摘要
提出了一种新的基于MIMO信道的闭环系统,该系统是将旋转矩阵和注水原理相结合的一种闭环V-BLAST系统。旋转矩阵可以增加系统的发射分集度,从而有效提高系统性能;注水原理是当发射端已知信道信息时的一种最优的功率分配算法,它可以大大提高系统的频谱利用率。分析与仿真结果表明,该系统具有较高的频谱利用率和较好的误比特性能。
A new family of closed-loop system based on MIMO channel, is proposed, which is a closed-loop V-BLAST system with ideal power a11ocation algorithm based on MIMO channel- water-filling algorithm and rotation matrix. Rotation matrix can effectively improve the performance by increasing transmit diversity, while water-filling is the best algorithm for power a11ocation when the transmitter has the channel state information, thus improving spectral efficiency greatly. Analysis and simulations indicate that the proposed system yields good performances with high spectral efficiency and better bit-error-rate.
出处
《通信技术》
2008年第3期17-19,共3页
Communications Technology
