摘要
本文综合考虑复杂度、时延和实时性等因素,讨论了格状编码应用在多载波调制系统中的具体实现方案,并在ADSL DMT环境下对其性能进行了模拟分析。结果显示,格状编码用于多载波调制系统时仍然能够获得大部分理论编码增益。
Taking account of the complexity, delay and realistic, this paper has discussed the realization arragement of the trellis-coded modulaiton applied to the multi-carrier modulation system. The simulation analysis has been taken in the ADSL DMT environments. According to the simulation results, the trellis-coded modulaiton can also obtain nearly the theoretical gain when used in the multi-carrier modulation system.
基金
国家教委博士点基金
关键词
多载波调制
格状编码调制
数字通信系统
Multi-carrier modulation, Trellis-coded modulation, Viterbi decoding, System performance margin
