公开(公告)号：KR101332850B1

公开(公告)日：2013-11-27

申请号：KR1020120103452

申请日：2012-09-18

Applicant: 한국항공대학교산학협력단

Inventor： 정윤호 ,  정성욱 ,  장수현

IPC: G06F17/14

CPC classification number: G06F17/142 ,  H04B2201/70727

Abstract: The present invention relates to a fast fourier transform apparatus and method for multiple input output orthogonal frequency division multiplexing (MIMO-OFDM) system which can reduce the complexity of a hardware without the yield of the system to change as the minimum nontrivial multiplication uses the variable-length operation of 64~512 point while it supports the multiple channel input. The Institute of Electrical and Electronics Engineers (IEEE) 802 which can minimize the hardware complexity even when it's completely supporting 64/128/256/512 point variable-length operation through the mixed-radix (MR) algorithm, the twiddle factor (TF) nontrivial multiplication optimization, and a simplified data mapping, it can also support the variable band width of 20MHz, 40MHz, 80MHz, 160MHz while having data path of 8.@11ac. It has an effect that the performing apparatus of 11ac wireless LAN-system can be implemented in line with the optimum efficiency. [Reference numerals] (110) Data mapping module;(120) Butterfly module [R4BM];(130) Butterfly module [R2BM];(140) Butterfly module [R8BM1];(150) Butterfly module [R8BM2];(160) Data rearrangement module

Abstract translation: 本发明涉及一种用于多输入输出正交频分复用（MIMO-OFDM）系统的快速傅立叶变换装置和方法，其可以降低硬件的复杂度，而不会随着系统的收益而改变，因为最小非平凡乘法使用变量 长度操作为64〜512点，同时支持多通道输入。 电气和电子工程师协会（IEEE）802，即使通过混合基（MR）算法完全支持64/128/256/512点可变长度运算，旋转因子（TF） 平滑的乘法优化和简化的数据映射，还可以支持20MHz，40MHz，80MHz，160MHz的可变带宽，同时具有数据路径8. @ 11ac。 具有能够按照最佳效率实现11ac无线LAN系统的执行装置的效果。 （120）蝴蝶模块[R4BM];（130）蝴蝶模块[R2BM];（140）蝴蝶模块[R8BM1];（150）蝴蝶模块[R8BM2];（160） 数据重排模块