Acta Metallurgica Sinica(English letters) ›› 2007, Vol. 14 ›› Issue (1): 90-95.doi: 1005-8885 (2007) 01-0090-06

• Wireless • Previous Articles     Next Articles

Subcarrier and power allocation algorithm based on inter-cell interference mitigation for OFDMA system

ZOU Ting, DENG Gang, WANG Ying, ZHANG Ping   

  1. Wireless Technology Innovation Institute, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2006-04-17 Revised:1900-01-01 Online:2007-03-30
  • Contact: ZOU Ting

Abstract:

This article proposes a dynamic subcarrier and power allocation algorithm for multicell orthogonal frequency division multiple access (OFDMA) downlink system, based on inter-cell interference (ICI) mitigation. Different from other ICI mitigation schemes, which pay little attention to power allocation in the system, the proposed algorithm assigns channels to each user, based on proportional-fair (PF) scheduling and ICI coordination, whereas allocating power is based on link gain distribution and the loading bit based on adaptive modulation and coding (AMC) in base transceiver station (BTS). Simulation results show that the algorithm yields better performance for data services under fast fading.

Key words:

ICI mitigation;OFDMA;cell edge user equipments (CEUs);cell centre user equipments (CCUs);dynamic resource allocation

CLC Number: