关键词: 多播, 多天线, 预编码, 资源分配

Abstract:

Considering intergroup fairness specifically, the problem of resource allocation for multiantenna multicast systems is studied, we formulate an optimization problem to maximize the system throughput given a set of available resources (power and subcarriers). A threestep algorithm is proposed, in which the multicast precoding process, subcarrier assignment and power allocation are operated separately to reduce the computational complexity. Simulation results also show that the system throughput is significantly improved by using the proposed algorithms both in multicast system and in unicast system.

Key words: multicast, multiple antenna, precoding, resource allocation