Patent · US Active

Method and apparatus for communication channel estimation

US7680218B2 · kind B2 · utility

2Cited by

5References

26Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Leif Wilhelmsson · Lund, SE
Bo Bernhardsson · Lund, SE
Per-Ola Larsson · Sollentuna, SE

Key dates

Filing date	May 23, 2006
Grant date	Mar 16, 2010
Priority date	—
Expiry date	Oct 14, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04L27/2647
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A method and apparatus for predicting channel estimates for non-received signal frequencies provides knowledge of propagation channel characteristics for non-received frequencies. One embodiment predicts uplink (or downlink) channel estimates based on measured downlink (or uplink) channel estimates, which is advantageous in systems having different uplink and downlink frequencies. Another embodiment predicts channel responses for non-received OFDM sub carrier frequencies based on measuring channel responses for received OFDM sub carrier frequencies. Such processing may comprise, for example, measuring channel responses for received OFDM pilot sub carriers, predicting channel responses at frequency intervals corresponding to pilot sub carrier spacing, and interpolating between those values to predict channel responses at data sub carrier frequencies.

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