Title :
The average power spectral density of cancellation noise in OFDM systems
Author :
Qiuyue Ji ; Xia Lei ; Zhengguang Zheng ; Lilin Dan ; Yue Xiao
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Peak cancellation is a widely used technique to reduce peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. However, peak cancellation, when implemented with a window function in time domain, will introduce in-band distortion and out-of-band radiation due to the nonlinear processing. In this paper, the average power spectral density of cancellation noise is analyzed and estimated by mathematical modeling. Simulation results show that the theoretical derivation can achieve a perfectly coincidence with the simulation result.
Keywords :
OFDM modulation; interference suppression; nonlinear distortion; OFDM systems; PAPR; cancellation noise; in-band distortion; mathematical modeling; nonlinear distortion model; orthogonal frequency division multiplexing; out-of-band radiation; peak cancellation; peak-to-average power ratio; power spectral density; window function; Frequency-domain analysis; Noise; Nonlinear distortion; Numerical models; Peak to average power ratio; Time-domain analysis;
Conference_Titel :
Communications, Circuits and Systems (ICCCAS), 2013 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4799-3050-0
DOI :
10.1109/ICCCAS.2013.6765187
