Institute of Electrical and Electronics Engineers Inc.;New York: IEEE
Abstract:
摘要： Differential encoding (DE) is a classical technique at the transmitter that allows simple noncoherent detection at the receiver. On the other hand, trellis-coded modulation (TCM) is a bandwidth efficient technique which offers reliable data transmission. In this paper, we aim to find the best concatenation order of TCM and DE for channel phase coherence over N=2 symbols. Besides the well-known TCM followed by DE (called TCM-DE) , we propose a new trellis coding extension of DE which extends our earlier work, called differential trellis coded modulation (DTCM) . DTCM is TCM with DE defined in states where distinct states may have distinct DE functions. We propose design methods of DE functions for noncoherently non-catastrophic DTCM. For both TCM-DE and DTCM, we propose additive distance measures and set partitioning. Based on the proposed set partitioning, trellis codes are designed or searched for both TCM-DE and DTCM. Both minimum distances and simulation results show that TCM-DE outperforms DTCM and the obtained new codes are better than the original codes. 其他題名： TCOMM 出版者： New York: IEEE 出版日期： 2015-08 出處： IEEE transactions on communications, 2015-08, Vol.63 (8), p.2776-2787 資源來源： IEEE Electronic Library (IEL) 版權： Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2015 識別號： ISSN: 0090-6778 識別號： EISSN: 1558-0857 識別號： DOI: 10.1109/TCOMM.2015.2451082 識別號： CODEN: IECMBT
