Title :
Comparison of PSK and DPSK modulation in a coded OFDM system
Author :
Rohling, Hermann ; May, Thomas
Author_Institution :
Inst. of Telecommun., Tech. Univ. Braunschweig, Germany
Abstract :
Orthogonal frequency division multiplexing (OFDM) is often proposed for high data rate transmission over frequency-selective channels in order to simplify equalisation. In this paper 4- and 8-PSK and DPSK with coherent and non-coherent demodulation are considered for performance comparison. A channel estimation and equalisation is necessary for coherent demodulation whereas this effort is not required in the case of non-coherent detection. The performance comparison is made for convolutionally coded OFDM systems
Keywords :
Gaussian channels; channel coding; convolutional codes; demodulation; differential phase shift keying; frequency division multiplexing; modulation coding; multipath channels; parameter estimation; phase shift keying; signal detection; 4-PSK; 8-PSK; AWGN channel; DPSK; channel equalisation; channel estimation; coherent demodulation; convolutionally coded OFDM systems; frequency-selective channels; high data rate transmission; multipath channel; noncoherent demodulation; noncoherent detection; orthogonal frequency division multiplexing; performance; Bandwidth; Channel coding; Convolution; Convolutional codes; Decoding; Demodulation; Differential quadrature phase shift keying; Modulation coding; OFDM modulation; Phase shift keying;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.600453
