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STOBC(Space-time Orthogonal Block Code)是MIMO系统实现空时分集采用的方法之一,Tarok采用正交设计扩展了这种编码结构。这种编码方式接收端完全采用线性处理技术,己被3G用作开环发射分集策略之一。文中以MIMO系统为平台,对STOBC传统的译码算法进行了分析,通过对接收数据的分析比较,充分利用其统计特性和内在关系,提出了基于正交扩频码的一种同码联合检测算法。仿真结果表明在减少运算量的情况下,该算法具有优良的性能。
STOBC (Space-time Orthogonal Block Code) is one of the methods used to implement space-time diversity in MIMO systems. Tarok uses orthogonal design to extend this coding structure. This encoding method receiver completely linear processing technology, 3G has been used as open-loop transmit diversity strategy. Based on the MIMO system, the traditional STOBC decoding algorithm is analyzed. By analyzing and comparing the received data and making full use of its statistical characteristics and internal relations, a co-code joint detection based on orthogonal spreading code algorithm. The simulation results show that the algorithm has good performance in reducing the computational load.