A kernel-based soft BER estimator for coded QAM transmission systems

Poda, Pasteur; Tapsoba, Théodore; Saoudi, Samir; Chonavel, Thierry; Guilloud, Frédéric

doi:10.1109/isivc.2016.7894007

Cited by 1 publication

(2 citation statements)

References 13 publications

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“…In the kernel-based method [53], [54] the sample size required is smaller when compared to that of MC simulation for the same BER value. In this paper, the BER performance of SC-LDPC coded UWOC system has also been studied using the kernelbased PDF estimation [55], in addition to the MC simulation method. Let x i ∈ {0, 1} be the transmitted bits and let p + and p − denote the probability that x i is 1 and 0 respectively.…”

Section: B Ber Calculation Using Kernel-based Density Estimationmentioning

confidence: 99%

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Performance of Spatially Coupled LDPC Codes Over the Underwater Wireless Optical Channel With Strong Turbulence and Pointing Errors

Padala,

D’souza

2024

IEEE Access

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The major problems in an underwater wireless optical communication (UWOC) link are turbulence induced fading and pointing errors. In this paper, we have investigated the bit error rate (BER) performance of spatially coupled low-density parity-check (SC-LDPC) coded horizontal UWOC link over a strong turbulent channel model with pointing errors. The performance of this link for different channel and code parameters has been studied using simulations. It has been observed that a rate 1/2 ARJA protograph based SC-LDPC code with graph lifting factor of 256 gives a coding gain of 47 dB at a BER of 10 −4 for strong turbulence channel model with pointing errors. An analytical BER expression for UWOC link under strong turbulence with pointing errors for On-Off Keying modulation technique has been derived. A multidimensional protograph based extrinsic information transfer algorithm has been developed to obtain the decoding thresholds for different channel parameters and code rates. We have also studied the SC-LDPC coded vertical UWOC link performance for some specific strong turbulence channel parameters with pointing errors and observed that as the link length increases from 20 m to 40 m, the performance gap between the hypothetical and cascaded channel models increases from 1.1 dB to 5.5 dB.INDEX TERMS Bit error rate, Low-density parity-check codes, Pointing errors, Protograph, Scintillation index, Spatially coupled LDPC codes, Underwater optical wireless communication.

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Section: B Ber Calculation Using Kernel-based Density Estimationmentioning

confidence: 99%

“…where f + Y (respectively f − Y ) is the conditional PDF of Y such that x i = 1 (respectively x i = 0). The estimation of these conditional PDFs can be obtained by [55]…”

Section: B Ber Calculation Using Kernel-based Density Estimationmentioning

confidence: 99%

Performance of Spatially Coupled LDPC Codes Over the Underwater Wireless Optical Channel With Strong Turbulence and Pointing Errors

Padala,

D’souza

2024

IEEE Access

View full text Add to dashboard Cite

show abstract

A kernel-based soft BER estimator for coded QAM transmission systems

Cited by 1 publication

References 13 publications

Performance of Spatially Coupled LDPC Codes Over the Underwater Wireless Optical Channel With Strong Turbulence and Pointing Errors

Performance of Spatially Coupled LDPC Codes Over the Underwater Wireless Optical Channel With Strong Turbulence and Pointing Errors

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