查詢結果分析
相關文獻
- 有交互藕合效應下的陣列天線信號處理
- 應用於行動通訊之簡易式靜態週期性陣列天線
- 低互感圓形微帶天線設計分析
- 同軸線饋入微帶天線雙頻操作特性之研究
- Gain Optimization of an Auto-shaped Parasitic Array Using the Genetic Algorithm
- 應用傳統基板(FR4)設計之高頻縫天線
- 高頻電波束形成器模組之製作與量測
- 雜訊干擾源偵測系統原理介紹
- 運用B-弧線與基因演算法合成陣列天線之場形
- A Beamspace-Time Approach to CCI/ISI Cancellation for Sectored Wireless Communications
頁籤選單縮合
| 題 名 | 有交互藕合效應下的陣列天線信號處理=Adaptive Array with Mutual Coupling Present |
|---|---|
| 作 者 | 柳茂林; | 書刊名 | 遠東學報 |
| 卷 期 | 25:4 2008.12[民97.12] |
| 頁 次 | 頁609-615 |
| 分類號 | 448.813 |
| 關鍵詞 | 陣列天線; 干擾源; 交互藕合效應; 最小均方根演算法則; 定模數演算法則; Adaptive array; Interferer; Mutual coupling effect; Least mean square algorithm; Constant modulus algorithm; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 在通訊系統中,陣列天線常被使用來去除干擾源增加接收的效能,當天 線元件間有交互藕合效應時,信號的入射角向量就會受影響而無法有效準確 的估測出信號的方位,因此陣列天線的效能將會變差,收斂速度會變的緩慢 許多,在本篇論文中提出一種能解決交互藕合效應的陣列天線演算法則來修 正信號方位向量的失真,以提升系統的接收效能,在本方法中,先將陣列天 線的輸入向量乘以交互藕合矩陣,來補償方向向量的失真,在得出準確的信 號方位後,再利用最小均方根演算法則去估測陣列天線的權重值,因此,本 方法可有效提升在有交互藕合效應下的最小均方根演算法則的收斂速度,增 加其效能,此外,在無訓練數列傳送的系統中,通常會以定模數演算法則來 找出陣列天線的最佳權重值,使用本方法亦可有效提升此種盲目演算法則在 有交互藕合效應影響下的系統效能。 |
| 英文摘要 | Adaptive array has been used to cancel the interferers and improve the performance of the communication. The phase vector of the signal will disturb by the mutual coupling effect and the arrival angle of the desired signal cannot be estimated correctly. Therefore, the convergent rate of the performance for the adaptive array will be decreased. A novel algorithm of the adaptive array is proposed to solve the problem of the mutual coupling effect and promote the performance of the system. In the novel algorithm, it multiplied the input signal vector by the mutual coupling matrix to compensate the distortion of the signal phase vector. The least mean square (LMS) algorithm of the new method is found by this modified input signal vector. Thus, the novel algorithm can improved the convergent rate of the LMS for adaptive array. Besides, a constant modulus algorithm (CMA) has been employed to find the weights of the adaptive array in case of no training signal transmitted. In this paper, a novel blind algorithm is also proposed to improve the convergent rate of the CMA for adaptive array. |
本系統中英文摘要資訊取自各篇刊載內容。