Abstract
We propose a low-complexity dual-diagonal (DD-) linear-minimum-mean-square- error (LMMSE) channel estimation algorithm for orthogonal frequency-division multiplexing (OFDM) systems involving iterative channel estimation and signal detection. Computational complexity and mean-square-error (MSE) analysis are presented to evaluate the efficiency of the proposed algorithm. A closed-form expression is derived for the asymptotic MSE of the DD-LMMSE channel estimator. Both analysis and numerical results show that DD-LMMSE performs close to the well-known LMMSE estimator with much lower complexity. © 1991-2012 IEEE.
| Original language | English |
|---|---|
| Article number | 6210399 |
| Pages (from-to) | 4734-4746 |
| Journal | IEEE Transactions on Signal Processing |
| Volume | 60 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2012 |
Research Keywords
- Channel estimation
- dual-diagonal LMMSE (DD-LMMSE) estimation
- linear-minimum-mean-square-error (LMMSE)
- orthogonal frequency division multiplexing (OFDM)
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