| 1. | In this step we use the s - cdma as the modulation
讨论了上行信道采用s - cdma调制方式的性能曲线。 |
| 2. | The utilization of uplink channels is quite limited , and the reason is not difficult to find
限制了对上行信道的利用。 |
| 3. | Secondly , apon needs to address the fast synchronization of burst cells on the uplink
Apon需要解决上行信道中突发信元快速同步的问题。 |
| 4. | 3 j mcnair , fang zhu . vertical handoffs in fourth - generation multinetwork environments . ieee wireless communications , jun . 2004 , 11 : 8 - 15
Gprs的最大带宽只有171 . 2kbits ，而终端用户实际所能得到的带宽比理论值还要低得多，尤其是上行信道。 |
| 5. | So the upstream channel has the character of narrower bandwidth and bigger noise . this character has a big influence on data transmission on the upstream channels
因此，上行信道具有频带窄，噪声大的特征，这一特征对上行信道的数据传输具有极大的影响。 |
| 6. | As media - shared network , apon needs some form of media access control ( mac ) protocol to arbitrate the upstream channel among terminations , and avoid collisions
作为介质共享的树形网络， apon需要介质访问控制协议( mac )协调各终端对上行信道的访问，避免冲突。 |
| 7. | Water gauge this adopt through concentrator and up channel , computer of main website gsm or cdma the public have no network , very swift and steady realization data communication
该水表通过集中器与计算机主站之间的上行信道采用gsm或cdma公众无线网，可快捷稳定的实现数据通讯。 |
| 8. | Based on analyzing the upstream channel ' s description in the docsis protocol , the author profoundly explored the upstream channel ' s bandwidth allocation algorithm in the hfc network
在对docsis协议中上行信道描述部分的分析基础上，对上行信道的带宽分配算法进行了深入的研究。 |
| 9. | Thirdly , cablemodem is subject to noise interference , especially the uplink channel is susceptible to the noise " funnel " effect and the cross talk caused by narrow bandwidth
第三， cablemodem容易受到噪声干扰，特别是上行信道易受噪声"漏斗"效应的影响以及由于频带窄而引起信号间的串扰。 |
| 10. | The downstream channel is a point - to - multipoint broadcasting channel with a wider bandwidth , while the upstream one is a multipoint - to - point share medium with a narrow bandwidth
Hfc网络下行信道采用一点对多点的广播方式，用户共享下行资源实现比较简单。上行信道是一个多点对一点的媒体共享信道。 |
