| 1. | Cdma 1x can transmit data with higher rate and with more spectrum capacity than gprs
Cdma1x相对于gprs具有网络传输速度快和频谱利用率高的优点。 |
| 2. | The advantages of the modulation method omsk ( the gaussian pre - filtered minimum shift keying ) include bandwidth efficiency and constant envelope
Gsm系统中采用了gmsk调制方式， gmsk调制恒定包络，具有较高的频谱利用率。 |
| 3. | The newly developing transmit diversity and space - time codes are just one of the most important schemes to improve wireless spectrum efficiency
而近年来提出的发射分集和空时码就是能够有效提高无线频谱利用率最重要的方案之一。 |
| 4. | The target of the hsdpa concept is to increase the peak data rates , improve the quality of service , and enhance the spectral efficiency for downlink packet traffic
Hsdpa的目标是为了增加峰值传输速率,改善服务质量,提高下行分组业务的频谱利用率。 |
| 5. | Wireless link adaptation technology , because of its high spectral efficiency , is becoming one of the key technologies in wireless communication system
链路自适应技术正是由于在提高频谱利用率方面具有很强的优势,从而成为无线通信中的关键技术之一[ 1 ] [ 2 ] 。 |
| 6. | Furthermore , it become more and more important in commercial wireless communication because it can reduce the effects imposed by multi - path fading and co - channel interference
另外，跳频通信也应用到民用通信中以抗衰落、抗多径、抗网间干扰和提高频谱利用率。 |
| 7. | The increasing demand for capacity and quality motivates the need for new techniques to improve spectrum utilization . the use of adaptive antennas is one area that shows promise for increasing spectrum efficiency
随着移动通信的飞速发展，自适应天线作为一种有效提高频谱利用率的技术正受到广泛的研究。 |
| 8. | Ofdm , with the advantage of high spectrum efficiency and easy realization , can strongly combat multi - path and dispersive channel interference , so its application is remarkable in recent years
正交频分复用( ofdm )技术具有抗多径时延、抗信道衰落、频谱利用率高、硬件实现简单等优点，近年来受到广泛关注。 |
| 9. | The third generation of mobile communications ( 3g ) is a great revolution in the history of mobile communications , which can provide multimedia service to the mobile users with very high frequency efficiency
第三代移动通信( 3g )是移动通信发展史上的一次重大革命，它将以很高的频谱利用率向移动用户提供宽带多媒体业务。 |
| 10. | Adaptive coding technology is often used to improve frequency efficiency of wireless communication system as we know that the adaptive coding scheme based on turbo codes has been carried out in 3g systems
自适应编码技术可以有效的提高无线通信频谱利用率,在第三代移动通信系统中已经成功的运用了基于turbo码的自适应编码技术。 |
