VOFDM receiver correlation matrix processing using...

Details VOFDM receiver correlation matrix processing using... VOFDM receiver correlation matrix processing using...

2005-09-20

2005-09-20

Trinh, Sonny (Department: 2687)

Telecommunications

Receiver or analog modulated signal frequency converter

Plural receivers

C455S272000, C455S504000

Reexamination Certificate

active

06947715

ABSTRACT:
Vector orthogonal frequency division multiplexing (VOFDM) receiver correlation matrix processing using factorization. Efficient correlation matrix processing is used to combine multiple signals into a single combined signal. This single combined signal may be viewed as being a beam form soft decision. An efficient square root factorization system and method provides for computational resource savings while, at the same time, providing for greater precision of the overall computational results. By reducing intermediate variable calculation dynamic ranges, the overall calculation becomes more precise. Particularly within fixed-point arithmetic applications, a reduction in dynamic range of the intermediate variable calculations provides for a significant increase in final calculation precision. Square root factorization and subsequent mathematical operations produce some savings in the number of computational steps required in dual antenna embodiments, yet the savings in terms of computational steps and required processing resources are relatively much larger within embodiments having even larger number of antennae.

REFERENCES:
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patent: 6137824 (2000-10-01), Liu
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patent: 6680928 (2004-01-01), Dent
patent: 2003/0185326 (2003-10-01), Kolze

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