【摘要】 提出一种基于正交频分复用(OFDM)的联合最小平方(LS)信道估计与信号检测迭代算法.与一般的LS信道估计相比,该算法可大大提高估计的精度,而且通过时域低通滤波可有效地抑制加性白高斯噪声(AWGN)和载波间干扰(ICI)的影响,使OFDM系统在移动条件下很好地工作,并能给出很精确的信号检测结果.仿真结果表明,该算法具有很好的均方误差和误比特率性能.更多还原

【Abstract】 Compared with the common least-squares(LS) channel estimation, this algorithm can highly promote the estimation accuracy. And the lowpass filtering in time domain reduces the additive white Gaussian noise(AWGN) and intercarrier interference(ICI) significantly. It enables OFDM systems to work in mobile communications. And at the same time, accurate signal detection result can be given. The simulation results confirm good MSE and BER performance of the algorithm.更多还原