短距光传输系统中基于PAM4调制的带限接收技术

doi:10.11959/j.issn.1000-0801.2018091

Abstract

Abstract:

In intensity modulation and direct detection of the short distance optical transmission system,there is some serious ISI (inter symbol interference) for the detected PAM4 signal due to the band-limited performance for the optical devices.A band-limited compensation algorithm based on DFE (decision feedback equalizer) combined FTN (fast than Nyquist) transmission was proposed.Then the algorithm performance gain was simulated in different band-limited scenarios,and the simulation results show that this algorithm can be useful to demodulate PAM4 receiver signal.What is more,there is about 1 dB performance gain at the bit error rate (BER) of 10^-3for the serious conditions.

Key words: intensity modulation-direct detection, PAM4, band-limited channel, fast-than-Nyquist, ISI

CLC Number:

TN929.11

Qun LIU,Huiqin DU,Xianglin WU. A band-limited receiver technology based on PAM4 modulation for the short distance optical transmission system[J]. Telecommunications Science, 2018, 34(3): 118-123.

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References 12

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A band-limited receiver technology based on PAM4 modulation for the short distance optical transmission system

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