Abstract
An improved soft-input soft-output (SISO) minimum mean-squared error (MMSE) detection method is proposed for joint coding and precoding OFDM systems under imperfect channel estimation. Compared with the traditional mismatched detection which uses the channel estimate as its exact value, the signal model of the proposed detector is more accurate and the influence of channel estimation error (CEE) can be effectively mitigated. Simulations indicate that the proposed scheme can improve the bit error rate (BER) performance with fewer pilot symbols.
| Original language | English |
|---|---|
| Pages (from-to) | 757-761 |
| Number of pages | 5 |
| Journal | IEICE Transactions on Communications |
| Volume | E93-B |
| Issue number | 3 |
| DOIs | |
| State | Published - 2010 |
Keywords
- Channel estimation error
- Iterative decoding
- Precoded OFDM
- Soft-input soft-output detection
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