MIMO OFDM channel estimation based on RLS algorithm

The time- versus frequency-domain implementations

M. A. Saeed, B. M. Ali, S. Khatun, N. K. Noordin, Mahamod Ismail

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, exponentially-weighted recursive least squared (EW-RLS) channel estimation for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems is investigated. Channel estimation in time-domain (TD) as well as frequency-domain (FD)is investigated through exploiting preambles and pilot symbols inserted in TD and FD, respectively. The channel is assumed to be slowly time-varying frequency-selective, constant during one OFDM symbol but changing from symbol to symbol. Simulation results show that the TD EW-RLS estimator has better estimation performance in terms of the mean-squares error (MSE) and bit-error rate (BER), compared to FD EW-RLS estimation approach. The computational complexity is significantly reduced by recursively updating the channel estimates and by applying the matrix inversion lemma.

Original languageEnglish
Title of host publication2007 Asia-Pacific Conference on Communications, APCC
Pages547-550
Number of pages4
DOIs
Publication statusPublished - 2007
Event2007 Asia-Pacific Conference on Communications, APCC - Bangkok
Duration: 18 Oct 200720 Oct 2007

Other

Other2007 Asia-Pacific Conference on Communications, APCC
CityBangkok
Period18/10/0720/10/07

Fingerprint

Channel estimation
Orthogonal frequency division multiplexing
symbol
Mean square error
Bit error rate
Computational complexity
simulation
time
performance

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

Cite this

Saeed, M. A., Ali, B. M., Khatun, S., Noordin, N. K., & Ismail, M. (2007). MIMO OFDM channel estimation based on RLS algorithm: The time- versus frequency-domain implementations. In 2007 Asia-Pacific Conference on Communications, APCC (pp. 547-550). [4433546] https://doi.org/10.1109/APCC.2007.4433546

MIMO OFDM channel estimation based on RLS algorithm : The time- versus frequency-domain implementations. / Saeed, M. A.; Ali, B. M.; Khatun, S.; Noordin, N. K.; Ismail, Mahamod.

2007 Asia-Pacific Conference on Communications, APCC. 2007. p. 547-550 4433546.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Saeed, MA, Ali, BM, Khatun, S, Noordin, NK & Ismail, M 2007, MIMO OFDM channel estimation based on RLS algorithm: The time- versus frequency-domain implementations. in 2007 Asia-Pacific Conference on Communications, APCC., 4433546, pp. 547-550, 2007 Asia-Pacific Conference on Communications, APCC, Bangkok, 18/10/07. https://doi.org/10.1109/APCC.2007.4433546
Saeed MA, Ali BM, Khatun S, Noordin NK, Ismail M. MIMO OFDM channel estimation based on RLS algorithm: The time- versus frequency-domain implementations. In 2007 Asia-Pacific Conference on Communications, APCC. 2007. p. 547-550. 4433546 https://doi.org/10.1109/APCC.2007.4433546
Saeed, M. A. ; Ali, B. M. ; Khatun, S. ; Noordin, N. K. ; Ismail, Mahamod. / MIMO OFDM channel estimation based on RLS algorithm : The time- versus frequency-domain implementations. 2007 Asia-Pacific Conference on Communications, APCC. 2007. pp. 547-550
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