Design of Adaptive Beam Former Using 2 Dimensional Lattice Filters and Its Performance Verfication

二维格子滤波器自适应波束形成器设计及其性能验证

• 批准号: 10650377
• 负责人: HAMADA Nozomu
• 金额: $ 1.41万
• 依托单位: Keio University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650377/
• 关键词: Array signal processing; Adaptive Filter; Beam Forming; Direction-of-Arrival Estimation; Circular Array; Equalizer; Adaptive Algorithm; Echo Canceller; 到来方向推定; エコーキャンセラ; 方向推定; 音声処理; ノイズキャンセラ; ボルテラ形フィルタ; マイクロフォンアレイ

(1) A new method of adaptive beam forming which is robust against signal model errors and reduces computational load is established. In order to reduce the affection of the model errors, we deduce both blocking matrix and passing matrix based on the method of eigenvector constrained calibrated Generalized Sidelobe canceller in the time domain.(2) The microphone array system to estimate direction-of-arrival of speaker is proposed. It utilizes harmonic component such as vowel sound. It is effective under a directional noise and sensor noise.(3) A receiver using GMA adaptive array combined with Tapped Delay Line is proposed for frequency selective fading and co-channel interference suppression in DS/CDMA systems. We investigate the convergence behavior of the constrained CMA with three waves model. Based on analytical results, we propose a novel criterion to select a modulus factor of capturing desired signal successfully.(4) An estimation method of direction-of-arrival using Hopfield network with linear array is proposed. The proposed method is robust for sensor error. Additionally, the method is useful to estimate DOA of distributed source. These methods can give proper direction even the low SNR condition.(5) It is proposed that a digital channel equalizer using radial basis function (RBF) network which has identical structure to the optimal Bayesian symbol-detection. A clustering algorithm has been proposed to find the correct center of RBF. The simulation results show its better convergence and less calculation than the conventional algorithm.(6) A new algorithm for tap adaptation to search gradient by input correlation functions is proposed. This algorithm is used for echo cancellation in teleconference systems.

(1)建立了一种新的自适应波束形成方法，该方法对信号模型误差具有鲁棒性并减少了计算量。为了减少模型误差的影响，基于时域特征向量约束校准广义旁瓣对消器的方法，推导了阻塞矩阵和通过矩阵。(2)提出了估计说话人波达方向的麦克风阵列系统。它利用谐波成分，例如元音。 (3)针对DS/CDMA系统中的频率选择性衰落和同频干扰抑制问题，提出了一种采用GMA自适应阵列结合抽头延迟线的接收机。我们研究了三波模型约束 CMA 的收敛行为。基于分析结果，我们提出了一种新的准则来选择成功捕获期望信号的模因子。(4)提出了一种利用线阵Hopfield网络的波达方向估计方法。所提出的方法对于传感器误差具有鲁棒性。此外，该方法对于估计分布式源的 DOA 很有用。这些方法即使在低信噪比条件下也能给出正确的方向。(5)提出了一种采用径向基函数(RBF)网络的数字信道均衡器，其结构与最优贝叶斯符号检测相同。提出了一种聚类算法来找到正确的 RBF 中心。仿真结果表明该算法比传统算法具有更好的收敛性和更少的计算量。(6)提出了一种通过输入相关函数进行抽头自适应搜索梯度的新算法。该算法用于电话会议系统中的回声消除。

项目成果

H.Lin, M.Asharif, K.Yamashta: "The Two-Dimensional Extended Correlation Least Mean Squares (2-D) ECLMS Algorithm"Proc of IEEE Int. Conf on SMC, Tokyo. Vol.2. 900-903 (1999)

H.Lin、M.Asharif、K.Yamashta：“二维扩展相关最小均方 (2-D) ECLMS 算法”Proc of IEEE Int。

H. Lin, M. Asharif, K. Yamashita: "The Two-Dimensional Extended Correlation Least Mean Squares ECLMS Algorithm"Proc. of IEEE Int. Conf. on SMC. 900-903 (1999)

H. Lin、M. Asharif、K. Yamashita：“二维扩展相关最小均方 ECLMS 算法”Proc。

M.Asharif, T.Hayashi, K.Yamashita: "Correlation LMS Algorithm and Its Application to Double-Talk Echo Cancelling"IEE Electronics Letters. Vol.35, No.3. 1-2 (1999)

M.Asharif、T.Hayashi、K.Yamashita：“相关 LMS 算法及其在双讲回声消除中的应用”IEE 电子通讯。

K. Yamashita, A. Shimabukuro, M. Asharf, H. Miyagi: "Two-Dimensional Quadratic Volterra Filters Using-New Lattice Structure"Proc. of Int. Conf. on Nonlinear Science on the Border of Milleniums,. 56-56 (1999)

K. Yamashita、A. Shimabukuro、M. Asharf、H. Miyagi：“使用新晶格结构的二维二次 Volterra 滤波器”Proc。

笠見英男、浜田望: "線形拘束定包絡アルゴリズムを用いた線形適応CDMA受信機"電子情報通信学会論文誌 B-II. J81-B-II. 1149-1152 (1998)

Hideo Kasami、Nozomu Hamada：“使用线性约束恒包络算法的线性自适应 CDMA 接收器”IEICE Transactions B-II 1149-1152 (1998)。