【摘要】 基于OFDM认知无线系统，从绿色节能的角度出发，以次用户总发射功率最小化为目标，将加权因子与用户的功率限制关联，通过调整加权因子解决功率分配的公平性问题。仿真验证了方案的实际可行性与有效性。更多还原

【Abstract】 Based on an OFDM cognitive wireless system,minimizing total transmitting power for secondary users is studied from the perspective of energy saving.The weighting factor is associated with the user’s power limit,and the fair power distribution can be obtained by adjusting the weighting factor.Simulation verifies the feasibility and effectiveness of the allocation.更多还原