Cooperative multibeamforming in ad hoc networks
EURASIP Journal on Advances in Signal Processing
Noncooperative Eigencoding for MIMO Ad hoc Networks
IEEE Transactions on Signal Processing
Collaborative beamforming for distributed wireless ad hoc sensor networks
IEEE Transactions on Signal Processing
On the achievable throughput of a multiantenna Gaussian broadcast channel
IEEE Transactions on Information Theory
Duality, achievable rates, and sum-rate capacity of Gaussian MIMO broadcast channels
IEEE Transactions on Information Theory
Grassmannian beamforming for multiple-input multiple-output wireless systems
IEEE Transactions on Information Theory
Limited feedback unitary precoding for spatial multiplexing systems
IEEE Transactions on Information Theory
Distributed multiuser power control for digital subscriber lines
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
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In wireless MIMO ad-hoc networks, channel reciprocity is assumed to optimize transmit and receive beamformers in conventional beamforming algorithms. But, when channels between nodes are not reciprocal, it is a huge burden to the feedback channel to inform a transmitting node of the channel state information. In this paper, we propose a distributed beamforming scheme with limited feedback for non-reciprocal channels in MIMO ad-hoc networks. In the proposed scheme, all transmitting and receiving node pairs working at the same resource perform an iterative sequential beamformer update in a distributed way. Numerical results are also presented to verify the performance of the proposed scheme.