【摘要】 本文介绍了一种自适应的V-BLAST OFDM系统,提出了一种动态调整迭代上下界的二分法比特功率分配算法。该算法根据平均信噪比动态调整迭代参数的上下界,确保了迭代区间包含最优解,并加快了算法的收敛速度。仿真结果表明,采用该算法的V-BLAST OFDM系统在满足误码率的前提下,以较低的复杂度,取得了较高的频谱效率。更多还原

【Abstract】 An adaptive V-BLAST OFDM system and a new adaptive algorithm are proposed.The algorithm which based on bisection iteration method adjusts the upper and lower limits of iterative step according to average signal to noise ratio.This method assures that the iterative field includes optimization solution,and convergence process is speeded up.Simulation results show the adaptive algorithm is efficient,and this system outperforms the traditional one in high frequency spectral performance.更多还原