Scattered pilot pattern and channel estimation method for MIMO-OFDM systems

Patent 7949061 Issued on May 24, 2011. Estimated Expiration Date:

July 6, 2030. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Nortel Networks Limited

Application

No. 12830791 filed on 07/06/2010

US Classes:

375/260Plural channels for transmission of a single pulse train

Examiners

Primary: Wang, Ted M

International Classes

H04K 1/10
H04L 27/28

Abstract

Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas.

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