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| Content Provider | IET Digital Library |
|---|---|
| Author | Marinello, José Carlos Ciriaco, Fernando Abrão, Taufik |
| Abstract | Multiuser transmission (MuT) can be carried out at the base station of a multiple-input–multiple-output system for mitigating the downlink multiuser interference, achieving a near-single-user performance at the mobile terminals. These MuT systems can be designed for optimising different performance metrics, such as the bit-error-rate (BER), which is the focus of this study. In order to mitigate the MuT's complexity, a convex formulation for the minimum BER (MinBER) optimisation problem is proposed, by employing some slight modifications on its original formulation. The authors have shown that the novel convex formulation makes the application of some optimisation algorithms very efficient, leading to a reduced complexity and enabling the system operation in higher dimensions. Indeed, the authors also show that in these conditions the MinBER–MuT system presents the most noticeable gains in performance. The results demonstrate that, among the investigated techniques, the proposed Line Search Quasi-Newton algorithm relying on the penalty function approach results in the best performance versus complexity trade-off in the context of high capacity multiuser systems. |
| Starting Page | 1960 |
| Ending Page | 1967 |
| Page Count | 8 |
| ISSN | 17518628 |
| Volume Number | 9 |
| e-ISSN | 17518636 |
| Issue Number | Issue 16, Nov (2015) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/9/16 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.1228 |
| Journal | IET Communications |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Base Station Antenna Bit-error-rate Minimisation Convex Formulation Convex Programming Downlink Multiuser Interference Electromagnetic Compatibility Error Statistics Interference Interpolation And Function Approximation Line Search Quasi-newton Algorithm MinBER Optimisation Problem MinBER-MuT System Mobile Communication Mobile Radio System Mobile Terminals Multiple-input-multiple-output Communication Multiple-input-multiple-output System Multiuser Transmission Scheme MuT Newton Method Numerical Analysis Optimisation Technique Penalty Function Approach Performance Metrics Radio Frequency Interference Radio Link |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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