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Detail
Registered DEVICE FOR COMPENSATING RADIO FREQUENCY DISTORTION IN ORTHOGONAL FREQUENCY DIVISION MULTIPLE
- Inventors
- Jung Jaeho, Kwangchun Lee, Lee Sung Jun, Kim Joon Hyung, Kang Byung Su, Kwon Heon Kook
- Application No.
- 11527787 (2006.09.27)
- Publication No.
- 20070133698 (2007.06.14)
- Registration No.
- 7929639 (2011.04.19)
- Country
- UNITED STATES
- Project Code
- 05MM1100, Research on 4G Mobile Communications Technology, Hwang Seung Ku
- Abstract
- The present invention relates to a device for compensating a radio frequency distortion caused by a sample/hold operation of a digital/analog converter in an orthogonal frequency division multiplexing (OFDM) transmission system, and a method thereof. In a digital transmission system, an edge frequency signal of a transmission signal band is distorted by a sample/hold operation of a digital/analog converter such that a signal attenuation is generated at a frequency domain by a sync function having a zero point at a sample frequency of a transmission signal. In the present invention, the signal distortion may be compensated by multiplying a coefficient of an inverse sync function by a signal weight value at the frequency domain, and it may be compensated by using a single multiplier and a lookup table storing the coefficient of the inverse sync function.
- Family
| Status | Patent | Country | KIPRIS |
|---|---|---|---|
| Registered | 직교 주파수 분할 다중화 방식의 무선 시스템에서 고주파 왜곡 현상의 보상 장치 및 방법 | KOREA | KIPRIS |