Power Control for CDMA Macro-Micro Cellular System. Date: 27 Aug 2000 Advisor: Dr. Wang Speaker: Chih-Wen Chang. Content of this speech Introduction Motive Solution: Hierarchical Cell Structure (HCS) The proposed method System Description Macro/Micro-cells SIR power control (up link)
Date: 27 Aug 2000
Advisor: Dr. Wang
Speaker: Chih-Wen Chang
The increasing demand for cellular communications access and the evolution of wireless networks toward personal communications systems require a substantial increase of traffic capacity and full coverage of the service area.
Solution(micro-cellular systems with an overlay structure)
Micro-cells are capable of providing more capacity than macro-cell per unit area and are also attractive. Combining a macro-cell and micro-cell with a two-tier overlaying and underlaying structure for a CDMA system is to become an increasingly popular trend in the near future.
*Macro-cell provides full coverage.
The uplink SIR’s measured by both the macrocell and microcell base stations:
Q1: (Page4) Why “signal fading” can separate users operating on different
Q2: The simulation of non-uniform traffic distribution is Gaussian with mean
corresponding to the micro-cell center. What’s the meaning and how to
Q3: How to decide ?
Q4: In , the author said:” The micro-cell hot spot can be treated as the
aggregation of multiple micro-cells. Thus, some phenomena exhibited in
this structure can be applied to the hierarchical structure of multiple macro-
cells and micro-cells.”…?? What’s the meaning…??