【摘要】 在基于OFDM技术的无线通信系统中,针对LS信道估计算法时域结果的构成,同时结合无线信道冲激响应在时域为有限冲激响应的特点,提出对LS信道估计算法的时域结果进行能量检测,并实行逆向搜索以获得信道有效阶数估计值的算法。理论分析和计算机仿真表明此算法能够得到很好的无线信道有效阶数估计结果。更多还原

【Abstract】 In wireless communication system based on OFDM,the character of LS algorithm’s result in time-domain was paid much attention to.At the same time,the character of Channel Impulse Response(CIR)in time-domain was taken into account.It was proposed to detect energy of CIR’s tap of LS algorithm’s result in time-domain and search the effective order of radio channel conversely.By theoretical analyses and computer simulation,it is indicated that this method shows good performance in estimating effective order of radio channel.更多还原