摘要
提出了一种自适应前向子信道控制(AFSCC)技术在Ka频段TC-OFDM系统中的应用方案,分析了AFSCC技术的原理,使用了一种自适应路径增益更新的方法,并用多重信号分级算法和自适应估计器实现对传输信道延迟时间的估计,建立了系统模型,仿真结果表明,在10-3误码率时,采用AFSCC可以获得3.4dB信噪比增益。
A scheme adopting Adaptive Forward Sub-Channel Control （AFSCC） techniques in the TC-OFDM system of Ka band is proposed. The principle of the AFSCC is analyzed. An adaptive path gain update method is used. The transmission channel delay is estimated by using theM USIC （Multiple Signal Classification） method and the adaptive estimator. System model is established, and simulation results show that, at the BER of 10^-3, a SNR gain ef 3.4dB can be abtained by adopting AFSCC.
出处
《通信技术》
2008年第1期18-19,30,共3页
Communications Technology
