CAJ | 학술논문

针对基于正交矩阵的空时频分组编码无法得到满分集增益的问题，提出了一种新的空时频分组编码方法，该方法利用正交变换扩展码（OTSC）对数据符号进行空域和频域的扩展，不仅能够实现满分集增益，且该扩展码适用于任意发射天线数下的MIMO-OFDM系统。仿真结果表明，利用该设计方案的系统误比特性能得到了提高，并且系统在任意收发天线数的低信噪比情况下也能获得良好的误比特性能。
침대기우정교구진적공시빈분조편마무법득도만분집증익적문제，제출료일충신적공시빈분조편마방법，해방법이용정교변환확전마（OTSC）대수거부호진행공역화빈역적확전，불부능구실현만분집증익，차해확전마괄용우임의발사천선수하적MIMO-OFDM계통。방진결과표명，이용해설계방안적계통오비특성능득도료제고，병차계통재임의수발천선수적저신조비정황하야능획득량호적오비특성능。
For the space-time-frequency block coding based orthogonal matrix can not get the full diversity gain, this paper proposes a novel space-time-frequency block coding scheme. The scheme utilizes Orthogonal Transform Spreading Coding(OTSC)to achieve the full diversity gain by expansion of data symbols spatial and frequency domain. And it applies to MIMO-OFDM system with any number of transmit antennas. The simulation results show that the BER performance of the system using this scheme is improved, also in low SNR for the system with any number of transmit antennas.