Complex multiplication method and apparatus with phase rotation

Details Complex multiplication method and apparatus with phase rotation Complex multiplication method and apparatus with phase rotation

2007-02-06

2007-02-06

Malzahn, D. H. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

10602951

ABSTRACT:
A method and apparatus for complex multiplication includes steps of: (a) receiving a complex multiplicand having a real value and an imaginary value (704); (b) generating a negation of the real value of the complex multiplicand (706); (c) generating a negation of the imaginary value of the complex multiplicand (708); (d) receiving a complex multiplier (710); and (e) selecting a phasor constant having a value wherein a complex product of the complex multiplicand times the complex multiplier times the phasor constant has a real value equal to one of the real value of the complex multiplicand, the imaginary value of the complex multiplicand, the negation of the real value of the complex multiplicand, and the negation of the imaginary value of the complex multiplicand (712).

REFERENCES:
patent: 6307907 (2001-10-01), Kim
patent: 6535562 (2003-03-01), Mohseni et al.
patent: 7020111 (2006-03-01), Ozluturk et al.
3rd Generation Partnership Project 2 (“3GPP2”), “Physical Layer Standard for cdma2000 Spread Spectrum Systems, Release C,” 3GPP2 C.S0002-C, Version 1.0, May 28, 2002, 509 pages.
3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Spreading and Modulation (FDD) (Release 5), 3GPP TS 25.213 V5.2.0 (Sep. 2002), 28 pages.

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