A Modified FFT Algorithm for OFDM Based Wireless System
G. Harish Kumar1, S. Srikanth2

1G. Harish Kumar, Assistant Professor, MRECW, Secunderabad (Telangana), India.

2S. Srikanth, Assistant Professor, MRECW, Secunderabad (Telangana), India.

Manuscript received on 22 December 2020 | Revised Manuscript received on 12 January 2020 | Manuscript Published on 23 January 2020 | PP: 10-14 | Volume-9 Issue-2S5 December 2019 | Retrieval Number: B10031292S519/2019©BEIESP | DOI: 10.35940/ijitee.B1003.1292S519

Open Access | Editorial and Publishing Policies | Cite | Zenodo | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: The constrained open range and the wastefulness in the range use in a fixed range task strategy, requests another correspondence model to abuse the present remote range unquestionably. This new structures connection point of view is accumulated as bleeding edge sifts through moreover as Dynamic Spectrum Access (DSA) and shrewd radio systems. The FFT and its turn IFFT are fundamental estimations in signal overseeing, programming portrayed radio, and the most encouraging change framework for example Symmetrical OFDM. From the normal organization of OFDM we can locate to FFT/ IFFT modules expect the essential work for any OFDM based handset. So when zero respected wellsprings of data/yields overpower nonzero inputs/yields, by then wide IFFT/FFT estimation for OFDM is never again supportive in term of implementation moment It is conceivable to decrease the implementation moment with “pruning” the FFT. In this we have finished a novel and significant data zero searched for after FFT pruning (IZTFFTP) estimation subject to DIF radix-2 framework. Separate from different estimations, the yielded outcome of IZFFTP show that it is free of condition of the zero respected data what’s everything the all the more keeping up a reasonable exchange off among reality bizarreness of any structure by not just diminishing the extent of complex extension correspondingly a comparative number of sided advancements what’s more. The proposed join is executed in essential level PC program for example in C++and this takes after the Cooley-Tukey radix-2 FFT estimation, holding all the key highlights, for example, straightforwardness and consistency, by making some assortment and programming adjustment.

Keywords: Cognitive Radio, OFDM, FFT, Pruning Techniques, Execution Time.
Scope of the Article: Algorithm Engineering