SER estimation method for 56 GBaud PAM-4 transmission system

Aadil Raza; Kangping Zhong; Salman Ghafoor; Saeed Iqbal; Muhammad Adeel; Shahid Habib; Muhammad Fasih Uddin Butt; Chao Lu

doi:10.3788/COL201816.040604

Journals >Chinese Optics Letters >Volume 16 >Issue 4 >Page 040604 > Article

Chinese Optics Letters
Vol. 16, Issue 4, 040604 (2018)

SER estimation method for 56 GBaud PAM-4 transmission system

Aadil Raza¹, Kangping Zhong^2、*, Salman Ghafoor^3、**, Saeed Iqbal¹, Muhammad Adeel², Shahid Habib¹, Muhammad Fasih Uddin Butt¹, and Chao Lu²

Author Affiliations

¹COMSATS Institute of Information Technology (CIIT), Islamabad, Pakistan

²Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong, China

³National University of Sciences and Technology (NUST), Islamabad, Pakistan

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DOI: 10.3788/COL201816.040604 Cite this Article Set citation alerts

Aadil Raza, Kangping Zhong, Salman Ghafoor, Saeed Iqbal, Muhammad Adeel, Shahid Habib, Muhammad Fasih Uddin Butt, Chao Lu. SER estimation method for 56 GBaud PAM-4 transmission system[J]. Chinese Optics Letters, 2018, 16(4): 040604 Copy Citation Text

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Abstract

In this Letter, we have proposed a generalized Gaussian probability density function (GGPDF)-based method to estimate the symbol error ratio (SER) for pulse amplitude modulation (PAM-4) in an intensity modulation/direct detection (IM/DD) system. Furthermore, a closed form expression of

{SER}_{GGD}

for PAM-4 has been derived. The performance of the proposed method is evaluated through simulation as well as experimental work. The fitting of probability density functions of the received signal is applied via GGPDF and shape parameters

P_{1}

and

P_{2}

associated with different PAM-4 levels are determined. The optimum single value of shape parameter

P

is then calculated to estimate the SER. The mathematical relationship of

P

with different received optical powers and receiver bandwidths has been determined and verified. The proposed method is a fast and accurate method to estimate SER of a PAM-4 system, which is more reliable and in agreement with the error counting method.