Space-time transmit diversity scheme for time-dispersive propagation media
US7471734B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2002 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Jul 9, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03796
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention extends Alamouti's scheme for wideband TDMA systems; it then works in conjunction with time-domain equalization. In fact, the present invention envisages time-domain DFE or MLSE equalization (which is more robust than linear frequency-domain equalization) via the use of a training mid-amble to separate adjacent sub-blocks; this mid-amble is used in equalizer training and its direct and inter-symbol interference contributions to the received signal, are subtractively eliminated to facilitate the detection process itself. This approach may be applied to all systems in time-dispersive propagation media, where the burst or slot length is short enough that the fading can be considered time-invariant over its duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.