TD-SCDMA 常见问题集锦 FAQ V1.01
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图 1 Turbo 编码的 TrCHs 的打孔...............................................................................................14
图 2 未编码、卷积编码以及 Turbo 编码 TrCHs 中采用重复的速率匹配.....................14
图 3 数据符号的扩频和加扰....................................................................................................18
图 4 DwPTS 自相关图示..............................................................................................................19
图 5 DwPTS 互相关图示..............................................................................................................20
图 6 扰码自相关图示..................................................................................................................20
图 7 扰码循环互相关图示.........................................................................................................21
图 8 智能天线结构示意图.........................................................................................................32
图 9 波束赋形示意图..................................................................................................................33
图 10 8 天线圆阵(r=0.6λ)专用信道和公共信道赋形...........................................................36
图 11 6 天线圆阵(r=0.27λ)专用信道和公共信道赋形.........................................................37
图 12 4 天线圆阵(r=0.2λ)专用信道和公共信道赋形...........................................................37
图 13 8 阵元阵列与单天线性能比较......................................................................................38
图 14 时间不对齐对联合检测性能的影响...........................................................................41
图 15 联合检测与 RAKE 接收之间的仿真性能比较(高斯白噪声)................................42
图 16 联合检测与 RAKE 接收之间的仿真性能比较(CASE 1)..........................................42
图 17 联合检测与 RAKE 接收之间的仿真性能比较(CASE 2)..........................................43
图 18 联合检测与 RAKE 接收之间的仿真性能比较(CASE 3)..........................................43
图 19 上下行链路信号的处理过程.........................................................................................44
图 20 同步目标一.........................................................................................................................45
图 21 同步目标二.........................................................................................................................46
图 22 同步目标三.........................................................................................................................46
图 23 接力切换示意图................................................................................................................47
图 24 网络规划流程.....................................................................................................................57
图 25 相邻小区使用不同下行同步码的规划......................................................................61
图 26 同一下行同步码复用距离的规划................................................................................62
图 27 A P-CCPCH RSCP becomes better than the previous best P-CCPCH RSCP.......................96
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