EURASIP Journal on Wireless Communications and Networking
Multiplexing two information sources over fading channels: a cross-layer design perspective
Signal Processing - Special section: Advances in signal processing-assisted cross-layer designs
Design and experimental validation of MIMO multiuser detection for downlink packet data
EURASIP Journal on Applied Signal Processing
Mutual information of multipath channels with imperfect channel information
IEEE Transactions on Communications
Maximum likelihood receivers for space-time coded MIMO systems with Gaussian estimation errors
IEEE Transactions on Communications
A technique for antenna configuration selection for reconfigurable circular patch arrays
IEEE Transactions on Wireless Communications
On the capacity and energy efficiency of training-based transmissions over fading channels
IEEE Transactions on Information Theory
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Optimization of Feedback for Adaptive MIMO Transmissions Over Time Varying Channels
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Hi-index | 35.74 |
We analyze the effects of pilot-assisted channel estimation on achievable data rates (lower bound on information capacity) over a frequency flat time-varying channel. Under a block-fading channel model, the effects of the estimation error are evaluated in the case of the estimates being available at the receiver only (open loop) and in the case when the estimates are fed back to the transmitter allowing water pouring transmitter optimization (closed loop). Using a characterization of the effective noise due to estimation error, we analyze the achievable rates as a function of the power allocated to the pilot, the channel coherence time, the background noise level, as well as the number of transmit and receive antennas. The analysis presented here can be used to optimally allocate pilot power for various system and channel operating conditions, and to also determine the effectiveness of closed loop feedback.