摘要
文中介绍了Turbo码和空时编码的原理,并对将两者结合起来的级联空时Turbo码进行了系统分析和仿真。 通过仿真对比发现,在谱效率为2比特/秒、误码率10-5时,1/2码率的空时Turbo码比码率为1/3、2/3时需要的信 噪比低约1dB。
The principles of Turbo codes and space-time codes are introduced, and the concatenated space-time code is systematically analyzed and simulated in this paper. It was revealed mat the SNR of space-time turbo code with code rate 1/2, in the conditions of 2 bit/s and error probability 10-5, is 1dB about lower han that of rate 1/3 or 2/3. It was also revealed that the advance of 1/2 space-time code decrease and the system complexity increase quickly as the spectrum efficiency increase.
出处
《北京电子科技学院学报》
2004年第2期42-46,共5页
Journal of Beijing Electronic Science And Technology Institute
