Abstract
Generally, adaptive modulation requires precise channel estimation and channel state information feedback. In a wireless channel, a large portion of total transmitting information is occupied by the feedback information due to the frequent adaptation to time-varying channel attenuation. In this paper, we propose an adaptive multicarrier system which adopts reduced feedback information for wireless application. This scheme is based on the general bit loading pouring algorithm, and suggests that the channel state information can be unified to the fractional number of loaded bits and it can be feedbacked differentially. In addition, we apply a linear predictor to reduce the degradation during the feedback interval.
| Original language | English |
|---|---|
| Pages (from-to) | 2880-2884 |
| Number of pages | 5 |
| Journal | IEEE Vehicular Technology Conference |
| Volume | 5 |
| Publication status | Published - 1999 |
| Event | Proceedings of the 1999 VTC - Fall IEEE VTS 50th Vehicular Technology Conference 'Gateway to 21st Century Communications Village' - Amsterdam, Neth Duration: 1999 Sept 19 → 1999 Sept 22 |
All Science Journal Classification (ASJC) codes
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics