caa a22 4500 445296852 CHVBK 20180317142544.0 cr unu---uuuuu 170323e20100801xx s 000 0 eng 10.1007/s12243-010-0177-z doi (NATIONALLICENCE)springer-10.1007/s12243-010-0177-z Rotated precoder-based OFDM system robust to channel spectral nulls and with reduced PAPR [Elektronische Daten] [Xin-Lin Huang, Gang Wang, Fei Hu] Recently, the precoded orthogonal frequency division multiplexing (OFDM) was proposed to show robustness to intersymbol interference channels with spectral nulls. However, due to inserting (M-K) zeros between each two sets of K consecutive information symbols, the average transmitting power of the precoded OFDM system reduces by 10 log10 (M/K) dB compared with the conventional OFDM system. Under the same points, inverse fast Fourier transformation (IFFT), the precoded OFDM system has a higher peak-to-average power ratio (PAPR) compared with the conventional OFDM system. This paper proposes a rotated precoder-based OFDM system robust to channel spectral nulls and with reduced PAPR. The rotated precoder makes the N-point IFFT with N/2 zeros padded. Since half of the information symbols for IFFT are zeros, we have the PAPR reduced by 10 log10 2≈3 dB approximately, compared with the conventional precoded OFDM system. We also show that the proposed OFDM system has the same bit error rate (BER) performance as the conventional precoded OFDM system. Both theoretical performance analysis and simulation results are presented to verify the correctness of our theory analysis. Institut Télécom and Springer-Verlag, 2010 Spectral nulls nationallicence Bit error rate (BER) nationallicence Peak-to-average power ratio (PAPR) nationallicence Rotated precoder nationallicence Inverse fast Fourier transformation (IFFT) nationallicence Precoded OFDM nationallicence Huang Xin-Lin Communication Research Center, Harbin Institute of Technology, 150001, Harbin, People's Republic of China aut Wang Gang Communication Research Center, Harbin Institute of Technology, 150001, Harbin, People's Republic of China aut Hu Fei Department of Electrical and Computer Engineering, The University of Alabama, 35487, Tuscaloosa, AL, USA aut annals of telecommunications - annales des télécommunications Springer-Verlag 65/7-8(2010-08-01), 375-383 0003-4347 65:7-8<375 2010 65 12243 https://doi.org/10.1007/s12243-010-0177-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12243-010-0177-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huang Xin-Lin Communication Research Center, Harbin Institute of Technology, 150001, Harbin, People's Republic of China aut NATIONALLICENCE 700 1- Wang Gang Communication Research Center, Harbin Institute of Technology, 150001, Harbin, People's Republic of China aut NATIONALLICENCE 700 1- Hu Fei Department of Electrical and Computer Engineering, The University of Alabama, 35487, Tuscaloosa, AL, USA aut NATIONALLICENCE 773 0- annals of telecommunications - annales des télécommunications Springer-Verlag 65/7-8(2010-08-01), 375-383 0003-4347 65:7-8<375 2010 65 12243 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer