Title :
Half symbol OFDM modulation
Author :
Jiafang Kang ; Hongxing Wang ; Peilin Zhong ; Chuanhui Liu ; Zhiyong Zhao
Author_Institution :
Dept. of Electron. & Inf. Eng., Naval Aeronaut. & Astron. Univ., Yantai, China
Abstract :
Based on the symmetry characteristic of subcarriers in the traditional orthogonal frequency division multiplexing (OFDM) system, we propose a half symbol OFDM (HS-OFDM) modulation method to further improve the bandwidth efficiency of communication system, the method applicable to OFDM systems whose subcarriers are modulated by BPSK or PAM. The spectra overlap percentage of adjacent subcarriers is raised from 50% to 75%, and the bandwidth efficiency upper limit of the passband OFDM system is raised from 1Baud/Hz to 2Baud/Hz, which is twice the efficiency of the traditional OFDM system.
Keywords :
OFDM modulation; phase shift keying; pulse amplitude modulation; BPSK; HS-OFDM modulation method; PAM; bandwidth efficiency; half symbol OFDM modulation method; orthogonal frequency division multiplexing system; Bandwidth; Binary phase shift keying; Fourier transforms; Frequency modulation; OFDM; Time-frequency analysis;
Conference_Titel :
General Assembly and Scientific Symposium (URSI GASS), 2014 XXXIth URSI
Conference_Location :
Beijing
DOI :
10.1109/URSIGASS.2014.6929271
