摘要
为了进一步提高数字通信的可靠性,在两个三维8PSK星座图的基础上设计了一种增强型六维64PSK调制格式。相比传统的二维64PSK、64QAM调制格式,在功率归一化的条件下,增强型六维64PSK调制格式的最小欧氏距离(Minimum Euclidean Distance,MED)变得更大,而且能够分别获得21.6 dB和11.8 dB的解调增益。在最大化最小欧氏距离的过程中没有使用重复的算法,因此新方法的计算复杂度较低,这种增强型六维64PSK调制格式非常适合完成一个高可靠性的数字通信系统。
In order to improve the reliability of digital communications further, an enhanced six-dimensional 64PSK modulation for- mats which is based on two three-dimensional 8PSK constellations is designed in this paper. Compared with conventional two-di- mensional 64PSK and 64QAM modulation formats, under the power normalization condition, enhanced six-dimensional 64PSK modulation formats have larger minimum Euclidean distance （MED） , and can obtain about 21.6 dB and 11.8 dB demodulation gains respectively. No repetitive algorithm to maximize MED is used so that the new method has a little computational complexity, this enhanced 6D 64PSK modulation format is appropriate for implementing a highly reliable digital communication system.
出处
《电视技术》
北大核心
2016年第7期90-93,共4页
Video Engineering
基金
国家自然科学基金项目(61271274)
关键词
数字通信
多维调制
最小欧氏距离
digital communication
multidimensional modulation
minimum Euclidean distance
