Joint design of interpolation filters and frequency equalizers in DMT systems for xDSL applications

Author

Cheng, Mu-Huo ; Lu, Pey-Huah ; Wu, Jia-Fu

Author_Institution

Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

3

fYear

2005

fDate

18-23 March 2005

Abstract

We formulate the joint design of interpolation filter and frequency equalizer in DMT systems as a problem for minimization of the mean square error between the input data symbol and its output estimate. Then, an iterative algorithm is proposed for the solution. Each iteration requires only solving two quadratic minimizations; the algorithm also ensures convergence. Simulations for VDSL applications demonstrate that an increment in transmission rate can be achieved compared with the conventional design of the interpolation filter and frequency equalizer separately.

Keywords

FIR filters; convergence; digital subscriber lines; equalisers; interpolation; iterative methods; mean square error methods; minimisation; DMT systems; FIR filter; VDSL; convergence; discrete multitone modulation; frequency equalizers; interpolation filters; iterative algorithm; mean square error minimization; quadratic minimizations; transmission rate increase; xDSL; Analog-digital conversion; Control engineering; Equalizers; Filters; Frequency estimation; Interpolation; Iterative algorithms; Mean square error methods; OFDM modulation; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2005. Proceedings. (ICASSP '05). IEEE International Conference on

ISSN

1520-6149

Print_ISBN

0-7803-8874-7

Type

conf

DOI

10.1109/ICASSP.2005.1415718

Filename

1415718