博碩士論文 92523008 詳細資訊




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姓名 王進松(Chin-Sung Wang)  查詢紙本館藏   畢業系所 通訊工程學系
論文名稱 具頻寬效益之非同調調變
(Spectrally Efficient Noncoherent Modulations)
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摘要(中) Warrier和 Madhow在2002年提出對於非同調通訊使用振幅/相位星座圖的廣義可能性機率測試(GLRT)法和趨近最佳化的低複雜度檢測演算法。他們也提出ㄧ種用於振幅/相位星座圖的能量限制方法。根據由GLRT檢測法所得到的最小非同調距離,吾人提出新的用於兩層振幅星座圖的能量控制方法來得到比原始的能量控制方式還要好的錯誤效能。吾人亦提出用於三層振幅的非同調編碼調變的方法更進ㄧ歩改善其錯誤效能
摘要(英) In 2002, Warrier and Madhow proposed generalized likelihood ratio test (GLRT) detection and near-optimal low complexity detection algorithm for noncoherent communication using amplitude/phase constellations. They also proposed an energy constraint method for amplitude/phase constellations. According to the minimum noncoherent distance for GLRT detection, we propose new energy control methods for two amplitude-level constellations to get better error performance than the original energy constraint method. We also propose three amplitude-level noncoherent coded modulation methods to further improve the error performance.
關鍵字(中) ★ 頻寬效益
★ 非同調
★ ML檢測
★ GLRT檢測
★ 能量限制
關鍵字(英) ★ noncoherent
★ ML detection
★ GLRT detection
★ energy constraint
★ spectrally efficient
論文目次 1 Introduction 1
2 Reviews of GLRT Detection And Code Design for Amplitude/Phase Modulation 4
2.1 GLRT Detection And Its Noncoherent Metric 4
2.1.1 GLRT Detection 5
2.1.2 Overlapped Block Encoding 6
2.1.3 Differential Modulation 8
2.1.4 GLRT Noncoherent Metric 10
2.2 Differential Amplitude/Phase Modulation And Near-Optimal
Demodulation 13
2.2.1 Differential Amplitude/Phase Modulation 13
2.2.2 Near-Optimal Demodulation 20
2.3 Simulation Result 23
3 Noncoherent Code Design for Two Amplitude Levels Constellations 26
3.1 16-MAPSK Code Design 26
3.2 L-type Energy Constraint Method 30
3.3 O/E-type Energy Constraint Method 32
3.4 Simulation Result 34
4 Noncoherent Code Design And Decoding Algorithms For Three Amplitude Levels Constellations 51
4.1 Three Levels MAPSK Noncoherent Code Design 51
4.2 Decoding Algorithms for Multi-Amplitude Levels 58
4.3 Simulation Result 63
5 Conclusions 90
Bibliography 91
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指導教授 魏瑞益(Ruey-Yi Wei) 審核日期 2005-7-21
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