1.2 噪声干扰符号
1. I :干扰总功率,包括热噪声,不包括有用信号功率。
2. Io :干扰功率谱密度,包括热噪声,主要在导频信道上与Ec配合组成Ec/Io使用。
3. No Eb/No can be interpreted as the.:热噪声功率谱密度,计算公式为:10lg(KT)+Nf。(cdma系统工程手册p652)Such ratio of the total energy(including pilot, DRC and ACK) received per antenna from that mobile during an information bit to thermal noise psd.(80-H0447-1, X4 P10)
4. Nt :噪声功率谱密度,包含热噪声和干扰。(Nt. The effective noise power spectral density at the sector RF input ports.)3GPP2 C.S0032。“Fig 2.3.1 demonstrates the Reverse Ec,p/No per antenna at.Ec,p/Nt per antenna (or.Traffic Channel PER versus total 0% loading in which situation Nt = No).” “Due to the assumed geometry, Ior/Nt saturates while Ior/No -> ∞.”in 80-H0447-1, X4
5. Ioc :其他小区和用户的干扰功率谱密度,不包括热噪声。
注意:噪声(而不是热噪声)一般指的是热噪声加干扰。