Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

The Encoder Design of Punctured Turbo Trellis Coded Modulation applied to MPSK

  • Seon, Wang-Seok (Department of Radio Science and Communication Engineering, Hongik University) ;
  • Kim, Youn-Hyoung (Department of Radio Science and Communication Engineering, Hongik University) ;
  • Lee, Ho-Kyung (School of Electronic and Electric Engineering, Hong-Ik University)
  • Published : 2002.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper introduces an encoder design method of Turbo TCM (Trellis Coded Modulation) with symbol puncturing. TTCM consists of two simple trellis codes in parallel and modulator. To obtain an good encoder, we calculate the free distance by the assumption that the punctured symbol is transmitted from the subset that consist of signals with the same systematic bit at random. We develop a search program to find the component encoder which maximize the free distance. Especially, for 8-PSK with code rate 2/3, we search for the component codes. We find a new encoder which has better BER performance than that of Robertson′s encoder. We verify the results through the simulation."

Keywords