| 1. | In rayleigh channel , the capacity is also improved
在瑞利衰落信道上，性能亦有改善。 |
| 2. | Transmission efficiency of data packet in rayleigh channel
瑞利信道下的数据分组传输效率 |
| 3. | The analysis of performance and the simulation based on rayleigh channel
信道模型下的性能分析与仿真 |
| 4. | A support vector machine based detection method on rayleigh channel
信道下的支持向量机多用户检测方法 |
| 5. | For example , the average number of retransmissions can be decreased 50 % at 1 db snr in the gaussian channel and 9 db snr in the rayleigh channel
如在高斯噪声环境下，信噪比为1db时减少超过50 % ；在瑞利噪声环境下，信噪比为9db时也减少了50 % 。 |
| 6. | As an optional code of 3g , the research of turbo code is significant . its performance over rayleigh channel is just to solve the practical problem
而turbo码付诸于实际的应用还存在问题，衰落信道译码的研究正是在turbo码的实际应用上所提出的问题。 |
| 7. | The main program is designed by matlab language , others by c language . the simulation experiments are made in the gaussian and rayleigh channel
使用matlab语言编制主程序， c语言编写了部分子程序，采用高斯信道和瑞利信道对卫星通信系统进行了仿真实验。 |
| 8. | We compare the performance of bicm to tcm , the performance of bicm to bicm _ id and the performance of bicm using block interleave to that using random interleave over rayleigh channel in simulation scheme . and compare the performance of bicm to tcm and bicm _ id over awgn channel in addition
方案比较了rayleigh信道下bicm与bicm _ id的性能, bicm与tcm的性能,以及采用块交织的bicm与采用随机交织的bicm的性能,在awgn信道下bicm与tcm和bicm _ id的性能。 |
| 9. | Causes small transmission delay , but computation is complex . the other is called dsova , which does not need to know csi , with low - computation complexity and small transmission delay , and is more suitable in the case when side information is unknown . these two algorithms effectively combine the ofdm technology and the sova algorithm in rayleigh channel , resulting in an efficient sova decoding under frequency - selective channel
另一种是不含信道估计的差分sova算法(简称dsova ) ，该算法不必知道csi ，计算复杂度低，传输时延小，适用于边沿信息( sideinformation ， si )未知的情况，这两种算法将ofdm技术和rayleigh信道下的sova译码算法有机的结合起来，很好地实现了频率选择信道下的sova译码。 |
| 10. | Chapter three provides synchronization algorithms in dvb - t cofdm receiver , including symbol timing recovery , carrier frequency error estimation and sampling timing recovery . chapter four introduces some channel estimation algorithms based on interpolation in dvb - t receiver . five estimators are compared , in terms of mean - squared error both in rayleigh channel and ricean channel
第三章首先讨论了由于载波频率偏差、符号定时偏差和采样定时偏差对ofdm系统所造成的影响和干扰，然后针对dvb - t系统的cofdm接收机方案，分别给出了符号定时同步、频率同步以及采样钟同步的实现算法，并对它们的性能进行了分析仿真。 |
