Wireless Communications
OFDM for Wireless Communications Systems
OFDM for Wireless Communications Systems
RF Power Amplifiers for Wireless Communications, Second Edition (Artech House Microwave Library (Hardcover))
Optimality Condition for Selected Mapping in OFDM
IEEE Transactions on Signal Processing
Superimposed training for OFDM: a peak-to-average power ratio analysis
IEEE Transactions on Signal Processing - Part I
Power savings analysis of peak-to-average power ratio in OFDM
IEEE Transactions on Consumer Electronics
Computers and Electrical Engineering
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Orthogonal frequency division multiplexing (OFDM), the multicarrier modulation technique with high bandwidth efficiency and robustness against multipath fading, is used in several high-speed broadband communication systems including digital video broadcasting (DVB), digital audio broadcasting (DAB), asymmetric digital subscriber line (ADSL), wireless local area network (WLAN IEEE 802.11a,g), high performance radio local area network (HIPERLAN 2), and worldwide interoperability for microwave access (WiMAX IEEE 802.16). However, the transmit signal in OFDM system has a high peak-to-average power ratio (PAPR), one of the major drawbacks of multicarrier transmission, and therefore high dynamic range is required in both the digital to analog converter (DAC) and the power amplifier (PA) for proper operation. Otherwise, the nonlinearities of PA cause out-of-band distortion and increase in bit error rate (BER). Therefore, the reduction in PAPR in OFDM system is desirable in order to obtain power efficiency and increase BER performance. In this paper, a new parametric PAPR reduction technique, L"2-by-3 transform from sliding norm transform (SNT) family is proposed. Based on its parameter, a significant PAPR reduction is obtained. This paper presents the analysis of power saving and computational complexity of the proposed method L"2-by-3 and comparison to two other methods; selected mapping and partial transmit sequence.