Title :
Multilevel trellis coded 16QAM with partially overlapped signal sets
Author :
Hong, Sung-lwon ; You, Young-Hwan ; Kim, Jong-Heon ; Kang, Chang-Eon
Author_Institution :
Dept. of Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
Multilevel trellis coded 16QAM with partially overlapped signal sets is introduced. It is shown with this scheme that one can achieve an asymptotic coding gain of 4.26 dB over QPSK with a bandwidth efficiency of 2.5 bit/sec/Hz. This result is due to the fact that multilevel trellis coding technique is more appropriate for utilizing the increased Euclidean distance of partially overlapped signal sets than its counterpart, TCM scheme. We explain this coding scheme in terms of performance, complexity, and set partitioning of partially overlapped 16QAM signals, and compare it with trellis coded 8PSK, 16QAM
Keywords :
quadrature amplitude modulation; trellis coded modulation; Euclidean distance; QPSK; asymptotic coding gain; bandwidth efficiency; complexity; multilevel trellis coded 16QAM; multilevel trellis coding; partially overlapped signal sets; performance; set partitioning; trellis coded 8PSK; AWGN; Constellation diagram; Convolutional codes; Decoding; Euclidean distance; Gain; Interference; Modulation coding; Quadrature phase shift keying; Signal processing;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1996. PIMRC'96., Seventh IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
0-7803-3692-5
DOI :
10.1109/PIMRC.1996.568449
