摘要
在ABPSK接收采用差分解调时,不可避免地存在频差,严重影响了解调器的性能。论述了估频、校频的原理,提供了利用TMS320C25实现估频(粗估)的流程图,并以600bps的T信道为例详细分析了估频、校频的性能。
When ABPSK receiver uses diffenence demodulation, frequency difference will unavoidably exist, thus seriously affecting the performance of demodulator. The paper expounds the principles of estimated frequency and phase rotating and presents the flow diagram of how to use TMS320c 25 to realize estimated frequency. In addition, with the 600bps T channel as an example the paper analyses the functions of estimated frequency and phase rotation in detail.
出处
《中国民航学院学报》
2006年第1期46-48,52,共4页
Journal of Civil Aviation University of China
基金
军队863项目(2004AA75052)
