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On the Bit Error Rate Fluctuation Induced by Multipath Interference in the Coherent Regime for Intra Data Center Applications

Wing-Chau Ng, Scott Yam

Abstract

We theoretically explain how multipath interference resizes PAM-4 constellation in the coherent regime and thus increases bit error rate fluctuation in intra data centers for the first time.

On the Bit Error Rate Fluctuation Induced by Multipath Interference in the Coherent Regime for Intra Data Center Applications

Abstract

We theoretically explain how multipath interference resizes PAM-4 constellation in the coherent regime and thus increases bit error rate fluctuation in intra data centers for the first time.
Paper Structure (6 sections, 1 equation, 3 figures)

This paper contains 6 sections, 1 equation, 3 figures.

Table of Contents

  1. Introduction
  2. Formulation
  3. Phase-offset induced constellation dilation and contraction
  4. Simulation Results
  5. Conclusion
  6. Acknowledgement

Figures (3)

  • Figure 1: Impact of phase offset on Euclidean distance (a) $\Phi = 0\pi$ (b) $\Phi = 0.5\pi$ (c) $\Phi = 1\pi$ for $L = 0.1L_c$. U.I.: unit interval (symbol duration).
  • Figure 2: Impact of phase offset $\Phi$ on BER over SIR (a) $L = 0.1 L_c$ (b) $L = 1 L_c$ (c) $L = 10 L_c$ at SNR = 18dB.
  • Figure 3: BER results for different number of symbols for simulation: (a) 230,000 symbols (b) 450,000 symbols symbols (c) 900,000 symbols