| 多媒体DS-CDMA系统的中断率分析 |
| |
| 引用本文： | 胡懋成,罗汉文,陈丽珍,宋文涛.多媒体DS-CDMA系统的中断率分析[J].上海交通大学学报,1999,33(5):557-559. |
| |
| 作者姓名： | 胡懋成 罗汉文 陈丽珍 宋文涛 |
| |
| 作者单位： | 上海交通大学,电子工程系,上海,200030 |
| |
| 摘 要： | 为提高多媒体ＤＳ－ＣＤＭＡ系统的中断率性能，提出了一种改进的功率控制方案．该方案根据多媒体ＤＳ－ＣＤＭＡ系统中不同业务具有不同数据速率、误码率门限和处理增益的特点，对不同的业务使用不同的基站接收功率．根据方案所确定的基站接收功率，进而控制用户终端的发射功率．此功率控制方法可使多媒体ＤＳ－ＣＤＭＡ系统在不增加系统总发射功率的同时，大大提高系统的中断率性能．分析表明，在固定中断率门限的条件下，中断率性能的提高直接意味着ＤＳ－ＣＤＭＡ系统容量的提高．
|
| 关 键 词： | 码分多址 功率控制 中断率 处理增益 |
| 修稿时间： | 1998-05-04 |
Analysis of Outage Probability for Wireless Multimedia DS-CDMA System |
| |
| HU Mao-cheng,LUO Han-wen,CHEN Li-zhen,SONG Wen-tao.Analysis of Outage Probability for Wireless Multimedia DS-CDMA System[J].Journal of Shanghai Jiaotong University,1999,33(5):557-559. |
| |
| Authors: | HU Mao-cheng LUO Han-wen CHEN Li-zhen SONG Wen-tao |
| |
| Abstract: | A developed method of power control for a wireless multimedia code division multiple access (CDMA) system was proposed. As different types of traffic have different bit rates, required bit error rate (BER) and processing gain, it was reasonable to give different types of media different transmission power which can be obtained from the power control method. The proposed method can decrease outage probabi lity of the system while maintains the same transmission power. If the outage probability threshold is fixed, the decreasing of the outage probability can increase the system capability. |
| |
| Keywords: | code division multiple access(CDMA) power control outage probability processing gain |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
