| 1. | Multipath interference , another kind of radio interference , is also an issue
多路径干扰是另一种无线电干扰，它也是个问题。 |
| 2. | With the high - speed developing of radio technology , the tradition system ca n ' t deal with the problem of coherent signals and multipath interference
随着无线电技术的高速发展，对同频信号、多径干扰等问题，传统的测向系统显得无能为力。 |
| 3. | Depending on the characteristic of the mobile station system can reduce more influence such as multipath interference and none - line - of - sign ( nlos ) propagation than fixed station
同时利用该系统自身特点，避免了许多在固定站系统中多径干扰、非视距传播等定位难题。 |
| 4. | The spread spectrum ( ss ) communication system has stronger ability of resisting jamming , narrow band , and multipath interference than that of the conservation communication systems
扩频通信系统与常规的通信系统相比，具有很强的抗人为干扰，抗窄带干扰，抗多径干扰的能力。 |
| 5. | The advantages of spread spectrum communication are as follows : low probability of intercept , good anti - fading and anti - multipath interference capability . it is widely used in military and civil communication
扩频通信具有低截获率、抗衰落能力强、抗多径干扰等优点,广泛应用于军事通信和民用通信。 |
| 6. | The purpose of this thesis is not only to overcome multipath interference by spread spectrum but also to improve the performance of the system by employing rake receiver to recombine some multipath signals
扩频技术在水声信道中的应用远没有在空间中成熟，这方面的研究也比较少，因此，这是一个充满了挑战的研究领域。 |
| 7. | The multipath interference , resulted from interfering between the signals of the line of sight ( los ) and the line of ground reflection in vhf - rc , makes bit error rate of data transmission increased and system reliability attenuated
当前，中国水波中继信道以直视路径传播为主，同时存在地面折射路径对直射信号产生干涉，造成多径干扰。这种干扰使得信号传输的误码率上升，系统可靠性下降。 |
| 8. | Chapter 3 investigates the capacity improvement in cdma multi - cellular system with base - station smart antenna . we consider the effects of multipath interference , thermal noise , path loss , processing gain and voice activity factor . and introduces multiuser detection combined with smart antenna
考虑了多径干扰、热噪声、路径损耗、处理增益和语音激活因子的影响；并介绍了与智能天线技术相结合的多用户检测技术。 |
| 9. | The performance of the system has been investigated both in the laboratory ' s pool and on sea trials in real ocean environments at xiamen bay coast . the results have indicated that the new generation of underwater acoustic voice communication system has the capability to overcome the severe multipath interference and has longer working range
通过实验室水池的实验和厦门港浅海域的现场测试，证实了本研究实现的新一代水声数字语音通信机确实有更远的作用距离并且有抗强多途径干扰的能力，达到预期的研究目标。 |
| 10. | Last , based on the mc - cdma system model above mentioned , the matlab simulation is done . by the simulation of the ber performances from white gaussian noise , peak power clipping and combating multipath interference are analyzed , and some conclusions are obtained that mc - cdma is superior to ofdm
最后，在上述给出的mc - cdma模型中，通过matlab仿真分析了在mc - cdma与ofdm两种系统中由高斯白噪声、削波噪声以及多径干扰所造成的误码率分布曲线，得出mc - cdma系统在无线数据传输方面较ofdm系统更具有优良的特性，并给出了比较具体的性能分析。 |
