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Title |
Eliminate the Effects of Clipping Technique on the SER performance by Recovering the Clipped Part of the OFDM Signal |
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Author |
Ibrahim Ismail Al-kebsi, Mahamod Ismail, Kasmiran Jumari, T. A. Rahman |
| Citation |
Vol. 9 No. 7 pp. 37-45 |
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Abstract |
The simplest and most effective method to reduce PAPR might be the clipping and filtering [1], but the error performance of clipped OFDM signal is degraded due to the distortion of the original signals. The simplest and most effective method to reduce peak to average power ratio (PAPR) might be the clipping and filtering, but the error performance of clipped Orthogonal Frequency Division Multiplexing (OFDM) signal is degraded due to the distortion of the original signals. This paper suggests a simple solution to eliminate the degradation in the SER performance that caused by clipping the OFDM signal at the transmitter side by copying the clipped part of the OFDM signal and provide it to the receiver to recover the original signal. The delay in receiving the signal will be calculated to insure the receiver will be able to recognize and recover the clipped part of the original signal very well. With this proposed method there is freedom to use low clipping ratio (CR) and therefore it is easy to get efficient PAPR reduction. But it is better to choose the appropriate CR to avoid wasting the bandwidth by minimizing the amount of the copied part of the clipped signal. |
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Keywords |
Clipping Ratio, SER, PAPR, EVM, Power Amplifier, A/D converter.PAPR |
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