DocumentCode :
2518653
Title :
A Tone Reservation Method Combining Linear Clipping and PRT-Aided Detection Algorithm
Author :
Li, Zhanya ; Zhang, Wenyi ; Wang, Weidong
Author_Institution :
Dept. of Electron. Eng. Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China
fYear :
2011
fDate :
5-8 Sept. 2011
Firstpage :
1
Lastpage :
5
Abstract :
In tone reservation (TR) methods, the high peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals is reduced through exploiting the reserved tones, i.e., peak-reduction tones (PRT), so as to manipulate the clipping noise generated from the soft limiter with predefined clipping threshold. In this work, from the least-squares perspective, the PRT are designed with linear operation only and a corresponding clipping threshold is proposed by a simple closed-form formula. Furthermore, a PRT-aided detection algorithm for the receiver is proposed to exploit the information embedded in the PRT, which is a linear function of the data-tone signal. The data-tones and PRT are jointly and iteratively estimated to increase the accuracy of detection. No extra receive-side information is required in the proposed method. Simulation results reveal that a remarkable gain in bit error rate (BER) is achieved.
Keywords :
OFDM modulation; least mean squares methods; signal detection; BER; OFDM; PRT-aided detection algorithm; bit error rate; closed-form formula; least-squares perspective; orthogonal frequency division multiplexing; peak-reduction tones; peak-to-average power ratio; tone reservation method combining linear clipping; tone reservation methods; Bit error rate; Detection algorithms; Discrete Fourier transforms; Modulation; Noise; Peak to average power ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2011 IEEE
Conference_Location :
San Francisco, CA
ISSN :
1090-3038
Print_ISBN :
978-1-4244-8328-0
Type :
conf
DOI :
10.1109/VETECF.2011.6092843
Filename :
6092843
Link To Document :
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