Patent · US Active

Alamouti encoding and decoding

US9048911B2 · kind B2 · utility

2Cited by

4References

28Claims

0Family size

Assignee

SONY GROUP CORPORATION · JP

Inventors

Lothar Stadelmeier · Stuttgart, DE
Daniel Schneider · Stuttgart, DE

Key dates

Filing date	Nov 6, 2008
Grant date	Jun 2, 2015
Priority date	—
Expiry date	Dec 8, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04B7/068
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

The present invention relates to a refinement of the Alamouti encoding scheme. The Alamouti scheme provides transmitting in a first period, the symbols S1 and S2 and in the next period the symbols—S2* and S1*, wherein S1* is the complex conjugate of S1. The symbols carrying the same information are transmitted on different paths to a receiver. If a disturbance occurs during the first period, the receiver may recover the symbol from symbol S1* in the second time period and vice versa. If no disturbance occurs, the receiver may use both symbols to further improve the transmission quality. An interleaver is provided to increase the transmission distance between redundant symbols, thereby causing the spread delay to be set to a value larger than the maximum length of typical channel disturbance in the communication channel.

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