OFDM transmitting and receiving apparatus and OFDM transmitting and receiving method
US6747945B2 · kind B2 · utility
20Cited by
12References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2001 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Mar 20, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0007
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An average value of reception power of subcarriers A to D is calculated by a control circuit 162, and the average value is divided by envelops of received signals of subcarriers A to D, respectively, so as to calculate a coefficient signal of each subcarrier. Multipliers 106 to 109 multiply transmitting signals of subcarriers A to D output from mapping circuits 102 to 105 by the coefficient signals, respectively. Whereby, power between the subcarriers at a reception time can be maintained substantially constant so as to improve an error rate characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.