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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Gacanin, H. Takaoka, S. Adachi, F. |
| Copyright Year | 2006 |
| Description | Author affiliation: Dept. of Electr. & Commun. Eng., Tohoku Univ., Sendai (Gacanin, H.; Takaoka, S.; Adachi, F.) |
| Abstract | The OFDM signals have a problem of high peak-to-average power ratio (PAPR). Hence, a large transmit-power backoff or amplitude clipping is required. The amplitude clipping causes signal degradation and the BER performance increases. A trade-off between the PAPR reduction and the BER performance is present; the PAPR reduces as the level of clipping reduces, but the BER degrades due to signal distortion. Recently, we proposed OFDM combined with time division multiplexing (OFDM/TDM) to alleviate the high PAPR problem, while achieving better BER performance than OFDM. In this paper, a theoretical bit error rate (BER) analysis of clipped OFDM/TDM system in a frequency-selective fading channel is developed. The average BER performance is evaluated by numerical computation using the derived conditional BER and by computer simulation. It is shown that OFDM/TDM can significantly reduce the amplitude clipping level and the required average signal energy per bit-to-AWGN power spectrum density ratio $E_{b}/N_{o}$ for the given BER in comparison to conventional OFDM. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 115626 |
| Page Count | 5 |
| File Format | |
| ISBN | 1424400627 |
| DOI | 10.1109/VTCF.2006.326 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2006-09-25 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | OFDM Time division multiplexing Bit error rate Peak to average power ratio Degradation Nonlinear distortion Power engineering and energy Frequency-selective fading channels Computer simulation High power amplifiers |
| Content Type | Text |
| Resource Type | Article |
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