BER Analysis of PAM Communications over AWGN Channels

Zelong Yin; Yanxin Liu; Yuchen Wang; Jianing Wang; Jialang Lou; Yinqi Zhou

doi:10.6919/ICJE.202512_11(12).0006

Authors

Zelong Yin
Yanxin Liu
Yuchen Wang
Jianing Wang
Jialang Lou
Yinqi Zhou

DOI:

https://doi.org/10.6919/ICJE.202512_11(12).0006

Keywords:

Pulse Amplitude Modulation; AWGN; Bit Error Rate; SNR; MATLAB Simulation.

Abstract

This paper presents a detailed investigation into the performance of a Pulse Amplitude Modulation (PAM) communication system operating over an Additive White Gaussian Noise (AWGN) channel, utilizing comprehensive MATLAB simulations for validation. The core of the analysis focuses on evaluating Bit Error Rate (BER) trends under varying Signal-to-Noise Ratio (SNR) conditions. The obtained results clearly demonstrate PAM's inherent sensitivity to channel noise, particularly at low SNRs where high error rates are observed. Conversely, the analysis confirms significantly improved reliability and lower BER as the SNR increases. These simulation outcomes are thoroughly consistent with well-established theoretical expectations regarding PAM system behavior over noisy channels, thereby affirming the robustness of the implemented simulation model and methodology.

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References

[1] E. A. Lee and D. G. Messerschmitt, Digital communication. Springer Science & Business Media, 2012.

[2] F. Liu et al., "Ultralow photon flux OWC links using UV‐C single‐photon detection," Laser & Photonics Reviews, p. 2401804, 2025.

[3] F. Liu et al., "Ultra-sensitive UV solar-blind optical wireless communications with an SiPM," Optics Letters, vol. 48, no. 20, pp. 5387–5390, 2023/10/15 2023, doi: 10.1364/OL.503235.

[4] U. Schreiber, "Pulse-amplitude-modulation (PAM) fluorometry and saturation pulse method: an overview," Chlorophyll a fluorescence: a signature of photosynthesis, pp. 279–319, 2004.

[5] D. R. Pauluzzi and N. C. Beaulieu, "A comparison of SNR estimation techniques for the AWGN channel," IEEE Transactions on communications, vol. 48, no. 10, pp. 1681–1691, 2000.

[6] G. Forney, "Maximum-likelihood sequence estimation of digital sequences in the presence of intersymbol interference," IEEE Transactions on Information theory, vol. 18, no. 3, pp. 363–378, 2003.

[7] F. Liu et al., "10 Mbit/s UV Solar-Blind OWC at 30 Photons Per Bit," in 2024 Conference on Lasers and Electro-Optics (CLEO), 5–10 May 2024 2024, pp. 1–2.

[8] F. Liu et al., "Adaptive Modulation for High-Speed Mobile Visible Light Communications," in 2021 13th International Conference on Wireless Communications and Signal Processing (WCSP), 20–22 Oct. 2021 2021, pp. 1–6, doi: 10.1109/WCSP52459.2021.9613516.

[9] F. Liu, L. Wu, Z. Zhang, J. Dang, J. Wu, and L. Wan, Error rate performance of MIMO FSO communications for high-speed trains (International Conference on Optoelectronic and Microelectronic Technology and Application). SPIE, 2020.

[10] P. A. M. Dirac, The Collected Works of PAM Dirac: Volume 1: 1924-1948. Cambridge University Press, 1995.