naa a22 4500 510798071 CHVBK 20180411083344.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11277-013-1123-y doi (NATIONALLICENCE)springer-10.1007/s11277-013-1123-y Performance Comparison of Uncoded OFDM Systems with Trellis Shaping over Nonlinear Channels [Elektronische Daten] [Ryota Yoshizawa, Hideki Ochiai] Orthogonal frequency-division multiplexing (OFDM) can achieve remarkable performance in terms of spectral efficiency, but its power amplifier efficiency becomes poor because of its high peak-to-average power ratio (PAPR) nature of transmitted signals. Trellis shaping is an effective method to reduce peak and average power without signal distortion at the cost of transmitter complexity and its performance depends on the metric used for the trellis decoder. Several metrics, defined in either time or frequency domain, have been proposed in the literature. In many practical OFDM systems, however, slight nonlinearity is tolerable as long as the resulting distortion meets the system requirements such as bit error rate (BER) and spurious level of transmitted signals. In this paper, we make a thorough performance comparison of trellis-shaped uncoded OFDM systems with different metrics in terms of complexity, achievable PAPR, and resulting BER as well as power spectrum in a practical channel where the signal envelope is distorted by a power amplifier (PA). Our study shows that the metric designed in frequency domain is mostly favorable in such a scenario. Springer Science+Business Media New York, 2013 Orthogonal frequency division multiplexing (OFDM) nationallicence Bit error rate (BER) nationallicence Trellis shaping (TS) nationallicence Peak-to-average power ratio (PAPR) nationallicence Power amplifier (PA) nationallicence Yoshizawa Ryota Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, 240-8501, Yokohama, Kanagawa, Japan aut Ochiai Hideki Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, 240-8501, Yokohama, Kanagawa, Japan aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/3(2013-10-01), 1603-1617 0929-6212 72:3<1603 2013 72 11277 https://doi.org/10.1007/s11277-013-1123-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1123-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yoshizawa Ryota Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, 240-8501, Yokohama, Kanagawa, Japan aut NATIONALLICENCE 700 1- Ochiai Hideki Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya, 240-8501, Yokohama, Kanagawa, Japan aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/3(2013-10-01), 1603-1617 0929-6212 72:3<1603 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer