Skip to main content
SpringerLink
Log in

An improved optimal channel shortening algorithm for DMT modulation systems

  • Published:
Journal of Electronics (China)

Abstract

In Discrete Multi-Tone (DMT) modulation systems, the well-known technique to overcome the Inter-Carrier Interference (ICI)/Inter-Symbol Interference (ISI) caused by the inadequate Cyclic Prefix (CP) length is to use a Time-Domain Equalizer (TDE) at the receiver front-end. An algorithm used to calculate the coefficients of the optimal shortening Time Domain Equalizer (TDE) was given by Melsa. However, this algorithm requires that the length of the TDE must be smaller than or equal to the memory length of the target impulse response. This paper modifies this algorithm and makes it not only fit for calculating the coefficients of the TDE with arbitrary length, but also have a much less computational time.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. N. Al-Dhahir and J. M. Cioff. Efficiently computed reduced-parameter input-aided MMSE Equalizers for ML detection: A unified approach. IEEE Trans. on Info. Theory, 42(1996)3, 903–915.

    Article  MATH  Google Scholar 

  2. P. J. W. Melsa, R. C. Younce, and C. E. Rohrs. Impulse response shortening for discrete multi-tone transceivers. IEEE Trans. on Commun., 44(1996)12, 1662–1672.

    Article  Google Scholar 

  3. C. Yin and G. Yue. Optimal impulse response shortening for discrete multitone transceivers. IEE Electronics Letters, 34(1998)1, 35–36.

    Article  Google Scholar 

  4. R. Schur and J. Speidel. An efficient equalization method to minimize delay spread in OFDM/DMT systems. In Proc. IEEE International Conference on Communications. Helsinki, Finland, June 2001, 1–5.

  5. R. K. Martin, C. R. Johnson, M. Ding, and B. L. Evans. Infinite length results for channel shortening equalizers. In Proc. IEEE signal Proc. Adv. In wireless Commun. (SPAWC), Rome, Italy, June 2003, 15–18.

  6. T. K. Moon and W. C. Stirling. Mathematical Methods and Algorithms for Signal Processing. NJ, Prentice Hall, 2000, 283–285.

  7. B. Farhang-Boroujeny and M. Ding. Design methods for time-domain equalizers in DMT transceivers. IEEE Trans. on Commun., 32(2001)3, 554–562.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Electronic Engineering, Nanjing University of Posts & Telecommunications, Nanjing, 210003, China

    Liu Shuisheng & Shen Yuanlong

Authors
  1. Liu Shuisheng
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Shen Yuanlong
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Liu Shuisheng.

About this article

Cite this article

Liu, S., Shen, Y. An improved optimal channel shortening algorithm for DMT modulation systems. J. Electron.(China) 24, 748–752 (2007). https://doi.org/10.1007/s11767-006-0088-3

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11767-006-0088-3

Key words

CLC index

Search

Navigation