摘要
提出了一种自适应调制垂直-贝尔实验室分层空时结构(V-BLAST)系统的低复杂度比特、功率分配算法,满足总平均功率和单根发射天线峰值功率受限条件下使比特率最大化。该算法可以达到与比特递增分配算法相同的最优分配结果,而计算量大幅度降低。仿真结果表明,在满足目标误码率条件下单天线功率限制会使比特率降低。
A bit loading and power allocation algorithm with low complexity in adaptive modulation for vertical-Bell laboratory layered space-time systems was proposed to implement the rate maximization, satisfying peak power constraint on each antenna as .well as the average total power limit. The proposed algorithm is of the same optimal allocation as the incremental algorithm while the computation complexity declines significantly. The simulation results show that the limitation of per-antenna peak power will decrease the bit rate under the target bit error rate.
出处
《微计算机信息》
北大核心
2007年第33期217-219,共3页
Control & Automation
基金
甘肃省信息科学与技术人才培养基金(甘高教2002-40号)
