Sphere-packings, lattices, and groups
Sphere-packings, lattices, and groups
Vector quantization and signal compression
Vector quantization and signal compression
Information Theory and Reliable Communication
Information Theory and Reliable Communication
Random matrix theory and wireless communications
Communications and Information Theory
QAM and PSK codebooks for limited feedback MIMO beamforming
IEEE Transactions on Communications
IEEE Transactions on Signal Processing
GLRT-Optimal Noncoherent Lattice Decoding
IEEE Transactions on Signal Processing - Part II
Multiple Antenna Broadcast Channels With Shape Feedback and Limited Feedback
IEEE Transactions on Signal Processing - Part I
How much training is needed in multiple-antenna wireless links?
IEEE Transactions on Information Theory
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
Signature optimization for CDMA with limited feedback
IEEE Transactions on Information Theory
MIMO Broadcast Channels With Finite-Rate Feedback
IEEE Transactions on Information Theory
Communication Over MIMO Broadcast Channels Using Lattice-Basis Reduction
IEEE Transactions on Information Theory
What is the value of limited feedback for MIMO channels?
IEEE Communications Magazine
Multi-Antenna Downlink Channels with Limited Feedback and User Selection
IEEE Journal on Selected Areas in Communications
Vector Precoding for Wireless MIMO Systems and its Replica Analysis
IEEE Journal on Selected Areas in Communications
Sum rates, rate allocation, and user scheduling for multi-user MIMO vector perturbation precoding
IEEE Transactions on Wireless Communications
Linear-time nearest point algorithms for coxeter lattices
IEEE Transactions on Information Theory
A Novel Lattice Reduction Precoding Method
Wireless Personal Communications: An International Journal
A Novel CSI Feedback Method for Dynamic SU/MU MIMO Adaptation
Wireless Personal Communications: An International Journal
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This paper considers the multiuser multiple-input multiple-output (MIMO) Rayleigh fading broadcast channel. We consider the case where the multiple transmit antennas are used to deliver independent data streams to multiple users via a multiuser technique known as vector perturbation. We propose latticetheoretic and rate-distortion based approaches to analyze the performance of these systems, taking into account the practical restrictions imposed by limited feedback and training. We show that performance is primarily determined by the ratio between the number of users and the number of transmit antennas. We then propose a new practical low-complexity low-rate feedback scheme, and show that the performance approaches the ideal rate-distortion based scheme.