Title :
Performance of a class of adaptive data-driven echo cancellers
Author :
Im, Gi Hong ; Un, Chang Kwan ; Lee, Jae Chon
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
fDate :
12/1/1989 12:00:00 AM
Abstract :
A study is made of the performance of a class of adaptive data-driven echo cancellers (DDECs). The authors first investigate the interrelationship in a unified framework among the system equations of various data-driven echo cancellers. As a result, they obtain a new DDEC algorithm that consists of only one real-valued adaptive structure. The authors analyze and compare the convergence behavior of DDECs. They analyze their complexities when the least-mean-square (LMS) algorithm and the frequency-domain block LMS algorithm are used for adjusting the canceller weights. The results show that the echo canceller structure realized in the frequency domain has advantages in convergence rate and in implementation complexity as compared to existing DDEC structures
Keywords :
echo suppression; signal processing; adaptive data-driven echo cancellers; convergence rate; frequency-domain block LMS algorithm; implementation complexity; least-mean-square; real-valued adaptive structure; signal processing; Algorithm design and analysis; Convergence; Data communication; Echo cancellers; Equations; Frequency domain analysis; Least squares approximation; Passband; Sampling methods; Transmitters;
Journal_Title :
Communications, IEEE Transactions on
