摘要
把一般多载波系统中的自适应功率最小化算法应用到多天线OFDM系统中,同时研究了MI-MO-OFDM系统传输过程中的误比特率变化情况.仿真结果表明,在相同的MIMO-OFDM仿真参数设置下,采用自适应功率分配最小化算法,当信噪比为102时,SISO-OFDM系统误码率比MIMO-OFDM系统误比特率高0.0463;随着配置的天线数增加,MIMO-OFDM系统的性能也得到增强.
An adaptive power minimization algorithm in a regular multi-carrier wave system is applied to multi-antenna OFDM system, and the changes of bit error rate in the process of transmission in MIMO- OFDM systems are studied. The simulations show that under the same MIMO-OFDM simulation parame- ters, the bit error rate (BER) of SISO-OFDM system is 0.0463 than that of MIMO-OFDM system with the same parameters in simulation at the SNR of 102. The performance of the MIMO-OFDM system gets better with the increasing of the antennas arrays.
出处
《重庆工学院学报(自然科学版)》
2009年第2期113-117,共5页
Journal of Chongqing Institute of Technology
基金
重庆市教委基金资助项目(KJ080614)