A Serial Unequal Error Protection Code System Using Multilevel Trellis Coded Modulation with Ring-type Signal Constellations for AWGN Channels

作者：Yamazaki Satoshi^*; Asano David K

来源：IEEJ Transactions on Electrical and Electronic Engineering, 2010, 5(6): 708-716.

DOI：10.1002/tee.20596

• unequal error protection (UEP)
• two-ring signal constellations (2RING)
• Trellis coded modulation (TCM)
• additive white Gaussian noise (AWGN)

We propose a serial unequal error protection (UEP) code system for use with information sources that contain a mixture of both important and less important data To achieve UEP. the proposed scheme uses a form of Trellis coded modulation (TCM) which encodes the data by switching between some codes that use different signal constellations So we propose ring-type signal constellations with M levels of importance (MRING) Also, as no extra information about which code is used is added, the receiver estimates which code was used in the transmitter by examining the received signal points In this paper. theoretical analyses of the 2RING signal constellations (that is. for M = 2) and TCM codes are presented, and the effectiveness and the validity of the system for add

• 出版日期2010-11