Title :
DAPSK-OFDM transmissions for high date-rate digital mobile radio
Author :
Liu, Der-Zheng ; Wei, Che-Ho
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
In this paper, the OFDM transmission techniques with higher-level differential modulations are investigated for the high data-rate digital mobile radio. Two DAPSK-OFDM transmission systems using the differential encoding technique in time and frequency directions are investigated, respectively. The coherent, noncoherent and quasi-coherent demodulations of OFDM signals are introduced. The performance of DAPSK-OFDM transmission systems in the mobile radio environments are evaluated by computer simulations
Keywords :
OFDM modulation; amplitude shift keying; demodulation; differential phase shift keying; digital radio; mobile radio; DAPSK-OFDM transmissions; coherent demodulation; computer simulations; differential amplitude and phase shift keying; differential encoding technique; frequency direction; high date-rate digital mobile radio; higher-level differential modulations; noncoherent demodulation; quasi-coherent demodulation; time direction; Amplitude modulation; Convolution; Data engineering; Demodulation; Digital audio broadcasting; Digital modulation; Land mobile radio; OFDM modulation; Phase modulation; Quadrature amplitude modulation;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921096
