Design and implementation of a simulator for the analysis of bit error rates by using orthogonal Frequency Division Multiplexing

Underwater communication is of great consequence for a number of subaqueous operations and applications. The rise in the area of undersea applications like ecological control, discoveries and defense depend on reliable transfer of real-time or stored data. Data communication in this area is one of the biggest challenges. This paper presents a model, designed and simulated for Rician and Rayleigh channels using Orthogonal Frequency Division Multiplexing (OFDM) for underwater communication. Bit Error Rate (BER) for single transreceiver, multiple transreceiver, multipath, multiple delay and different path gains have been computed. Performances for various wavelet filters have been identified. MATLAB environment is used to evaluate the OFDM models and BER computation.

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Design and implementation of application‐specific instruction‐set processor design for high‐throughput multi‐standard wireless orthogonal frequency division multiplexing baseband processor

IET Circuits Devices & Systems ◽

10.1049/iet-cds.2014.0046 ◽

2015 ◽

Vol 9 (3) ◽

pp. 191-203 ◽

Cited By ~ 1

Author(s):

Mahmoud Abdel All ◽

Hanan M. Hassan ◽

Medhat Hamdy ◽

Omar A. Nasr ◽

Karim Mohamed ◽

...

Keyword(s):

High Throughput ◽

Orthogonal Frequency Division Multiplexing ◽

Frequency Division Multiplexing ◽

Instruction Set ◽

Frequency Division ◽

Processor Design ◽

Specific Instruction ◽

Design And Implementation ◽

Baseband Processor ◽

Application Specific

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Performance Analysis of Selective Mapping in Underwater Acoustic Orthogonal Frequency Division Multiplexing Communication System

Engineering, Technology & Applied Science Research ◽

10.48084/etasr.3941 ◽

2021 ◽

Vol 11 (1) ◽

pp. 6696-6702

Author(s):

W. Raza ◽

X. Ma ◽

A. Ali ◽

A. Raza ◽

...

Keyword(s):

Fading Channels ◽

Communication Networks ◽

Orthogonal Frequency Division Multiplexing ◽

Average Power ◽

Error Rates ◽

Frequency Division Multiplexing ◽

Frequency Division ◽

Underwater Communications ◽

Nonlinear Distortions ◽

Selective Mapping

Under-Water Acoustic (UWA) communication networks are commonly formed by associating various independent UWA vehicles and transceivers connected to the bottom of the sea with battery-operated power modems. Orthogonal Frequency Division Multiplexing (OFDM) is one of the most vital innovations for UWA communications, having improved data rates and the ability to transform fading channels into flat fading. Moreover, OFDM is more robust on Inter-Symbol and Inter-Carrier Interferences (ISI and ICI respectively). However, OFDM technology suffers from a high Peak to Average Power Ratio (PAPR), resulting in nonlinear distortions and higher Bit Error Rates (BERs). Saving power of battery deployed modems is an important necessity for sustainable underwater communications. This paper studies PAPR in UWA OFDM communications, employing Selective Mapping (SLM) as a tool to mitigate PAPR. The proposed SLM with the oversampling factor method proves to be less complex and more efficient. Simulation results indicate that SLM is a promising PAPR reduction method for UWA OFDM communications reducing BER.

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Design and implementation of low power encoder incorporating adaptive modulation for multi user OFDM system

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i1.9.9732 ◽

2018 ◽

Vol 7 (1.9) ◽

pp. 41

Author(s):

K Jayaram ◽

Dr C.Arun

Keyword(s):

Wireless Communication ◽

Low Power ◽

Communication System ◽

Orthogonal Frequency Division Multiplexing ◽

Adaptive Modulation ◽

Frequency Division Multiplexing ◽

Frequency Division ◽

Ofdm System ◽

Wireless Communication System ◽

Design And Implementation

Wireless communication system is a key element in modern uninterupted data tramsnission and reception services. In this paper, multi user Orthogonal Frequency Division Multiplexing (OFDM) system is designed with low power encoder and adaptive modualtion architectures. The proposed multi user encoder architecture is designed in Verlog HDL and simulated in Modelsim simulator. Xilinx Project Navigator is used to evaluate the performance of the proposed architecture interms of power consumptions and hardware utilizations by implementing the architecture on different virtex processors.

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