An efficient memory-based FFT architecture
نویسندگان
چکیده
This paper proposes an efficient memory-based radix-2 FFT architecture, which greatly improves the memorybased FFT [5], [6] by reducing 50% memory size requirement, while maintaining a simple address generator. Specifically the memory size is reduced to 1.25N words. In addition, the multiplier utilization rate is 100%.
منابع مشابه
High throughput energy efficient multi - FFT architecture on FPGAs ( Draft ) ∗
To process high-rate streaming data, throughput is one of the key performance metrics for FFT design. However, high throughput FFT architectures consume large amount of power due to complex routing or excessive memory access. In this paper, we propose a Cooley-Turkey algorithm based, high throughput energy-efficient multi-FFT architecture. In the proposed architecture, we use multiple time-mult...
متن کاملDesign of a radix-8/4/2 FFT processor for OFDM systems
The FFT processor is a very important component in Orthogonal Frequency Division Multiplexing(OFDM) communication system. In this paper, we propose an efficient variable-length radix-8/4/2 FFT architecture for OFDM systems. The FFT processor is based on radix-8 FFT algorithm and also supports radix-4 or radix-2 FFT computation. The pipelined radix-8/4/2 butterfly unit computes radix-8 FFT algor...
متن کاملDesign of Area- and Power-Efficient Pipeline FFT Processors for 8x8 MIMO-OFDM Systems
We present areaand power-efficient pipeline 128and 128/64-point fast Fourier transform (FFT) processors for 8x8 multipleinput multiple-output orthogonal frequency multiplexing (MIMO-OFDM) systems based on the specification framework of IEEE 802.11ac WLANs. Our new FFT processors use mixed-radix multipath delay commutator (MRMDC) architecture from the point of view of low complexity and high mem...
متن کاملDesign and Implementation of A Scalable Fast Fourier Transform Core
A novel approach for scalable length Fast Fourier Transform (FFT) in single Processing Element (single PE) architecture has been developed. Scalable length FFT design meets the different lengths requirement of FFT operation in OFDM system [1]. An efficient mechanism that named Interleaved Rotated Data Allocation (IRDA) to replace multiple-port memory with single-port memory has also been propos...
متن کاملDesign of 2x2 Mimo OFDM Architecture for Fixed WIMAX
Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing technology is an advanced transmission technique for wireless communication systems. In this paper, the 64 point pipeline FFT/IFFT processor is introduced for efficient implementation of OFDM architecture. The IFFT processor is used to modulate the subcarrier in transmitter section and FFT processor demodulate the subcarr...
متن کامل