摘要
结合了分层空时码和空时分组码的各自优点,并针对BLAST抗衰落性能差以及STBC编码速率不高,可能达不到一定的频谱效益的特点,研究了一种分层结构的空时分组编码方法。在发射端对天线分组,每组进行独立的STBC编码,在接受端采用分组干扰抑制的方法对各组信号进行分离,然后进行STBC译码。该方案具有高于STBC的频谱利用率和编码速率,仿真结果表明,其抗衰落性能也优于BLAST。
To overcome the bad performance in combating fading of BLAST and low code rate of STBC, a layered structure STBC is introduced in this article by combining BLAST and STBC. The transmit antennas are divided into subgroups and each of them is encoded by individual STBC. For the receiver antennas, the group interference suppression measurement is taken and then STBC decoding. The code rate and spectrum efficiency are higher than that of corresponding STBC. Simulation results show that the ability of combating fading is better than that of corresponding BLAST.
出处
《山西电子技术》
2007年第1期51-53,共3页
Shanxi Electronic Technology
