Method for iterative estimation of global parameters

摘要

A method for iterative estimation of a set of unknown channel parameters in a beamforming network including determining a first order estimate of offsets at measurement nodes and an estimate of the confidence in the initial estimate of the measurement nodes' offsets, and iterating, until a desired estimation accuracy is obtained, determining an improved estimate of a parameter set, and the confidence in the estimates, using the prior estimate of the offsets at the measurement nodes and determining an improved estimate of the offsets at the measurement nodes and the associated confidence values using the prior estimate of the parameter set and the corresponding confidence values.

主权项

1. A method for iterative estimation of a set of unknown channel parameters in a beamforming network comprising:
determining a first order estimate of offsets at measurement nodes and a confidence in the initial estimate of the offsets at the measurement nodes; and iterating, until a desired estimation accuracy is obtained:
determining an improved estimate of a parameter set, and a confidence in the improved estimate, using the prior estimate of the offsets at the measurement nodes; anddetermining an improved estimate of the offsets at the measurement nodes, and the associated confidence values, using the prior estimate of the parameter set and the corresponding confidence values, wherein the measurement nodes on a forward link collect channel information corresponding to a Geostationary satellite's forward link, and wherein a Hybrid Matrix assembly is a part of a satellite payload, send the measured channel information to a central beamforming network over a Wide Area Network (WAN) fiber link, wherein the Hybrid Matrix effects are taken into account and propagation delays are compensated for using a linear predictive scheme in processing of a measurement matrix RL×M prepared using the data on the WAN, and wherein on a return link, beacon transmitters send pilot signals that are received at the beamforming network, wherein measurements of the pilot signals are used to formulate the matrix RL×M.