摘要
正交频分复用(OFDM)信号包含许多独立调制的子载波,当子载波相干地叠加时会产生一个很大的峰均功率比。空时分组码OFDM系统是在OFDM系统中引入空时分组编码,通过选择映射的方法来降低空时分组码OFDM信号的峰值功率,从而降低峰均功率比(PAPR),并通过仿真对系统性能进行比较。
The OFDM signal consists of large number of independently modulated subcarriers,which can yield a large Peak to Average Power Ratio （PAPR）, when the subcarriers add up coherently. Space - time block coded OFDM system is introduced space- time block coding to OFDM system,In this paper,we use the Selected Mapping （SLM） to reduce the PAPR of Space- Time Block Coded（STBC） OFDM signals,and compapre the performance using simulation.
出处
《现代电子技术》
2007年第7期56-57,共2页
Modern Electronics Technique
