CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Frequency reuse analysis using multigraph theory

H. Zhang ; X. Xu ; Jingya Li (Institutionen för signaler och system, Kommunikationssystem) ; H. Liu
Lecture Notes in Electrical Engineering: International Conference on Green Communications and Networks, GCN 2011; Chongqing; China; 15 July 2011 through 17 July 2011 Vol. 113 (2012), p. 427-434.
[Konferensbidrag, refereegranskat]

Considering the inter-cell interference coordination in LTE system, many frequency reuse schemes are concluded in this proposal. On this basis, the theoretical basis of frequency reuse is described respectively from graph theory and algebraic analysis principle. In graph theory, the coloring theory in multi-graph and the level interference-limited theory are focused, resulting in an frequency reuse analysis from the optimization problem. In algebraic analysis principle, this proposal gives a quantitative analytic algebra to describe the relationship of frequency reuse factor (FRF) between cell center and cell edge. Then the frequency reuse optimization problem is transformed into two-dimensional coordinate system, which enables to consider taking analytic algebra method to solve it. Moreover, the simulation is taken into compare the system performance with different FRF schemes. The results show that it needs to take into account the size of FRF, both cell-edge and cell-center performance to choose the appropriate inner radius.

Nyckelord: Algebraic analysis , Frequency reuse , Multigraph theory , OFDMA



Denna post skapades 2015-05-04.
CPL Pubid: 216259

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för signaler och system, Kommunikationssystem

Ämnesområden

Kommunikationssystem

Chalmers infrastruktur