細胞式行動電話的Macro Cell/個人通訊的Micro Cell Tiered microcell-macrocell Architecture
Cellular
Switch
Cellular
Switch
PSTN
micro cell
macro cell
Micro cell :
definition : radius <= 500m
TX power <= 100mw
targeted primarily : low mobility or fixed applications
technology: ADPCM 32kbps
low complexity(no FEC, no channel equalization)
using DCA(Dynamic Channel Assignment)
Cellular-based PCS
前一張投影片
下一張投影片
回到第一張投影片
檢視圖形版本