Approved for public release; distribution is unlimited / The IEEE 802.11a standard uses a coded orthogonal frequency division multi-plexing (COFDM) scheme in the 5-GHz band to support data rates up to 54 Mbps. The COFDM was chosen because of its robustness to multipath fading affects. In the stan-dard, convolutional codes are used for error correction. This thesis examines the perform-ance of the COFDM system with variable rate Reed-Muller (RM) error correction codes with a goal to reduce the peak-to-average power ratio (PAPR). Contrary to the expecta-tions, RM codes did not provide expected improvement in PAPR reduction. Peak clip-ping and Hanning windowing techniques were investigated in order to reduce the PAPR. The results indicate that a tradeoff exists between the PAPR and the bit-error rate (BER) performance. Although peak clipping yielded considerable reduction in PAPR, it required high signal-to-noise ratios. On the other hand, Hanning windowing provided only a small reduction in PAPR with reasonable BER performance. / Lieutenant Junior Grade, Turkish Navy
| Identifer | oai:union.ndltd.org:nps.edu/oai:calhoun.nps.edu:10945/1626 |
| Date | 03 1900 |
| Creators | Tezeren, Serdar U. |
| Contributors | Tummala, Murali, Cristi, Roberto, Naval Postgraduate School (U.S.)., Electrical and Computer Engineering |
| Publisher | Monterey California. Naval Postgraduate School |
| Source Sets | Naval Postgraduate School |
| Detected Language | English |
| Type | Thesis |
| Format | xvi, 135 p. : ill. (some col.) ;, application/pdf |
| Rights | Copyright is reserved by the copyright owner. |
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