| 1. | Frequency selective fading
频率选择性衰落色散衰落 |
| 2. | 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。 |
| 3. | Single carrier frequency domain equalization for high data rate transmission systems over frequency selective fading channels
频率选择性信道下高速数据传输中的单载波频域均衡技术 |
| 4. | Subsequently the channel was modeled for three types namely additive white gaussian noise , flat fading and frequency selective fading . lastly , the receiver was studied
接下来信道建模成三种不同的类型，即加性高斯白噪声信道、平坦衰落信道和频率选择性衰落信道。 |
| 5. | Based on the research of mimo detections under the flat fading channel , this paper focuses on the mimo detection under the frequency selective fading channel , chiefly aiming at the lll detection algorithm
在对平坦衰落信道下mimo检测技术研究的基础上,本文展开了对频率选择性信道下mimo检测技术的研究。 |
| 6. | In wireless digital transmissions , due to the delay dispersion of the transmitted symbols and the limitation of channel bandwidth , the channel may induce inter - symbol interference ( isi ) , which results the frequency selective fading
在无线数字传输中，由于时延扩展和信道带宽限制，引起码间串扰，产生频率选择性衰落。 |
| 7. | In recent years , there has been a lot of interest in applying orthogonal frequency division multiplexing ( ofdm ) in wireless systems because of its various advantages in lessening the severe effects of frequency selective fading
近年来，正交频分复用( ofdm )作为一种具有高传输效率以及良好的抗频率衰落性能，得到了广泛的关注。 |
| 8. | Also , new expression of ser of mqam in frequency selective fading channel with rake combining is obtained , and throughput performance adaptive mqam with rake receiver in multipath rayleigh fading channel is analyzed
本文还得到了mqam在频率选择性衰落信道中采用rake合并新的误码率表达式，并对采用rake接收的自适应mqam在多径瑞利衰落信道中吞吐量性能进行分析。 |
| 9. | Comparison study between the constant modulus decision feedback equalizer ( dfe ) and several others is made on combating the frequency selective fading of uwac , and their tracking performance to time varying is also investigated
?针对水声信道的频率选择性衰落，对比研究了常数模判决反馈盲均衡算法与其它几种盲均衡算法的性能。针对水声信道的时变特性，研究了该算法的跟踪摘要性能。 |
| 10. | However , to achieve this objective , various technical challenges must be overcome . for example , the deployment of broad - band wireless access systems would require a transmission technique which can mitigate the detrimental effects of frequency selective fading
为达到这一目的，有一些技术问题必须得到良好的解决，比方说在宽带通信模式下由于延迟扩展造成的频率选择性扩展和由多普勒效应产生的信道时域衰落。 |
