Title :
Noncoherent Block-Coded QAM
Author :
Ruey-Yi Wei ; Tzu-Ching Sue ; Hsi-Hua Wang ; Chin-Sung Wang
Author_Institution :
Nat. Central Univ., Jhongli
Abstract :
In this paper, we investigate block-coded QAM constructed by multilevel coding for the noncoherent generalized likelihood ratio test (GLRT) detector. For the AWGN channel, we derive a new GLRT detector and the corresponding distance. The minimum noncoherent distance of block-coded QAM is derived and two construction of noncoherent block-coded QAM (NBC-QAM) are proposed accordingly. In the NBC-QAM scheme, the error performance can be optimized by adjusting the constellation. The superior error performances of NBC-QAM are verified by simulation results.
Keywords :
AWGN channels; block codes; channel coding; modulation coding; quadrature amplitude modulation; AWGN channel; error performance; noncoherent block-coded QAM; noncoherent generalized likelihood ratio test detector; AWGN channels; Block codes; Cities and towns; Communications Society; Constellation diagram; Detectors; Phase detection; Quadrature amplitude modulation; Testing; Turbo codes;
Conference_Titel :
Communications, 2007. ICC '07. IEEE International Conference on
Conference_Location :
Glasgow
Print_ISBN :
1-4244-0353-7
DOI :
10.1109/ICC.2007.147
