摘要
阐述了 OFDM的基本原理 ;提出一个具体的 OFDM系统仿真模型 ,在仿真意义上实现了在铁路无线列调 2 5 k Hz带宽范围内同时传送 4 8kbit/ s的语音和数据信号 ,并分析了采用不同的数字调制方式及编码效率的情况下 。
The basic principle of OFDM is expounded and put forward a simulation model based on OFDM, in which transmitting simultaneously vioce and data information at the speed of 48 kbit/s in 25 kHz bandpass is carried out. Then, analyse the BER on the several typical digital modulation and different code rate.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2002年第3期45-48,共4页
Journal of the China Railway Society
