Title :
Multilevel transmission technology for broadcasting data
Author :
Sun, Xiang-Tao ; Gong, Ke
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
fDate :
29 Aug.-1 Sept. 2004
Abstract :
This paper tries to develop a scheme of multilevel transmission for broadcasting data in wireless digital communication systems, which allows users to have a different data transmission rate according to the channel quality. Multilevel coded modulation (MLC) and multistage decoding (MSD) are the pivotal technology of this scheme. Some set partitioning strategies and MSD structures for 64 QAM constellations are discussed. The analysis and simulation results show that the block partitioning (BP) strategy and asymmetric constellations can provide unequal error protection for different priority bits. The simplified MSD structure greatly decreases the complexity and delay in decoding process.
Keywords :
broadcasting; computational complexity; data communication; decoding; digital communication; modulation coding; quadrature amplitude modulation; radio networks; telecommunication channels; block partitioning strategy; broadcasting data; computational complexity; error protection; multilevel coded modulation; multilevel transmission technology; multistage decoding; quadrature amplitude modulation; set partitioning strategy; wireless digital communication system; Analytical models; Broadcast technology; Broadcasting; Data communication; Decoding; Digital communication; Error correction codes; Modulation coding; Quadrature amplitude modulation; Wireless communication;
Conference_Titel :
Communications, 2004 and the 5th International Symposium on Multi-Dimensional Mobile Communications Proceedings. The 2004 Joint Conference of the 10th Asia-Pacific Conference on
Print_ISBN :
0-7803-8601-9
DOI :
10.1109/APCC.2004.1391651
