时间选择性衰落 meaning in Chinese
time selective fading
Examples
- Time selective fading
时间选择性衰落 - A new approach to equalization of linear single - input single - output time - selective fading channel
时间选择性衰落信道迫零均衡新方法 - A time - varying disperse channel is a channel that contain both frequency selective fading and time selective fading
时变色散信道则是同时存在频率和时间选择性衰落的信道。 - The relative motion between the base station and the mobile results in random frequency modulation due to different doppler shifts on each of the multi - path components , also called time selective fading
由于基站与移动台之间的相对运动，每条路径都会有一个明显的多普勒频移，导致信道的随机频率调制，也称时间选择性衰落。 - Under rayleigh fading channel , we also simulated and compared ber in siso 、 simo and mimo systems . secondly , based on careful study the ber and the channel capacity under white noise channel under mpsk modulation when the channel is rayleigh fading , we duduced the expressions of stbc ’ s ber and channel capacity under rice and nakagami fading . and also analysed the performances through numerical simulation using matlab to testify the exactitude of the dudeced expressions . finally , there exists an error floor of stbc through studying on its performance on time - selectiv fading channel . we analysed the reason and proposed two new decode combination scheme to eliminated the error floor and the performance of stbc on time - selective fading channel is improved . and also compared the two scheme ’ s complication and snr gain
这些结果大部分是闭式结果,能比较准确地衡量空时块码的性能,并对不同衰落的性能做了相互比较,其结果对空时块码的实际应用具有一定的指导意义。实际的信道是时变的,分析了空时块码在时间选择性衰落信道中产生误差地板效应的主要原因是存在码间干扰( isi ) ,在此基础上提出了两种能消除误差地板效应的译码合并方案,并对这两种方案的复杂度和信噪比增益进行了比较。