DocumentCode :
30724
Title :
Using guard interval signal to improve tone reservation method for peak-to-average power ratio reduction in orthogonal frequency division multiplexing systems
Author :
Sohtsinda, Hermann ; Bachir, Smail ; Perrine, Clency ; Duvanaud, Claude
Author_Institution :
SIC Dept., Univ. of Poitiers, Futuroscope Chasseneuil, France
Volume :
9
Issue :
6
fYear :
2015
fDate :
8 2015
Firstpage :
476
Lastpage :
483
Abstract :
Although orthogonal frequency division multiplexing is adopted by many standards in wireless communication systems, it generates high peak fluctuations which are affected by radio frequency circuit non-linearities, reducing the power efficiency and the network quality of service. In recent years, tone-reservation using null subcarriers (TRNS) scheme has been proposed to reduce the level of these fluctuations, measured by the peak-to-average power ratio (PAPR). However, TRNS performances only depend on the available number of null subcarriers in the current standards. In this study, a new scheme to improve TRNS performances by including the samples of the guard interval signal within the parameters of the optimisation algorithm is proposed, allowing higher PAPR reduction gain and requiring no side information. Simulations under the wireless local area network IEEE 802.11a standard show that the new method does not violate the specified spectrum mask and achieves a higher PAPR reduction gain compared to TRNS method. Also, the evaluation of bit error rate and error vector magnitude under additive white Gaussian noise and Rayleigh fading channels shows a comparable level of the quality of communication between the two schemes.
Keywords :
AWGN channels; OFDM modulation; Rayleigh channels; optimisation; quality of service; wireless LAN; IEEE 802.11a standard; PAPR reduction; Rayleigh fading channels; TRNS method; TRNS performances; additive white Gaussian noise; guard interval signal; network quality of service; null subcarriers; orthogonal frequency division multiplexing systems; peak-to-average power ratio reduction; radio frequency circuit nonlinearities; tone reservation; tone reservation method; wireless communication systems; wireless local area network;
fLanguage :
English
Journal_Title :
Signal Processing, IET
Publisher :
iet
ISSN :
1751-9675
Type :
jour
DOI :
10.1049/iet-spr.2014.0288
Filename :
7175101
Link To Document :
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