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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Baro, M. Ilow, J. |
| Copyright Year | 2007 |
| Description | Author affiliation: Dalhousie Univ., Halifax (Baro, M.; Ilow, J.) |
| Abstract | A new multi-node pruning algorithm is presented to overcome high peak-to-average power ratio (PAPR) of transmitted signals in multicarrier modulation systems such as orthogonal frequency division multiplexing (OFDM) and wavelet packet modulation (WPM). Specifically, a wavelet packet tree pruning technique with multiple node and multiple pass processing is proposed for the reduction of PAPR in WPM systems. Multiple tree structures are generated for the modulation of a given data input, and the output of tree with the smallest PAPR is selected for transmission. A full wavelet packet tree is dynamically pruned via joining of multiple non-leaf or non-terminal nodes to achieve a minimized PAPR. The information about the pruned tree is sent as side information similar to techniques such as selective mapping (SLM) in OFDM systems. Using a small level of redundancy for side information, the proposed scheme achieves significant reduction in PAPR at the expense of acceptable computational complexity. The complementary cumulative distribution function (CCDF) of the PAPR optimized signal shows about a 5 dB improvement over the original WPM signal. |
| Starting Page | 1 |
| Ending Page | 5 |
| File Size | 344120 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424411436 |
| DOI | 10.1109/PIMRC.2007.4394563 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-09-03 |
| Publisher Place | Greece |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Peak to average power ratio Wavelet packets OFDM modulation Filters Discrete wavelet transforms Quadrature amplitude modulation Phase shift keying Modulation coding Iterative algorithms Land mobile radio |
| Content Type | Text |
| Resource Type | Article |
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