Radio communication system, transmission device, reception device, and communication method
US8503502B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2009 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | May 13, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2614
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A clipping rate is controlled in spectrum shaping according to a propagation path to thereby improve transmission characteristics and perform communication at a stable transmission rate.Propagation path characteristics are detected by a propagation path information detection unit 5 for detecting propagation path information fed back from a base station device and a water filling principle for distributing energy by a primary spectrum shaping unit 6 according to the propagation path characteristics is applied to transmission spectrum obtained by a DFT unit 4. Clipping information in secondary spectrum shaping fed back from the base station device is detected by a clipping information detection unit 7 to perform the secondary spectrum shaping by a secondary spectrum shaping unit 8. At this time, with the clipping rate by the secondary spectrum shaping unit 8, clipping rates of all transmission devices multiplexed in a scheduling unit 26 of the base station device are controlled adaptively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.