Title :
High data rate transmission with 64-DAPSK over fading channel
Author :
Liu, Kaiming ; Wang, Wenbo ; Liu, Yuan´an
Author_Institution :
Center for Wireless Commun., Beijing Univ. of Posts & Telecommun., China
Abstract :
In this paper a simplified differential amplitude demodulation scheme is proposed for 64-DAPSK (differential amplitude and phase shift keying), which needs less quantity of decision thresholds compared with the conventional schemes. The arithmetic mean threshold (AlMT) scheme is proposed and analyzed with the simplified system in AWGN and flat Rayleigh fading channels. By these proposed schemes, system complexity is reduced considerably, but no performance degradation occurs. In the case of channel coding, the concatenated code consisting of an inner convolutional code and an outer Reed-Solomon code can be applied to 64-DAPSK. Compared with coherent 64-QAM system which employs pilot symbols for channel estimation, 64- DAPSK can achieve the performance close to or even better than that of the former by utilizing the additional redundancy for outer coding, provided that the channel SNR is high enough.
Keywords :
AWGN channels; Rayleigh channels; Reed-Solomon codes; channel coding; channel estimation; computational complexity; concatenated codes; convolutional codes; differential phase shift keying; quadrature amplitude modulation; 64-DAPSK; AWGN channels; Reed-Solomon code; arithmetic mean threshold scheme; channel coding; channel estimation; computational complexity; concatenated code; convolutional code; data rate transmission; decision thresholds; differential amplitude demodulation scheme; flat Rayleigh fading channels; phase shift keying; pilot symbols; quadrature amplitude modulation; AWGN; Arithmetic; Channel coding; Concatenated codes; Convolutional codes; Degradation; Demodulation; Fading; Phase shift keying; Reed-Solomon codes;
Conference_Titel :
Wireless Communications and Networking Conference, 2004. WCNC. 2004 IEEE
Print_ISBN :
0-7803-8344-3
DOI :
10.1109/WCNC.2004.1311518
