英文高手帮忙解释下这几个量吧,多谢
The total received power spectral density, including signal and interference, as measured at the UE antenna connector.
The power spectral density (integrated in a noise bandwidth equal to the chip rate and normalized to the chip rate) of a band limited white noise source (simulating interference from cells, which are not defined in a test procedure) as measured at the UE antenna connector.
The total transmit power spectral density (integrated in a bandwidth of (1+α) times the chip rate and normalized to the chip rate) of the downlink signal at the Node B antenna connector.
The received power spectral density (integrated in a bandwidth of (1+α) times the chip rate and normalized to the chip rate) of the downlink signal as measured at the UE antenna connector.
TS25.101
The total received power spectral density, including signal and interference, as measured at the UE antenna connector.
The power spectral density (integrated in a noise bandwidth equal to the chip rate and normalized to the chip rate) of a band limited white noise source (simulating interference from cells, which are not defined in a test procedure) as measured at the UE antenna connector.
The total transmit power spectral density (integrated in a bandwidth of (1+α) times the chip rate and normalized to the chip rate) of the downlink signal at the Node B antenna connector.
The received power spectral density (integrated in a bandwidth of (1+α) times the chip rate and normalized to the chip rate) of the downlink signal as measured at the UE antenna connector.
包括信号和干扰在内的总的接收功率频谱密度, 在终端的天线连接器处测量。
带限白噪声信号源(模拟来自其他蜂窝的干扰,并没有在测试步骤中具体定义)的功率谱密度(在等于芯片速率并按其归一化的噪声带宽内的积分), 在终端的天线连接器处测量。
总的下行信号功率谱密度(在等于(1+α)倍芯片速率并按其归一化的噪声带宽内的积分),在B型结点的天线连接器处测量。
接收的下行信号功率谱密度(在等于(1+α)倍芯片速率并按其归一化的噪声带宽内的积分),在终端的天线连接器处测量。
在等于(1+α)倍芯片速率并按其归一化的噪声带宽内的积分
如何理解?能具体解释下吗
非常感谢!
包括信号和干扰在内的总的接收功率频谱密度, 在终端的天线连接器处测量。
带限白噪声信号源(模拟来自其他蜂窝的干扰,并没有在测试步骤中具体定义)的功率谱密度(在等于芯片速率并按其归一化的噪声带宽内的积分), 在终端的天线连接器处测量。
总的下行信号功率谱密度(在等于(1+α)倍芯片速率并按其归一化的噪声带宽内的积分),在B型结点的天线连接器处测量。
接收的下行信号功率谱密度(在等于(1+α)倍芯片速率并按其归一化的噪声带宽内的积分),在终端的天线连接器处测量。
在等于(1+α)倍芯片速率并按其归一化的噪声带宽内的积分
如何理解?能具体解释下吗
非常感谢!
就以GSM为例,芯片速率其实就是波特率67.7KHz,那其占用的带宽大约为67.7*2即135.4KHz,乘上一个(1+α)之后200KHz,即一个信道宽度。
从频谱仪来讲,会有一个分辨率带宽的参数,测量的结果其实都是在一个窄带内积分的结果。
这个意思其实就是说,按照芯片速率对应的占用带宽(1+α)倍(一般是信道带宽)归一化,求其中一个平均的噪声功率谱密度(其实就等效于一个带宽内的积分)。
以上属个人理解,可能有不当之处,具体的要联系上下文。
小编在做wcdma基站阿?
node B相当于原先的BS就是基站。
知道码片(信号)最高速率对应信号的3dB带宽,不知道cybailey的波特率怎么理解,每波特有两位数据吗?
α是滤波器的滚降系数吗?
cylbailey能再解释一下吗,谢谢!
这里由于是二进制码流,波特率即比特率。
α不一定是滤波器的滚降系数,要结合上下文。
