Subcarrier and Power Joint Allocation on the Uplink of Multiuser OFDM Systems

LANGUAGE
English
SOURCE
Proc. The 19th International Teletraffic Congress (ITC19), Beijing China
Published Date:2005-08-29
ABSTRACT
In this paper, we study the subcarriers and power joint allocation on the uplink of multiuser OFDM systems. We propose two subcarrier allocation schemes to improve the uplink capacity: Exhausted Best Channel Allocation(EBCA) and Rounded Best User Allocation(RBUA). The basic idea of EBCA is that subcarriers choose the user, while in RBUA users choose subcarriers. In order to improve the uplink capacity, the distributive power constrains must be considered in the allocation schemes. Simulation results show that the proposed algorithms can enhance the uplink capacity efficiently.
KEYWORDS
OFDM, resource allocation