基於平均符元錯誤率分析之混合 AF 與 DF 中繼網路方法

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彭瑞哲(Jui-Che Peng) 查詢紙本館藏

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通訊工程學系

論文名稱

基於平均符元錯誤率分析之混合 AF 與 DF 中繼網路方法
(Hybrid Amplify-and-Forward and Decode-and-Forward Relaying Method Based on Average Symbol Error Rate Analysis)

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摘要(中)

利用中繼站來擴大無線通訊覆蓋範圍為提升新一代行動網路傳輸效能的重要方法，
較常見的中繼站傳送機制為放大傳輸 (Amplify-and-Forward, AF) 與解碼傳輸 (Decode-and-Forward,
DF)。 AF 中繼站因為不需要複雜的編解碼，因此 AF 中繼運算雖具有低複雜度但亦存在雜訊累積的效應，而 DF
中繼法利用編解碼技術，在某些情況下可提升接收資料的可靠度。本文探討以 AF 與 DF
的傳輸錯誤機率模型作為選擇混合式中繼站策略的依據，我們分析了 BPSK 與 $M$-QAM 調變方式在此系統的錯誤率，並利用切爾諾夫邊界
(Chernoff bound) 取上界計算平均錯誤率，以利於中繼站可依此做傳輸策略的決策。

摘要(英)

Using relays is an important technique to expand communication
coverage in modern mobile communication systems. Amplify-and-Forward
(AF) and Decode-and-Forward (DF) are the most two popular strategies
in the relaying methods. AF has low complexity but the noise can be
amplified while in contrast, DF improves transmission reliability in
some situations using the coding scheme to suppress the noise.
In this paper, we explore the symbol error probabilities of the AF
and DF models for the hybrid AF/DF relaying strategy, in which the
BPSK and M-QAM modulation types are considered, along with
calculating the average bit error rate based on the Chernoff upper
bound.

關鍵字(中)

★ AF中繼器
★ DF中繼器
★ 中繼器
★ 平均符元錯誤率

關鍵字(英)

★ Amplify-and-forward
★ decode-and-forward
★ relay
★ average symbol error probability

論文目次

Contents
中文摘要 i
Abstract ii
Contents iii
Figure List v
Table List vi
1. 序論 1
1.1 前言 1
1.2 章節架構 5
2 Relay 用於 MIMO 傳輸系統之架構 6
2.1 系統架構 6
2.2 AF 和 DF中繼器 7
2.3 AF 與 DF 混合的中繼接收器 9
3 Relay 使用策略之決策法 13
3.1 混合 AF 與 DF 中繼網路策略 13
3.2 AF 中繼器的錯誤機率模型 14
3.3 DF 中繼器的錯誤機率模型 15
3.4 平均錯誤率 22
3.5 忽略直線通道情況 Case1 的錯誤率分析 30
4 系統模擬與結果分析 38
4.1 不同調變的錯誤率比較 39
4.2 不同通道增益的錯誤率比較 45
5 結論 56
附錄 A：AF、DF 錯誤率微分推導 57
參考文獻 62

參考文獻

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指導教授

張大中(Dah-Chung Chang)

審核日期

2015-8-24

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