但是这种正交性却被多径衰落信道破坏，产生了多码道干扰，严重影响了系统高速传输数据的性能。
The orthogonality, however, is impaired by multipath fading channels, thus causing multicode interference (MCI) and deteriorating the system's performance at high data transmission rates.
信道通带窄、多途干扰强、衰落严重是水声通信高速可靠传输信息的主要障碍。
Narrow channel band, severe multipath interferences and severe channel attenuation have demonstrated the great complexities and difficulties of high-speed UWA communications.
仿真结果表明，在AWGN加性高斯白噪声和相关瑞利衰落信道下，系统性能均有显著改进，并能有效克服GMSK信号所固有的严重符号间串扰ISI。
Simulation results show an evident improvement in AWGN and correlated Rayleigh fading channels. The severe intersymbol interference (ISI) of GMSK signals is also effectively suppressed.
由于对流层散射信道存在严重的衰落现象，故而传统的锁相环机制在散射通信中往往难以奏效。
Because of the fading characteristic in troposcatter channel, the mechanism of traditional phase locked loop is difficult to achieve the effect in troposcatter communication.
在短波通信系统中，由于多径效应常常引起信道衰落，直接结果是码间串扰非常严重。
In shortwave communication system, Intersymbol Interference is serious and signal is distorted extremely because of fading channel resulted in by the effect of multipath.
接收端采用串行干扰抵消的方法去除或抑制很严重的多用户干扰，该方法实现简单，适合瑞利衰落信道。
In the receiver, successive interference cancellation is employed to remove or suppress sever multiuser interference, and this detector is easy to implement and apt to Rayleigh fading channel.
在严重噪声的衰落信道(移动通信信道、水声信道等)中，采用联合编码技术比采用分离编码技术更能获得令人满意的效果。
In the fading channel with high noise, e. g. mobile communication channel and UWA channel, JSCC gets better performance than separated coding.
该算法具有镇定性，其收敛性能不会受到失真信道的影响，适用于均衡衰落性严重的信道。
The blind equalization algorithm is "equanimous" and the characteristic of convergence is not influenced by distortion of channel, it is fit for equalizing deep attenuation channel.
在无线通信系统中，由于多径效应常常引起信道衰落，直接结果是码间干扰非常严重。
In wireless communication system, Inter-symbol Interference is serious and signal is distorted extremely because of fading channel resulted in by the effect of multipath.
数字通信系统中多径衰落的无线信道环境通常会使接收信号受到严重的码间干扰。
The received signal is often corrupted badly by inter-symbol interference in the multipath fa- ding wireless channel circumstance.
数字通信系统中多径衰落的无线信道环境通常会使接收信号受到严重的码间干扰。
The received signal is often corrupted badly by inter-symbol interference in the multipath fa- ding wireless channel circumstance.
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