Optimal limited feedback technique for small size and low rate MIMO systems
Proceedings of the 2006 international conference on Wireless communications and mobile computing
Spatial-mode selection for the joint transmit and receive MMSE design
EURASIP Journal on Applied Signal Processing
Majorization and matrix-monotone functions in wireless communications
Foundations and Trends in Communications and Information Theory
Orthogonal space-time block coding with adaptive transmit diversity for correlated MIMO channels
ICECS'03 Proceedings of the 2nd WSEAS International Conference on Electronics, Control and Signal Processing
A diversity guarantee and SNR performance for unitary limited feedback MIMO systems
EURASIP Journal on Advances in Signal Processing
Asynchronous two-way ranging using Tomlinson-Harashima precoding and UWB signaling
EURASIP Journal on Wireless Communications and Networking
Worst-case robust MIMO transmission with imperfect channel knowledge
IEEE Transactions on Signal Processing
Robust QoS-constrained optimization of downlink multiuser MISO systems
IEEE Transactions on Signal Processing
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Robust cognitive beamforming with partial channel state information
IEEE Transactions on Wireless Communications
Diversity gains of power control with noisy CSIT in MIMO channels
IEEE Transactions on Information Theory
Network beamforming using relays with perfect channel information
IEEE Transactions on Information Theory
Novel codeword selection strategy for MIMO precoding with limited channel state information feedback
RWS'09 Proceedings of the 4th international conference on Radio and wireless symposium
Multi-dimensional beamforming for adaptive MIMO systems
ISWPC'09 Proceedings of the 4th international conference on Wireless pervasive computing
Performance of adaptive MIMO system based on beam-nulling
ISWPC'09 Proceedings of the 4th international conference on Wireless pervasive computing
Eigen-beamforming with delayed feedback and channel prediction
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 1
Hybrid beam-forming and beam-switching for OFDM based wireless personal area networks
IEEE Journal on Selected Areas in Communications - Special issue on realizing GBPS wireless personal area networks
A simple codebook design algorithm for MISO channels with channel estimation errors
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
The optimization of combined beamforming with space-time block coding
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Capacity of a multiple-antenna fading channel with a quantized precoding matrix
IEEE Transactions on Information Theory
BER analysis for MIMO-OFDM beamforming with MRC under channel prediction and interpolation errors
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Modulation-adaptive cooperation in Rayleigh fading channels with imperfect CSI
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Capacity and performance of adaptive MIMO system based on beam-nulling
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Downlink resource allocation for OFDMA-based multiservice networks with imperfect CSI
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
On MIMO beamforming systems using quantized feedback
IEEE Transactions on Communications
MIMO Systems with Transmit Antenna Selection and Power Allocation over Correlated Channels
Wireless Personal Communications: An International Journal
Robust MMSE precoding in MIMO channels with pre-fixed receivers
IEEE Transactions on Signal Processing
Coded modulation with mismatched CSIT over MIMO block-fading channels
IEEE Transactions on Information Theory
Optimization of training and feedback overhead for beamforming over block fading channels
IEEE Transactions on Information Theory
Resource allocation in MU-OFDM cognitive radio systems with partial channel state information
EURASIP Journal on Wireless Communications and Networking
Limited feedback precoding for spatial multiplexing systems using linear receivers
MILCOM'03 Proceedings of the 2003 IEEE conference on Military communications - Volume I
Robust Uniform Channel Decomposition and Power Allocation for MIMO Systems with Imperfect CSI
Wireless Personal Communications: An International Journal
Hi-index | 35.99 |
Optimal transmitter designs obeying the water-filling principle are well-documented; they are widely applied when the propagation channel is deterministically known and regularly updated at the transmitter. Because channel state information is impossible to be known perfectly at the transmitter in practical wireless systems, we design, in this paper, an optimal multiantenna transmitter based on the knowledge of mean values of the underlying channels. Our optimal transmitter design turns out to be an eigen-beamformer with multiple beams pointing to orthogonal directions along the eigenvectors of the correlation matrix of the estimated channel at the transmitter and with proper power loading across beams. The optimality pertains to minimizing an upper bound on the symbol error rate, which leads to better performance than maximizing the expected signal-to-noise ratio (SNR) at the receiver. Coupled with orthogonal space-time block codes, two-directional eigen-beamforming emerges as a more attractive choice than conventional one-directional beamforming with uniformly improved performance, without rate reduction, and without essential increase in complexity. With multiple receive antennas and reasonably good feedback quality, the two-directional eigen-beamformer is also capable of achieving the best possible performance in a large range of transmit-power-to-noise ratios, without a rate penalty.