Performance comparison of Selection Combining diversity receivers for different modulation schemes in OFDM system

2010 ◽  
Author(s):  
Nadia Nowshin ◽  
A K M Arifuzzman ◽  
Md. Anwar Hossain ◽  
Mohammed Tarique
Keyword(s):  
Performance Comparison ◽  
Selection Combining ◽  
Ofdm System ◽  
Modulation Schemes

scholarly journals Performance Comparison of Proposed Scheme Coded DWT-OFDM System with that of Conventional OFDM

2020 ◽  
Vol 19 ◽  
Keyword(s):  
Performance Comparison ◽  
Ofdm System ◽  
Matlab Software ◽  
Awgn Channel ◽  
Modulation Schemes ◽  
Better Than

In this paper, we have investigated the Proposed scheme coded DWT-OFDM system in comparison to conventional OFDM system over AWGN channel. 16, 32, 64 – QAM and PSK modulation schemes have been considered to evaluate the system. Moreover, two different wavelets have been used for examining the system. Simulations are performed using MATLAB software. It is found that proposed scheme based DWT-OFDM system performs better than conventional OFDM system under all the considered modulation schemes

scholarly journals Performance Comparison of Digitized Quaternion Modulation with other Modulation Schemes

2019 ◽  
Vol 27 ◽  
pp. 01004
Author(s):  
Anam Zahra ◽  
Qasim Umar Khan
Keyword(s):  
Global Positioning System ◽  
Gaussian Noise ◽  
Additive White Gaussian Noise ◽  
Performance Comparison ◽  
Superior Performance ◽  
Positioning System ◽  
Space Communication ◽  
Global Positioning ◽  
Simulation Results ◽  
Modulation Schemes

In wireless networks signal’s security from noise has been a very challenging issue, primarily because of the broadcast nature of communication. This paper focuses on digitized Quaternion Modulation (QM) which gives better performance as compared to QPSK, QAM and QFSK. We compare the performance of quaternion modulation with other modulation schemes in terms of BER using idealistic Additive White Gaussian Noise AWGN channel. This scheme can be used in applications such as Global Positioning System (GPS), satellite and space communication system to reduce errors. The simulation results show superior performance of the proposed digitized Quaternion Modulation over its counterparts. Thus one may trade off bandwidth for BER.

scholarly journals Theoretical CSPR Analysis and Performance Comparison for Four Single-Sideband Modulation Schemes With Kramers-Kronig Receiver

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 166257-166267 ◽  
Author(s):  
Dongxu Lu ◽  
Alan Pak Tao Lau ◽  
Chao Lu ◽  
Xian Zhou ◽  
Jiahao Huo ◽  
...  
Keyword(s):  
Performance Comparison ◽  
Single Sideband ◽  
Single Sideband Modulation ◽  
Modulation Schemes ◽  
And Performance

Performance Comparison of LS and LMMSE Channel Estimation Algorithm for CO-OFDM System

2011 ◽  
Vol 130-134 ◽  
pp. 2965-2968
Author(s):  
Zheng Rong Tong ◽  
Min Jie Guo ◽  
Xiu Feng Yang ◽  
Wei Hua Zhang
Keyword(s):  
Optical Fiber ◽  
Bit Error Rate ◽  
System Performance ◽  
Single Mode ◽  
Estimation Algorithm ◽  
Performance Comparison ◽  
Ofdm System ◽  
Fiber System ◽  
Single Mode Optical Fiber ◽  
Simulation Results

The CO-OFDM single-mode optical fiber system is constructed by the Matlab coupled with the Optisystem. And the influence of different channel algorithm on the receiver of system is researched. The simulation results show that the system performance is improved by using LS or LMMSE channel algorithm. And the LMMSE channel algorithm can provide better performance than the LS channel algorithm. Compared with LS algorithm, the required receiver OSNR is reduced by about 1 dB using improved LMMSE algorithm at bit-error-rate (BER) =10-4 in the CO-OFDM single-mode optical fiber system.

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