Patent · US Active

Quantized channel state information prediction in multiple antenna systems

US8009778B2 · kind B2 · utility

4Cited by
6References
40Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 7, 2007
Grant dateAug 30, 2011
Priority date—
Expiry dateOct 20, 2029

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04B7/0658
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

A CSI vector quantizer (VQ) system is provided for time-correlated channels. The VQ system operates a receiver forwarding quantized channel state information in the form of indices and a transmitter predicting channel state change. The VQ system is aimed at feedback channels, in which bit errors, erasures and delays can occur. The VQ system uses transmitter-side channel prediction algorithms that work with the quantized CSI information and allow the system to recover from feedback channel transmission errors, erasures and delays. Moreover, the techniques can be used to lower the required feedback rate, while keeping the system's throughput at the required level.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.