Joint optimization of subcarriers allocation and Tone Reservation PAPR reduction for OFDMA systems

In this paper, we consider the problem of resource allocation and high Peak-to-average Power Ratio (PAPR) for the downlink of an orthogonal frequency division multiplexing access (OFDMA) system. A joint optimization method for subcarriers allocation and Tone Reservation PAPR reduction is proposed, w...

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Bibliographic Details
Published in2012 IEEE 14th International Conference on Communication Technology pp. 1172 - 1176
Main Authors Limian Gao, Gaojun Song, Xiaofeng He, Renze Luo
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2012
Subjects
Adaptive subcarriers allocation
OFDMA
PAPR
TR technique
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Summary:In this paper, we consider the problem of resource allocation and high Peak-to-average Power Ratio (PAPR) for the downlink of an orthogonal frequency division multiplexing access (OFDMA) system. A joint optimization method for subcarriers allocation and Tone Reservation PAPR reduction is proposed, where a portion of subcarriers are reserved to reduce the PAPR. And then the adaptive subcarriers allocation technology is applied to the OFDMA systems to enhance the throughput. The proposed joint algorithm achieves better performance in PAPR reduction and total throughput than the other independent algorithms. The simulation results show that the proposed TR technique with adaptive subcarriers allocation in OFDMA systems can effectively reduce the PAPR. And subject to power, bit error rates (BER) and rate proportionality constraints, it also maximizes the throughput.
ISBN:1467321001
9781467321006
DOI:10.1109/ICCT.2012.6511374