一种分布式天线架构中下行功率控制的方法技术

本发明专利技术公布了无线数据传输技术领域中的一种分布式天线架构中下行功率控制的方法。它通过统计发送天线到接收天线的功率，估计每根接收天线的噪声功率，从而计算每根发送天线归一化以后的接收功率；从对应接收功率最大的发送天线开始扫描，根据不同的天线功率分布情况和当前发送端天线功率是否可调来确定下一次的调整策略，完成一次功率调整；直到决策得到的每个天线的功率调整量都为零。本方法采用统一简洁的步骤针对各种复杂的天线初始功率分布状态进行调整，达到了把尽可能多的天线的功率调成一致的目的，这种方法算法简洁，易于实现，且对各种天线的初始功率分布，都能实现很好的调整效果，算法鲁棒性高。

Method for downlink power control in distributed antenna architecture

The invention discloses a downlink power control method in a distributed antenna architecture in the field of wireless data transmission technology. Through the statistics of the transmit antenna to receive antenna power and noise power estimation of each receive antenna, to calculate the received power of each transmitting antenna after normalization; from the transmitting antenna receiving power corresponding to the largest began scanning, according to the different distribution of the antenna power and current transmit power is adjustable to determine the adjustment strategy once, a power adjustment; power adjustment quantity of each antenna until the decision of all zero. This method uses simple steps for unified adjust antenna complex initial power distribution, the power to adjust the antenna as much as possible into the same purpose, this algorithm is simple, easy to implement, and the initial power of various antenna distribution, can realize the adjustment effect is very good, the robustness of the algorithm high.

【技术实现步骤摘要】

【技术保护点】
１．一种分布式天线架构中下行功率控制的方法，其特征是该方法包括以下步骤：步骤１：设定发送天线有Ｍｔ根，接收天线有Ｍｒ根，统计发送天线在接收天线处的接收功率，并对接收功率归一化处理；步骤２：将步骤１中的接收功率按从大到小的顺序排序，组成功率数组；步骤３：扫描步骤２的功率数组，若扫描到的第ｉ根发送天线的功率Ｐｉ小于设定功率值Ｐｌｉｍｉｔ，则扫描结束，转入步骤４；否则按如下步骤进行：步骤３．１：若第１到第ｉ－１根发送天线的功率允许降低，第ｉ＋１到第Ｍｔ根发送天线的功率允许提高，结束扫描，转入步骤４；步骤３．２：若第１到第ｉ－２根发送天线的功率允许降低，第ｉ－１根发送天线的功率不允许降低，则令ｉ＝ｉ－...

【技术特征摘要】

【专利技术属性】
技术研发人员：周世东，孙引，孙键，钟晓峰，肖立民，
申请(专利权)人：清华大学，
类型：发明
国别省市：11