Abstract
To minimize transmitting power, an adaptive resource allocation algorithm is proposed for multi-user multiple input multiple output-orthogonal frequency division multiplexing (MIMO-OFDM) downlink with correlated channels, which, based on the user's grouping according to their spatial correlations, combines the shared manner and the exclusive manner to allocate sub-carriers. Between different groups the shared manner with a null steering method based on group marginal users is applied, whereas within a group the exclusive manner is applied. The simulations show that the power efficiency and spectral efficiency are improved; the base station transmitting antenna number and the computational complexity is decreased.
| Original language | English |
|---|---|
| Pages (from-to) | 301-305 |
| Number of pages | 5 |
| Journal | Frontiers of Electrical and Electronic Engineering in China |
| Volume | 3 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 2008 |
Keywords
- Adaptive resource allocation
- Co-channel interference (CCI)
- MIMO-OFDM
- Multi-user
- Null steering
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