CAJ | 학술논문

OFDM作为一种多载波调制技术具有很强的抗衰落能力，广泛用于无线通信领域。同时提出一种基于最小均方误差(MMSE)的无线OFDM系统信道估计方法。实验表明，在相同信噪比(SNR)下，采用最小均方误差MMSE算法的误码率比传统的最小平方LS算法的误码率小1个数量级，采用MMSE算法有效地提高了无线OFDM系统信道估计性能。
OFDM작위일충다재파조제기술구유흔강적항쇠락능력，엄범용우무선통신영역。동시제출일충기우최소균방오차(MMSE)적무선OFDM계통신도고계방법。실험표명，재상동신조비(SNR)하，채용최소균방오차MMSE산법적오마솔비전통적최소평방LS산법적오마솔소1개수량급，채용MMSE산법유효지제고료무선OFDM계통신도고계성능。
As a kind of multi-carrier OFDM modulation technology have a strong ability to resist fading,widely used in wireless communication field. In this paper,based on minimum mean square error ( MMSE) channel estimation algorithm of wireless OFDM system. Experimental results show that under the same signal-to-noise ratio ( SNR) ,using the MMSE algorithm one order of magnitude smaller than LS algorithm ber. Proved the ef-fectiveness of the MMSE channel estimation algorithm of wireless OFDM systemand.