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给出了一种利用正交空时分组码(OSTBC)构造正交空时(OST)矩阵的新方法,并验证了不同的OST矩阵相乘结果仍为OST矩阵这一结论.在此基础上,提出一种新的多用户多输入多输出(MIMO)上行传输系统检测方案.首先利用用户等效OST信道特性对接收信号进行等效信道变换,然后通过连续用户干扰抵消实现各用户发送数据的分离.仿真结果表明,当误码率为1×10-3时,本文算法较CZF算法和MMSE-ML算法有2~3 dB的信噪比增益,同时具有更低的译码复杂度.
A new method of constructing orthogonal space-time-space (OST) matrices using orthogonal space-time block codes (OSTBC) is given, and the conclusion that the multiplication results of different OST matrices are still OST matrices is given , A new multi-user multi-input multi-output (MIMO) uplink transmission system detection scheme is proposed.Firstly, the equivalent channel transform of the received signal is performed by using the equivalent OST channel characteristics of the user, and then the data of each user is transmitted through continuous user interference cancellation The simulation results show that when the bit error rate is 1 × 10-3, the proposed algorithm has a SNR gain of 2 ~ 3 dB compared with CZF algorithm and MMSE-ML algorithm, and has lower decoding complexity.