TY  - EJOU
AU  - Ajitha, C. 
AU  - Jaya, T. 

TI  - Field Programmable Gate Arrays (FPGA) Based Computational Complexity Analysis of Multicarrier Waveforms
T2  - Intelligent Automation \& Soft Computing

PY  - 2022
VL  - 34
IS  - 2
SN  - 2326-005X

AB  - Multicarrier waveforms with enhanced spectral efficiency, low latency, and high throughput are required for 5G wireless networks. The Orthogonal Frequency Division Multiplexing (OFDM) method is well-known in research, but due to its limited spectral efficiency, various alternative waveforms are being considered for 5G systems. In the recent communication world, NOMA (non-orthogonal multiple access) plays a significant part due to its wider transmission of data with less bandwidth allocation. Even if a high data rate can be attained, the transmission problem will arise due to the spread of multiple paths. In order to reduce complexity and area utilization, a novel PL-based FWFT (Fast walsh hadamard fourier transform) technique is proposed and implemented in the VLSI architecture. To achieve a high-performance system, the main concept of pass transistor logic (PL) with VLSI implementation is to diminish the size and power consumption. Finally, the performance of the proposed FWFT/ IFWFT implementation has been evaluated. For FPGA’s 16-point FWFT, the number of transistors decreased by 21% and the total power required was reduced by 5.5%. The same implementation for 34 transistor-pass-logic customs and power consumption is 2.764 mW with a latency of 78.256 ns. As a consequence, the proposed system achieves low power, area and low complexity system that can enhance the function of the multicarrier waveform systems.
KW  - Fast walsh hadamard fourier transform; FPGA; pass logic transistor; multiple input multiple outputs

DO  - 10.32604/iasc.2022.021984