摘要
基于MIMO-OFDM系统,本文提出了一种空时频编码方案,其利用扩展码,使数据符号在空域、时域、频域得到扩展,通过设置合适的参数,能够在频率选择性衰落信道下获得满空间分集和满频率分集,同时该方案的编解码复杂度不高。仿真结果表明,该方法在低信噪比下,也具有良好的误码率性能。
This paper proposes a space-time-frequency coding soheme for MIMO-OFDM system. The proposea coding scheme utilizes a spreading code to make data symbols spread in space, time and frequency domain. By setting appropriate parameters, it can gain full spatial diversity and full frequency diversity over frequency selective fading channel, and its code and decode complexity of this scheme is low. The simulation results show that the proposed scheme has good performance in low SNR.
出处
《电路与系统学报》
CSCD
北大核心
2012年第3期139-144,共6页
Journal of Circuits and Systems
