A Novel Two-Stage Fusion Detector Based on Maximum Ratio Combining and Max-Log Rules

• Main Authors: Wang, Shing-Chiuan, 王星筌
• Other Authors: Hung, Hsien-Sen
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/p4ubry

碩士 === 國立臺灣海洋大學 === 電機工程學系 === 106 === In wireless sensor network, decision fusion deals with transmitting decision symbols from multiple sensors over a wireless channel to a decision fusion center (DFC) for a final optimal decision. Multiple-input multiple-output (MIMO) channel between the sensors and the DFC is considered in order to improve fusion performance by coping with the deep fading problem. In this thesis, a novel two-stage decision fusion detector at the DFC is presented for a MIMO wireless sensor network. The proposed detector consists of the Maximum Ratio Combining (MRC) rule in the first stage and the Max-Log rule in the second stage. The multistage detector was motivated by complexity reduction while preserving the performance optimality of MRC and Max-Log rules. Simulation results have demonstrated that the proposed approach can assure the performance optimality over low and high signal-to-noise-ratio regime, while reducing computational complexity of the Max-Log rule.