Mutual Information and Error Probability of Dual-Polarized Systems

2007 ◽  
Author(s):  
C. Oestges ◽  
B. Clerckx
Keyword(s):  
Mutual Information ◽  
Error Probability ◽  
Dual Polarized

Robustness Analysis of QIM Watermarking against Additional Noise

2011 ◽  
Vol 225-226 ◽  
pp. 601-604
Author(s):  
Gao Rong Zeng ◽  
Jian Ming Liu ◽  
Ai Wen Jiang
Keyword(s):  
Mutual Information ◽  
Bit Error Rate ◽  
Gaussian Noise ◽  
Error Probability ◽  
Robustness Analysis ◽  
Information Function ◽  
Uniform Noise ◽  
Additional Noise ◽  
Information Method ◽  
Mutual Information Function

A mutual information function was defined as a criterion measuring the robustness of watermarking algorithm. Considering QIM scheme, error probability of watermarking can be calculated to validate the measurement of mutual information function. By mean of numerical computation, mutual information under Gaussian noise and uniform noise is calculated with change of noise standard deviation. In the experiment, an audio section is selected as the host and their third lever wavelet detail coefficients are quantified according to watermark bit series. Experiment results show that statistic Bit Error Rate (BER) is matched with evaluation conclusion of mutual information method when step is on the small side. Mutual information function can be selected as a cost function to evaluate the robustness of watermarking algorithm, and predict the BER.

scholarly journals Performance Analysis of SPSK with Dual Polarized Transmit Antennas over Rayleigh Fading Channel

2018 ◽  
Vol 1 ◽  
pp. 58-61
Author(s):  
Malarvizhi Subramani ◽  
Arumbu Vanmathi Neduncheran ◽  
Vijayakumar Ponnusamy
Keyword(s):  
Performance Analysis ◽  
Fading Channel ◽  
Error Probability ◽  
Rayleigh Fading ◽  
Rayleigh Fading Channel ◽  
Extended Version ◽  
Shift Keying ◽  
Dual Polarized ◽  
Space Polarization ◽  
Dual Polarized Antenna

In this paper, the Space Polarization Shift Keying (SPSK) system, which is an extended version of Space Shift Keying (SSK) and includes both space and polarization dimensions with dual polarized antennas, is studied. The capacity and error probability analysis of SPSK for different polarization configurations are dealt with over the Rayleigh fading channel with a rich scattering environment. The analysis conducted shows that the SPSK with a dual polarized antenna (DP) offers better results than SPSK with a single orthogonal polarized antenna SPSK(SP), under non-LOS conditions. SPSK(DP) outperforms SSK by 4.2 dB over the correlated Rayleigh fading channel at 3 bits/s/Hz.

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