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在采用部分功率训练序列同步的OFDM系统中[1] ,训练序列会对OFDM承载用户数据的检测造成严重干扰.本文针对每个无线分组包中只有一个OFDM符号,即训练序列和用户数据同时在一个OFDM符号时间内发射,提出一种抑制训练序列干扰的方法,在接收机中分离训练序列、OFDM承载的用户数据.在室内多径衰落信道的条件下,本文分析和仿真了训练序列和OFDM承载用户数据的分离性能,结果表明,分析与仿真结果相近,分离效果明显.
In the OFDM system using partial power training sequence synchronization [1], the training sequence will seriously interfere the detection of OFDM bearing user data.In this paper, there is only one OFDM symbol in each wireless packet, that is, the training sequence and user data are One OFDM symbol is transmitted in time, a method of suppressing training sequence interference is proposed, which separates training sequences and OFDM-borne user data in the receiver.In the condition of indoor multipath fading channel, this paper analyzes and simulates the training sequence and OFDM Carrying the separation performance of user data, the results show that the analysis and simulation results are similar, the separation effect is obvious.