Fairness study in a multicellular system with distributed power control and scheduling | |
| Author | Bajracharya, Reny |
| Call Number | AIT Thesis no.TC-08-04 |
| Subject(s) | Data transmission systems Code division multiple access |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Telecommunications, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. TC-08-04 |
| Abstract | The high data transmission demand of 3G mobile networks has lead to different advanced technologies. But the resource limitation in wireless communication constraints the performance of the system. Therefore different access schemes have been developed for optimal resource utilization. Full spectral reuse system like CDMA has been considered as the strongest air interface for 3G networks. However this scheme suffers from high interference which limits the performance of the system. Therefore different power allocation and scheduling schemes based on signal to interference (SIR) ratio are used to minimize the interference and power of the system. In order to give access to the users lying below the threshold different fair scheduling algorithm are also proposed. However these schemes give capacity -fairness threshold i.e. one is achieved in expense of other. Moreover, centralized control of scheduler leads to heavy overheads to the system. In this thesis, a distributed power allocation and scheduling scheme for a full spectral reuse multi cellular system is considered where the cells are turned on with full power if the users SIR value satisfies the given threshold. This scheme is modified using a fixed step power control scheme only to the active cells and fair scheduling to the inactive cells. The performance of the modified algorithm is evaluated through MATLAB simulation in terms of ratio of active cells and system capacity per cell. Results show the increases in number of active cell when compared to the full power allocation algorithm. Moreover the system capacity per cell is also maintained with the modified scheduling algorithm. Along with the increasing active cell number proposed algorithm contributes in power saving as well as fairness to the inactive cells. |
| Year | 2008 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. TC-08-04 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Ahmed, Kazi M. |
| Examination Committee(s) | Erke, Tapio J.;Rajatheva, R.M.A.P.; |
| Scholarship Donor(s) | AIT Fellowship;Government of France |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2008 |