BER) is also RPP-1. We next compare the MMSE and BER performance under the superimposed training scheme with those under the optimal TDM scheme. It is shown that while the RPP-1 scheme performs better at high SNR and for slowly varying channels, the superimposed scheme outperforms RPP-1 in the other regimes. This demonstrates the potential for using superimposed training in relatively fast time-varying environments.