Abstract
Log-likelihood-ratio (LLR) ordered successive interference cancellation (SIC) scheme is analyzed in multi-user, multi-mode, multi-input multi-output (MIMO) systems in which each user may choose between two operation modes: spatial multiplexing or beamforming. The main idea is to detect and cancel the user signal in order of LLR which provides a posteriori information about the reliability of detection. The simulation results indicate that LLR-ordered SIC provides 1 ∼ 3 dB gain over the conventional SNR-ordered SIC in multiuser MIMO system and the gain increases with increasing number of users.
| Original language | English |
|---|---|
| Pages (from-to) | 837-839 |
| Journal | IEEE Communications Letters |
| Volume | 12 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 2008 |
| Externally published | Yes |
Research Keywords
- Log-likelihood ratio
- Multi-user MIMO
- Successive interference cancellation
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