Abstract
Analysing the channel model of space-time multiuser detection in multipath CDMA channels, this paper confirms to the condition of channel impulse response matrix. The users, mean square error is defined in a new form, and the optimal factor is achieved by using a steepest descent algorithm. Estimating the related parameter of iterative formula, this paper presents a less complex space-time multiuser detection algorithm in multipath CDMA channels. The algorithm does not require to solve for the matrix's inverse, save for a much less complex iterative parameter. The new algorithm reduces the complexity remarkably compared with the classical linear MMSE algorithm. Simulation results illustrate that the new algorithm can offer stable convergence and good detection performance.
| Original language | English |
|---|---|
| Pages (from-to) | 350-353 |
| Number of pages | 4 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 23 |
| Issue number | 3 |
| Publication status | Published - Jun 2003 |
Keywords
- Array antenna
- Direction of arrival
- Minimum mean square error
- Space-time multiuser detection