适用于串行级联结构的广义递归网格空时码设计

Design of Generalized Recursive Space-Time Trellis Codes for Serial Concatenation

该文结合网格空时码(STTC)和分层空时码(BLAST)的优点,利用多个高码率卷积码,设计了一类适用于串行级联结构的广义递归STTC(G-RSTTC)。相比于传统以递归STTC为内码的串行级联空时码(SCSTC),其数据速率可随发送天线数增加而线性增加;相比于以BLAST为内码的SCSTC,基于G-RSTTC的SCSTC可获得更大的分集增益和编码增益。

Combing space-time trellis codes and layered space-time codes, a new Generalized Recursive Space-Time Trellis Code（G-RSTTC） is designed for a Serial Concatenated Space-Time Code（SCSTC）. Compared with SCSTC using the traditional recursive STTC as the inner code, the G-RSTTC based SCSTC can increase the data rate with the increase of the transmit antenna number. Compared with the SCSTC using BLAST as the inner code, the G-RSTTC based SCSTC achieve higher diversity gains and coding gains.