Hochwald construction of unitary matrix codebooks via eigen...

Details Hochwald construction of unitary matrix codebooks via eigen... Hochwald construction of unitary matrix codebooks via eigen...

2005-04-29

2009-12-08

Vo, Huyen X. (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S221000, C704S230000

Reexamination Certificate

active

07630886

ABSTRACT:
A method of deriving a codebook including deriving a first codeword Plin Euclidean coordinates, transforming the first codeword into eigen-coordinates, applying a Hochwald construction to the first codeword in eigen-coordinates to derive a plurality of codewords in eigen-coordinates and transforming the plurality of codewords in eigen-coordinates into a plurality of codewords in Euclidean coordinates to form the codebook.

REFERENCES:
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patent: 2003/0130003 (2003-07-01), Won
“Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands”, Draft IEEE Standard for Local and metropolitan area networks, Dec. 23, 2004, pp. 1-484.
Hochwald, B. M. et al., “Systematic Design of Unitary Space-Time Constellations”, Sep. 2000, pp. 1962-1973, IEEE Transactions on Information Theory, vol. 46, No. 6.
Zhang, J. et al., “Closed-Loop MIMO Precoding with CQICH Feedbacks”, Jan. 10, 2005, pp. 1-12, IEEE 802.16 Broadband Wireless Access Working Group http://ieee802.org/6.
“Limited Feedback Precoding for Orthogonal Space-Time Block Codes”, David J. Love et al., IEEE 2004, pp. 561-565.

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