基于小扩频增益的CDMA波束形成

根据CDMA系统中小扩频增益和多用户情况下信号阵列响应估计精度较差的问题 ,提出了利用基站收到的码元序列与解扩后的接收序列 ,估计信号阵列响应及干扰和噪声相关矩阵的新方法。理论分析与仿真结果表明 ,该方法能够减少阵列响应估计对扩频增益和功率控制的敏感性 ,当用户较多时输出SINR比码滤波方法有明显的提高

Method of CDMA Beam Forming in Small Spreading Gain

To solve the problem of inferior estimating accuracy of the CDMA desired signal array response vector in case of small spreading gain and multiple users, a new estimation algorithm by use of the despread data and the symbols received by the base station of the desired signal array response vector and the correlation matrix of interference and noise is proposed. The theoretical analysis and simulation results show that the algorithm can reduce the sensitivity of the signal array response vector estimation to small spreading gain and imperfect power control, and is effective to enhance the SINR output better than the code filter when there are multiple users in the system.