Title :
Unequal error protection QPSK modulation codes
Author :
Morelos-Zaragoza, Robert H. ; Lin, Shu
Author_Institution :
Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA
Abstract :
The authors use binary linear UEP (LUEP) codes, in combination with a QPSK signal set and Gray mapping, to obtain new efficient block QPSK modulation codes with unequal minimum squared Euclidean distances. They give several examples of codes that have the same minimum squared Euclidean distance as the best QPSK modulation codes of the same rate and length. A new suboptimal two-stage soft-decision decoding is applied to LUEP QPSK modulation codes
Keywords :
block codes; decoding; error correction codes; phase shift keying; Gray mapping; block QPSK modulation codes; liner unequal error protection codes; minimum squared Euclidean distance; suboptimal two-stage soft-decision decoding; Decoding; Digital communication; Error correction codes; Euclidean distance; Modular construction; Modulation coding; Noise level; Pulse modulation; Quadrature phase shift keying; Signal mapping;
Conference_Titel :
Singapore ICCS/ISITA '92. 'Communications on the Move'
Print_ISBN :
0-7803-0803-4
DOI :
10.1109/ICCS.1992.255087
