Title :
PAPR reduction in OFDM transmission using Hadamard transform
Author :
Park, Myonghee ; Jun, Heeyoung ; Cho, Jaehee ; Cho, Namslnin ; Hong, Daesik ; Kang, Changeun
Author_Institution :
Dept. of Electr. & Comput. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
An OFDM signal with large peak-to-average power ratio (PAPR) can cause power degradation (inband distortion) and spectral spreading (out-of-band radiation) by being clipped passing through a power amplifier. The PAPR characteristics are analyzed in two different aspects. From the foundation of the analysis, we propose Hadamard transform, which is ascribed to the relationship between the autocorrelation function and PAPR. Extensive computer simulations show that Hadamard transform is an effective technique to reduce PAPR
Keywords :
Hadamard transforms; OFDM modulation; correlation methods; electric distortion; fast Fourier transforms; inverse problems; power amplifiers; quadrature amplitude modulation; 16QAM; Hadamard transform; IFFT; OFDM signal; OFDM transmission; PAPR characteristics; PAPR reduction; autocorrelation function; computer simulations; inband distortion; inverse fast Fourier transform; multicarrier modulation; orthogonal frequency division multiplexing; out-of-band radiation; peak-to-average power ratio; power amplifier; power degradation; spectral spreading; Bandwidth; Bit error rate; Block codes; Computer simulation; Degradation; Fading; Filtering; Nonlinear distortion; OFDM modulation; Peak to average power ratio;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853355
