【作者】 王杰令； 易克初； 杨宏；

【Author】 Wang Jieling~1,Yi Kechu~1,Yang Hong~2 (1.State Key Labs of Integrated Service Networks,Xidian University,710071,Xi’an 2.China Academy of Space Technology,100094,Beijing)

【机构】 西安电子科技大学综合业务网国家重点实验室； 中国空间技术研究院总体部；

【摘要】 在多用户STBC块传输系统中提出了一种基于联合均衡的高效频域多径分集接收算法。各用户的信息先经过联合均衡和干扰抵消技术从接收信号中分解,然后对每个用户分别进行频域的多径分集合并。采用低复杂度的单载波频域均衡技术获得对每个用户的初始检测结果,而频域的干扰抵消和多径合并过程也只需要与信道冲激响应长度线性的运算复杂度,因此该算法的总体计算复杂度不高。新算法可以同时获得空间与多径分集增益,因而检测性能比传统算法明显提高,在典型城市(TU)信道条件下的Monte Carlo仿真验证了该算法的性能。更多还原

【Abstract】 An efficient frequency domain multipath diversity reception is proposed in the multiuser STBC block transmission system based on joint equalization.When all the users are decoupled by joint frequency domain equalization and interference cancellation techniques from the received signal,frequency domain multipath diversity combining is applied to each single user separately.Single carrier frequency domain equalization(SC-FDE) with low complexity is investigated to achieve the hard decision on the transmitted signal for each single user,and only linear computational complexity is needed in the frequency domain interference cancellation and multipath combining procedure,so that the overall complexity is low.The new algorithm can exploit both spatial and multipath diversity,so the detecting performance is improved evidently.The advantages of the new scheme are evaluated by Monte Carlo simulations carried out in the typical urban(TU) channel.更多还原