摘要
本文提出了一种通过调整非编码信息量,并与信号映射相结合来改变编码、调制模式的自适应TurboTCM编码调制方案,称之为基于非编码信息匹配的自适应TurboTCM编码调制方案。由于将Turbo码和TCM编码调制技术相结合得到的TurboTCM编码调制方案的带宽效率高,所以,在慢时变无线衰落信道中,自适应TurboTCM编码调制的平均频谱效率也将很高。给出了该方案的工作原理、设计方法,并通过蒙特卡洛(MonteCarlo)仿真研究了该方案的性能。与现有编码调制方案相比,该方案具有频谱效率高、易于设计和实现的优点。
In this paper, an adaptive Turbo TCM coded modulation scheme is presented which change its operation mode through adjusting the amount of unencoded information and changing signal constellation. We call it the adaptive Turbo TCM coded modulation scheme based on unencoded information matching. Because the Turbo TCM technique got from combing Turbo code with TCM coded modulation is bandwidth efficient, adaptive Turbo TCM schemes are also bandwidth efficient in time-varying wireless channel. After the operation principle and design method are given, the performance of this scheme is studied through Monte-Carlo simulation. Compared with other adaptive coded modulation schemes, this scheme shows such merits as higher frequency utilizing efficiency and being easier to design and implement.
出处
《电路与系统学报》
CSCD
北大核心
2005年第6期40-44,49,共6页
Journal of Circuits and Systems
