| Author: | Wong, Sze-pong Wilson |
| Title: | Distributed power balancing in a CDMA network |
| Degree: | M.Sc. |
| Year: | 1998 |
| Subject: | Code division multiple access Mobile communication systems Cellular telephones Hong Kong Polytechnic University -- Dissertations |
| Department: | Multi-disciplinary Studies Department of Electronic Engineering |
| Pages: | iii, 131 leaves : ill. ; 31 cm |
| Language: | English |
| Abstract: | Frequency reuse increases the capacity of a cellular system but results in co-channel interference. Several power control schemes to optimize the transmitter power in a TDMA system has been investigated in [1], [2], [3]. However, the convergence speed to obtain the optimum value is too slow to be acceptable in a real cellular system. A new algorithm, that improves the convergence speed is developed. Furthermore, the developed algorithm removes the problem of high transmit power in the iteration formula found in [2]. The developed algorithm has been applied to both single and multi-cell CDMA system. A large number of simulation results are reported in this dissertation. It is shown that an error of less than 1 dB to the optimum C/I value is usually obtained. The performance of this algorithm in the presence of fading is evaluated. The dynamic system behaviour when a new user enters the system as well as when an existing user leaves the system is also studied. It is found that the convergence to an optimum C/I value is slower when a new user enter the system. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| b14418885.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 3.25 MB | Adobe PDF | View/Open |
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