Title :
SER evaluation of OFDM with Nyquist rate and oversampled clipping using estimated channel information
Author :
Wu, Bingyan ; Cheng, Shixin ; Wang, Haifeng ; Chen, Ming
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
Clipping is a popular method to overcome large peak-to-mean envelope power ratios (PMEPRs) in orthogonal frequency-division multiplexing (OFDM) systems, but it results in nonlinear distortion, which degrades signal detection performance. In this paper, clipping effects on signal detection with a simple channel estimation in OFDM are investigated, signal-to-noise and distortion ratio (SNDR) results of detected signals are derived, and symbol error rates (SERs) of clipped OFDM in frequency selective Rayleigh fading channels are evaluated. The evaluated SER results are supported by simulations.
Keywords :
OFDM modulation; Rayleigh channels; channel estimation; error statistics; nonlinear distortion; signal detection; Nyquist rate; OFDM; SER evaluation; channel estimation; estimated channel information; frequency selective Rayleigh fading channel; nonlinear distortion; orthogonal frequency-division multiplexing system; oversampled clipping; peak-to-mean envelope power ratio; signal detection performance; signal-to-noise and distortion ratio; symbol error rate; Channel estimation; Degradation; Discrete Fourier transforms; Frequency division multiplexing; Frequency domain analysis; Frequency estimation; Nonlinear distortion; OFDM; Peak to average power ratio; Signal detection;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on
Print_ISBN :
0-7803-8523-3
DOI :
10.1109/PIMRC.2004.1373893
