基于直接判决反馈的BPSK/QPSK信号幅度估计  

Decision-Directed Feedback Amplitude Estimate for BPSK/QPSK Signal

作　　者：潘申富[1] 李振东[1] 梁庆林[1] 

机构地区：[1]北京大学电子学系卫星与无线通信实验室,北京100871

出　　处：《北京大学学报（自然科学版）》2004年第5期830-834,共5页Acta Scientiarum Naturalium Universitatis Pekinensis

摘　　要：推导了理想高斯信道下信号幅度估计的克拉美 罗界 (CRB) ,提出了一种基于直接判决反馈的BPSK QPSK信号幅度估计算法 ,并对该算法的性能进行了理论分析和仿真。仿真结果表明 ,在直接判决反馈模式下 。After the derivation of Cramer Rao Bound (CRB) for amplitude estimation in AWGN channel, a decision directed feedback amplitude estimation algorithm for BPSK/QPSK signal is proposed, followed by its performance analysis and simulation. The simulation results show that the variance of the algorithm is very close to the CRB at high signal to noise ratio in decision directed feedback mode.

关 键 词：克拉美-罗界 参数估计 直接判决反馈 

分 类 号：TN911.72[电子电信—通信与信息系统]