Aug, 2014
Resource Block Assignment to Reduce Peak to Average Power Ratio in Multi-User OFDM
IEICE TRANSACTIONS ON COMMUNICATIONS
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- Volume
- E97B
- Number
- 8
- First page
- 1689
- Last page
- 1700
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1587/transcom.E97.B.1689
- Publisher
- IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
This paper proposes the assignment of resource blocks (RBs) to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) in a multi-user OFDM system. This system ranks the users according to the channel state information (CSI) for RB assignment. In our proposed technique, an RB is assigned to either the first- or second-ranked mobile station (MS) to minimize the PAPR of the OFDM signal. While this process reduces the PAPR, the throughput is also reduced because of the user diversity gain loss. A PAPR-throughput trade-off is then established. Theoretical analyses and computer simulations confirm that when the number of MSs becomes large, the PAPR-throughput tradeoff is eased because of the minimal effect of the diversity gain loss. Therefore, significant PAPR reduction is achieved with only a slight degradation in the throughput.
- Link information
- ID information
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- DOI : 10.1587/transcom.E97.B.1689
- ISSN : 0916-8516
- eISSN : 1745-1345
- Web of Science ID : WOS:000342729400022