Study of resource allocation algorithm for downlink channel in OFDMA relay system

To improve the sum-rate capacity with the constraint of minimum rate requirement of the users for the downlink channel of OFDMA relay system, a resource allocation scheme utilizing the Channel State Information (CSI) and Buffer State Information (BSI) was proposed based on the M-LWDF algorithm, which was applied to TDMA and CDMA cellular system. Because both the channel state and the bursty traffic of the users are considered in the resource allocation scheme, the larger sum-rate capacity was achieved while the outage was minimized when compared to the existing schemes. The numeric simulation results also justify the conclusion. © Copyright.