CAJ | 학술논문

多天线处理技术是下一代无线通信系统中的一种重要技术,通过在发送端和接收端配置多根天线可以有效的改善系统容量.目前存在多种下行多用户多天线传输方案,如ZF-DPC,BD和ZFBF.从复杂度和系统性能角度考虑,对多用户MIMO传输方案进行了分析和比较.分析了不同发射方案的和速率和功率分配.通过仿真,验证和比较了不同方案的和速率性能、多用户分集特性及可支持的最优用户数特性.
다천선처리기술시하일대무선통신계통중적일충중요기술,통과재발송단화접수단배치다근천선가이유효적개선계통용량.목전존재다충하행다용호다천선전수방안,여ZF-DPC,BD화ZFBF.종복잡도화계통성능각도고필,대다용호MIMO전수방안진행료분석화비교.분석료불동발사방안적화속솔화공솔분배.통과방진,험증화비교료불동방안적화속솔성능、다용호분집특성급가지지적최우용호수특성.
Multiple input multiple output (MIMO) processing techniques are important for the next generation wireless communication systems due to their potential ability to improve dramatically the system capacity. There have been existed several multi-user MIMO (MU-MIMO) transmit schemes such as zero-forcing dirty paper coding (ZF-DPC), block diagonalization (BD), and zero-forcing beam-forming (ZFBF). These schemes are analyzed and compared by taking into account the system performance and complexity. The power allocation and sum data rate are investigated. The sum data rate, multi-user diversity, and the optimal user number that can be supported are evaluated by computer simulations.