研究目的
Investigating optimal signal detection in the case of random sampling clock offset and when the receiver does not have any information on the instantaneous channel fading coef?cient.
研究成果
The proposed GLRT-based sequence blind detector for OOK signal detection, using Ns samplers at the receiver, can achieve performance close to the receiver with perfect synchronization and channel state information by adjusting the parameters Ns and L. However, the method's high computational complexity suggests the need for simplification for practical high-rate FSO system implementation.
研究不足
The computational complexity of the proposed method remains relatively high, requiring to calculate Ns×2L+1 possible states of the GLRT-based metric for detecting a sequence of L symbols.
1：Experimental Design and Method Selection:
The study proposes a GLRT-based sequence blind detector for OOK signal detection using Ns samplers at the receiver.
2：Sample Selection and Data Sources:
The system model considers an FSO transceiver with high mobility using IM/DD with OOK modulation.
3：List of Experimental Equipment and Materials:
The receiver uses multiple samplers (SPi) to sample the integrator output.
4：Experimental Procedures and Operational Workflow:
The proposed method performs block-by-block detection, gathering outputs of SPis in observation windows composed of L intervals.
5：Data Analysis Methods:
The performance of the proposed blind detection method is studied through BER plots and normalized mean-squared estimation error (MSE) for different values of Ns and L.
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