【摘要】 提出一种QPSK调制的多输入多输出交织分多址(MIMO IDMA)系统的联合迭代信道估计和多用户检测结构.用户间通过不同的码片级交织序列来区分.每个用户每次迭代每信息比特的归一化复杂度与用户数K无关.瑞利信道通过提出的半盲迭代估计得到.仿真结果表明提出的多用户检测方案有较低的误码率和复杂度.更多还原

【Abstract】 A joint iterative channel estimation and multiuser detection receiver structure is proposed for multiple-input multiple-output interleave division multiple access (MIMO-IDMA) systems with QPSK modulation. Users are distinguished by different chip-level interleaving signatures. The normalized calculation complexity per bit per user per iteration is independent of user number K. Rayleigh channel parameters are obtained by proposed semi-blind iterative estimation. Simulation results show that the proposed multiuser detection scheme reaches lower bit error rate and lower complexity.更多还原