OFDM system with reverse link interference estimation
US7860176B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2005 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Oct 31, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0643
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A new method of performing interference estimation to allow the data packets to be efficiently delivered in an OFDM system. The interference estimation is performed on average over each frame for each mobile station individually in both frequency and time domains. Based on the estimated interference, the CIR can be determined by the BTS based on channel response estimates made by the BTS, or by the MS based on channel response estimates made for the uplink assuming a symmetrical channel. Numerical results show that the CIR estimation error could be very small if a sub-channel is considered as the minimum transmission unit. In terms of the aggregate throughput, the interference estimation method can provide a significant gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.