Performance of phase shift keying modulation with rotated signal constellation over Ricean fading channels

2006 ◽  
Author(s):  
S. Ozyurt ◽  
O. Kucur ◽  
I. Altunbas
Keyword(s):  
Phase Shift ◽  
Fading Channels ◽  
Phase Shift Keying ◽  
Ricean Fading ◽  
Signal Constellation ◽  
Shift Keying

Performance Comparison between DPSK and OQPSK modulation approaches in multi environments channels with Matlab Simulink models

2019 ◽  
Vol 7 (1) ◽  
pp. 30-39
Author(s):  
Fatima faydhe Al- Azzawi ◽  
Faeza Abas Abid ◽  
Zainab faydhe Al-Azzawi
Keyword(s):  
Phase Shift ◽  
Fading Channels ◽  
Additive White Gaussian Noise ◽  
Block Codes ◽  
Performance Comparison ◽  
Phase Shift Keying ◽  
Differential Phase Shift ◽  
Matlab Simulink ◽  
Communication Industry ◽  
Shift Keying

Phase shift keying modulation approaches are widely used in the communication industry. Differential phase shift keying (DPSK) and Offset Quadrature phase shift keying (OQPSK) schemes are chosen to be investigated is multi environment channels, where both systems are designed using MATLAB Simulink and tested. Cross talk and unity of signals generated from DPSK and OQPSK are examined using Cross-correlation and auto-correlation, respectively. In this research a proposed system included improvement in bit error rate (BER) of both systems in  the additive white Gaussian Noise (AWGN) channel, by using the convolutional and block codes, by increasing the ratio of energy in the specular component to the energy in the diffuse component (k) and  the diversity order BER in the fading channels will be improved in both systems.    

scholarly journals Modulation diversity for differential amplitude and phase shift keying technique

2017 ◽  
Vol 7 (1.1) ◽  
pp. 418
Author(s):  
M Kanthimathi ◽  
R Amutha ◽  
S Anusha
Keyword(s):  
Phase Shift ◽  
Fading Channels ◽  
Differential Detection ◽  
Phase Shift Keying ◽  
Differential Phase Shift ◽  
Differential Phase ◽  
Differential Phase Shift Keying ◽  
Shift Keying ◽  
Modulation Diversity ◽  
Energy Consumption Simulation

Modulation diversity can reduce the bit error rate in fading channels. We make use of the advantage of modulation diversity in non-coherent differential modulation technique. Increase in modulation diversity is obtained by rotating signal constellation. Coordinate interleaved Differential amplitude and phase-shift keying modulation (DAPSK) is particularly advantageous compared to the Differential phase-shift keying (DPSK) technique. Energy optimization is done to minimize the energy consumption. Simulation results shows that the proposed differential detection for different rotation angle achieves better BER performance than constant phase differential detection with modulation diversity.The energy required to successfully transmit a bit is also reduced for proposed system compared to Differential phase shift keying based system.

Error rate performance analysis of power domain NOMA over AWGN and fading channels with generalized space shift keying in wireless 5G

2020 ◽  
pp. 1-6
Author(s):  
K. Murali ◽  
S. Siva Perumal
Keyword(s):  
Performance Analysis ◽  
Phase Shift ◽  
Fading Channels ◽  
Error Rate ◽  
Phase Shift Keying ◽  
High Data ◽  
Power Domain ◽  
Shift Keying ◽  
Reliability And Robustness ◽  
The Impact

The Non-Orthogonal Multiple Access (NOMA) emerged as a latest solution to demand of high data rated with excellent reliability and robustness. In this paper, the performance analysis of the NOMA under fading channel is presented with emphasis on error rate calculations. In addition, the focus is on exploring the impact of various modulation techniques like binary phase shift keying (BPSK), Quadrature Phase Shift Keying (QPSK) and Generalized Space Shift Keying (GSSK). The simulation study has been performed on MATLAB tool and results are analyzed efficiently in the metrics of NOMA.

scholarly journals Application of Broadband Signals to Increase Interference Immunity in Channels with Inter-Symbol Interference

2021 ◽  
Vol 2096 (1) ◽  
pp. 012046
Author(s):  
V K Fedorov ◽  
E G Balenko ◽  
S V Dvornikov ◽  
O S Lauta
Keyword(s):  
Phase Shift ◽  
Fading Channels ◽  
Noise Immunity ◽  
Phase Shift Keying ◽  
Practical Application ◽  
Interference Immunity ◽  
Shift Keying ◽  
Rice Fading ◽  
Inter Symbol Interference

Abstract Proposals for improving the noise immunity of receiving phase-shift keying signals in the conditions of inter-symbol interference caused by fading in the channel are presented. The use of Barker sequences for the expansion of modulating information pulses has been substantiated. The results of evaluating the noise immunity of Rice fading channels at various ratios of the effective voltages of the regular and diffuse signal components are presented. Proposals for the practical application of the results obtained are formulated.

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