TUNABLE MIXED DECIMATION MULTIPATH DELAY FEEDBACK FOR RADIX 2K FFT.

The Decimation Multipath Delay Feedback (M2DF) is a technique for the radix 2k FFT, which eliminates the stand by time of arithmetic modules in computing units. In this paper tunable M2DF architecture is proposed. In this, tunable arithmetic units are utilized in place of conventional arithmetic units to overcome the under utilization of arithmetic units in conventional M2DF architecture. The results show that, the tunable M2DF technique utilizes the lesser number of LUTs and slice registers than the conventional M2DF technique. In addition, the proposed technique having advantage of high throughput with reduced delay and area compared with conventional M2DF.