一种新的闭环正交空时分组码功率分配方案

为了提高准静态衰落信道下闭环正交空时分组码系统的误码性能及容量,分析了闭环正交空时分组码系统的等价信道瞬时符号信噪比,并通过使其无交叉项最大化,提出了一种新的功率分配方案.进一步从理论上证明了新的功率分配方案所获得的等价信道信噪比高于等功率分配方案及已有学者提出的不等功率分配方案.仿真结果也验证了该方案的误码性能及容量...

A new power allocation scheme of closed loop orthogonal space-time block codes

To raise the bit error performance and capacity of closed loop Orthogonal Space-Time Block Code (OSTBC) system at quasi-static fading scenario, we propose a new power allocation scheme by maximizing the nonintersecting item of equivalent channel instantaneous symbol signal-to-noise ratio. Furthermore, we theoretically prove that the new scheme can achieve better signal-to-noise ratio than both equal powered allocation scheme and unequal powered allocation scheme proposed by other scholars. Simulation results prove the correctness of the theoretical analysis.