Unitary precoding based on randomized FFT matrices

摘要

Systems and methodologies are described that facilitate constructing unitary matrices that may be utilized in linear precoding for multiple-input multiple-output (MIMO) wireless communication systems. Each unitary matrix may be generated by combining (e.g., multiplying) a diagonal matrix with a Discrete Fourier Transform (DFT) matrix. The unitary matrices may be utilized to provide feedback related to a channel and/or control transmission over a channel based upon obtained feedback.

主权项

1. A method that facilitates providing channel related feedback for precoding in a wireless communication system, comprising:
using a set of unitary matrices, each of the unitary matrices being based upon a diagonal matrix and a Discrete Fourier Transform (DFT) matrix; selecting a particular unitary matrix from the set of unitary matrices based upon an estimate of a forward link channel; and transmitting an index associated with the particular unitary matrix via a reverse link channel.