WCDMA 通信模型 函数格式

gm@ F P%y7\0RF transmitt(moudulate(scrambling code(spreading(channel code interleaving(code(signal))))))

0Q-O#r6qr{|X0radio channeldecode(channel code reinterleaving (respreading) rescrambling code (demoudulate（RF receive）)))))MSCBSC | 移动通信网1ioRGNo#v

信源编码：指语音编码AMR 8种 12.2k~4.75Kbps，根据基站远近自动调整语音速率MSCBSC | 移动通信网S'ya,J&?i

+b^'bM6E[0信道编码：增加符号间相关性：语音1/2，1/3，l=9，tail比特8  数据 turbo1/3 PCCC

tail比特6

kZR2k,P;u0扩频：OVSF正交可变扩频因子，由walsh矩阵生成

8b{[M U |m0在协议25.211中的AICH部分，AICH每个时隙5120chip，前4096个chip存放32个实值符号a（j），j=0...31，后1024个chip留作csich信道。
~E)_]+V;]0a,~ where AIs, taking the values +1, -1, and 0, is the acquisition indicator corresponding to signature s and the sequence/W+l p+F%j&R
JmV;a?XZ+A0bs,0,…, bs,31 is given by table 22. If the signature s is not a member of the set of available signatures for all the Access
-q)v$lw [n8b0 Service Class (ASC) for the corresponding PRACH (cf [5]), then AIs shall be set to 0.
;U2fBo!nk[0u AKz0 The use of acquisition indicators is described in [5]. If an Acquisition Indicator is set to +1, it represents a positive acknowledgement. If an Acquisition Indicator is set to -1, it represents a negative acknowledgement.MSCBSC | 移动通信网tP0]Sb+y*F
 The real-valued symbols, aj, are spread and modulated in the same fashion as bits when represented in { +1, -1 } form.i\g.k]}MSCBSC | 移动通信网-N `*a F-z3]l0H^'s$^

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Q`v#^0其中有这么一个公式：a(j)=ΣAI(s)*b(s)(j)  （此式子是计算a(j),求和符号上下限s从0到15）MSCBSC | 移动通信网\]!zBP[M o
b(s)(j)对应的表有了，AI是node b反馈回来的指示，+1，-1，0，而a(j)又要为+1或者-1，;k+Gc!U#s&e%BvMSCBSC | 移动通信网E2C^(z+cWO(S
我考虑的好久都没有弄明白到底aj咋算出来的。