Improved Time Domain Equalization for Adsl 1 Improved Time Domain Equalization for Adsl

نویسندگان

  • Katleen Van Acker
  • Geert Leus
  • Marc Moonen
  • Stan Claes
  • Olivier van de Wiel
چکیده

| An improved optimization algorithm for the time domain equalizer (TEQ) is developed in case of Frequency Division Multiplexing-based Asymmetric Digital Subscriber Line (FDM-ADSL). In contrast with existing algorithms, our algorithm explicitly disregards the unused tones in the optimization function as well as in the non-triviality constraint. Some simulation results are presented for the upstream channel. It is shown that the achievable bitrate is higher than with a classical algorithm which imposes a unit norm constraint on the full target impulse response (TIR).

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Improved initialization for time domain equalization in ADSL

An improved optimization algorithm for the time domain equalizer (TEQ) is developed for discrete multitone (DMT) based asymmetric digital subscriber line (ADSL). In contrast with existing algorithms, our algorithm explicitly disregards the unused tones in the cost function as well as in the non-triviality constraint. Simulation results are presented for the upstream channel. It is shown that th...

متن کامل

Improved Time-domain Equalizer Initialization Algorithm for Adsl Modems

In this paper, we propose an improved adaptive initialization algorithm for the time domain equalizer in an FDM-based Asymmetric Digital Subscriber Line (ADSL). Using our developed approach, higher convergence rate than that of the commonly used Least-Mean Square algorithm is obtained, whilst attaining bit rates close to the optimum Maximum Shortening SNR and the upper bound Match Filter Bound ...

متن کامل

Performance Comparison of Time-Domain Equalization (TEQ) Techniques in a Discrete Wavelet Multitone (DWMT) System for Asymmetric Digital Subscriber Line (ADSL)

A Discrete Wavelet Multitone (DWMT) transceiver is proposed for the Asymmetrical Digital Subscriber Line (ADSL) channel, which promises greater subchannel spectral containment, as compared to the Fourier transform based conventional Discrete Multitone (DMT) system. Wavelet packet transform applied in DWMT system is robust against narrowband interference and impulse noise. It is also spectrally ...

متن کامل

Advanced Algorithms for Equalization on Adsl Channel

Digital subscriber line modems equalize response of line (channel) to fight with interferences and line dispersion which down the bit-rate of transmission. Main equalization principle is “Channel shortening” which is the base for time domain equalizers (TEQ). Many TEQ algorithms have been already proposed, mainly in theoretical sense. With growth of hardware performance, more complex methods ca...

متن کامل

Single-Carrier Frequency-Domain Equalization for Orthogonal STBC over Frequency-Selective MIMO-PLC channels

In this paper we propose a new space diversity scheme for broadband PLC systems using orthogonal space-time block coding (OSTBC) transmission combined with single-carrier frequency-domain equalization (SC-FDE). To apply this diversity technique to PLC channels, we first propose a new technique for combining SC-FDE with OSTBCs applicable to all dispersive multipath channels impaired by impulsive...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997