BROWSE
Detail
Registered COMPLEX MULTIPLIER AND TWIDDLE FACTOR GENERATOR
- Inventors
- Young Ha Lee, 박윤옥
- Application No.
- 11862055 (2007.09.26)
- Publication No.
- 20080140747 (2008.06.12)
- Registration No.
- 8161093 (2012.04.17)
- Country
- UNITED STATES
- Abstract
- The present invention relates to a complex multiplier and a twiddle factor generator. The complex multiplier according to an embodiment of the invention includes: a first adder/subtracter that adds the real part of the complex number and a first twiddle factor or subtracts the first twiddle factor from the real part of the complex number according to a first signal; a second adder/subtracter that adds the imaginary part of the complex number and a second twiddle factor or subtracts the second twiddle factor from the imaginary part of the complex number according to a second signal; a first multiplier that multiplies the value obtained by the first adder/subtracter by a third twiddle factor and outputs the resulting value; a second multiplier that multiplies the value obtained by the second adder/subtracter by a fourth twiddle factor and outputs the resulting value; a multiplexer that selectively outputs the values output from the first and second multipliers as a real part output signal and an imaginary part output signal according to a third signal; and a controller that provides the first to third signals. According to the present invention, it is possible to achieve a complex multiplier having a simple hardware design.
- KSP Keywords
- Complex Multiplier, Complex Number, Hardware Design, Imaginary part, twiddle factors