论文部分内容阅读
为了充分利用多天线系统发送端的延时信道参数,基于B ayes ian准则提出等误码准则和最小误比特率准则下的优化线性预编码方案。该方案考虑发送端的延时误差给系统带来的影响并对信道状态信息的条件期望进行奇异值分解。仿真结果表明:采用等误码准则下的优化方案使得系统在误比特率为10-4时获得约2.5 dB的信噪比增益,并且使各空间子信道的性能更接近,另外最小误比特率准则下的优化预编码方案也在稍增加系统复杂度的前提下有效地抑制延时信道对系统性能的影响并降低系统误比特率。
In order to make full use of the delay channel parameters at the transmitting end of a multi-antenna system, the optimal linear precoding scheme based on the Bainsan criterion and the minimum bit error rate criterion are proposed. The scheme considers the impact of the delay error of the sender on the system and decomposes the singular value of the conditional expectation of channel state information. The simulation results show that the optimization scheme under the equal error criterion makes the system gain about 2.5 dB signal-to-noise gain when the bit error rate is 10-4, and makes the performance of each spatial sub-channel closer. In addition, the minimum bit error rate Under the premise of slightly increasing the system complexity, the optimized precoding scheme under the guideline effectively restrain the impact of the delay channel on the system performance and reduce the system bit error rate.