Low Latency Ifft Design for Ofdm Systems
Journal Title: IOSR Journals (IOSR Journal of Electrical and Electronics Engineering) - Year 2018, Vol 13, Issue 3
Abstract
OFDM is a multi carrier modulation technique used in the various digital communication systems like 3G GSM, WiMAX, and LTE etc. The main advantage of this transmission technique is their hardiness to channel fading in wireless communication environment. Extensive connectivity, low latency and very high data transfer are the unique features of 5G networks. The digital audio Broadcasting, asynchronous digital subscriber line (ADSL) and high bit-rate digital subscriber line (HDSL) systems etc are some of the applications of OFDM in communication. Fast Fourier transform (FFT) and Inverse Fast Fourier Transform (IFFT) are two digital signal processing algorithm involved in OFDM system which are efficient for long instances in digital communication. The core processing block in an OFDM transmitter is the Inverse Fast Fourier Transform. For long instances, Single-Path Delay-Feedback (SDF) FFT architectures minimize required memory, which can dominate circuit area and power dissipation. The 8-point IFFT with radix-2 Single Delay Feedback algorithm have been analyzed for N=256 samples and incorporated in the design.
Authors and Affiliations
Shreenidhi B K, Roopashree . , Sharathchandra N R
Keywords
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