一种新的超准正交空时网格码及性能分析

A new super-quasi-orthogonal space-time trellis codes and performance analysis

提出了一种新的超准正交空时网格码(SQOSTTC),这种新的超准正交空时网格码是在一种基于旋转因子的准正交空时分组码的基础上提出的,它可以取得全速率和完全分集,并且不增加编码和解码的复杂度.本文通过分析编码增益距离(CGD)和成对差错概率,对新的超准正交空时网格码的性能进行了分析.理论分析和仿真实验结果表明,在相同的频谱利用率下,本文提出的超准正交空时网格码比Jafarkhani等人提出的超准正交空时网格码的性能有明显的提高.

In this paper, a new super-quasi-orthogonal space-time trellis code （SQOSTTC） is presented. The new SQOSTTC is based on a set of quasi-orthogonal space time block codes （QOSTBC） proposed by introducing rotation coefficient. This code can provide full-diversity, full-rate as well as lower decoding complexity. The theory analysis and simulation results show that a few improvements over the code presented by Jafarkhani is attained.